Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal de-
composi ion o u ea
Ch is ian Sch einemache s ID 1,2,3, Oli ie Bollen3, and G ego y Leinde s ID 2
1Fo schungszen um J¨
ulich GmbH, Ins i u e o Ene gy and Clima e Resea ch, IEK-6: Nuclea Was e Managemen and Reac o Sa e y, J¨
ulich, Ge many
2Belgian Nuclea Resea ch Cen e (SCK CEN), Ins i u e o Nuclea Ma e ials Science, Boe e ang 200, B-2400 Mol, Belgium
3KU Leu en, Depa men o Chemis y, Celes ijnenlaan 200F, P.O. Box 2404, B-3001 He e lee, Belgium
Da ase Ve sion: 1.0.0; June 28, 2021 DOI
DOI 10.5281/zenodo.3841374
10.5281/zenodo.3841374
License
This wo k is licensed unde a C ea i e Commons A ibu ion-NonComme cial 4.0 In e na ional Public License. cbn
Desc ip ion
The hyd olysis o UO 2+
2, NdIII, CeIII and CeIV ca ions, induced by he mal decomposi ion o u ea, was s udied.
Mo eo e , we in es iga ed bina y mix u es o u anyl and he lan hanides, as well as e na y mix u es o u anyl
and bo h lan hanides using CeIII o CeIV. The impac o he u ea con en and he empe a u e on he eac ion
kine ics and he o med p ecipi a e was e alua ed and he esul s a e in dep h discussed in ou a icle [1].
U anyl ions p ecipi a ed as ammonium diu ana e (ADU) wi h di e en s oichiome y unde he applied
condi ions. NdIII and CeIII ca ions showed a compa able pH e olu ion du ing hyd olysis and LnCO3OH p oduc s
we e iden ified, whe eas CeIV hyd olysed a a lowe pH and o med nanoc ys alline CeO2. Depending on he
u ea con en , a pa ial co-p ecipi a ion was obse ed o mix u es o UO 2+
2and NdIII. The p oduc s o CeIII
and CeIV hyd olysis we e also iden ified in he p ecipi a es o bina y u anyl and ce ium mix u es. Fo e na y
U/Nd/Ce mix u es, a simul aneous p ecipi a ion o NdIII and CeIII and a pa ial inco po a ion o he Ln phase
in o he ADU phase was obse ed, whe eas he p esence o CeIV/CeO2 esul ed in h ee indi idual phases.
The p ecipi a ion eac ion was ollowed-up by moni o ing he pH e olu ion and he me al concen a ion in he
supe na an , applying UV/Vis and ICP-MS. The o med p ecipi a es we e cha ac e ised by XRD and SEM.
The da a acc ued du ing he s udy a e pa o his da a se . Please no e ha he p o ision o his da ase
is based on a olun a y basis. You a e welcome o use he da a om his se in you wo k. I you do so and
publish esul ing findings, please ci e ou wo k as equi ed by he license.
Ci e as
Ch is ian Sch einemache s, Oli ie Bollen, & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ]. Zenodo. DOI: 10.5281/zenodo.3841374
BIBT
EX key o his da ase :
@Misc{Sch einemache s2021_da a,
au ho = {Sch einemache s, Ch is ian and Bollen, Oli ie and Leinde s, G ego y},
i le = {Da a o u anyl-, {Nd}-, {Ce}-hyd olysis and hei mix u es induced by
he mal decomposi ion o u ea},
publishe = {Zenodo},
yea = {2021},
no e = {(Ve sion 1.0.0) [Da a se ], License: CC BY-NC},
doi = {h ps://doi.o g/10.5281/zenodo.3841374},
}
1 / 30
Con en s
Abou his da ase 3
S uc u e o his da ase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Da a p ocessing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Hyd olysis expe imen s 4
Expe imen al condi ions and composi ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1 Reac ion ollow-up da a 7
1.1 Sampling and pH measu emen s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.2 Ul a iole – isible spec oscopy (UV/Vis) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.3 Induc i e coupled plasma mass spec ome y (ICP-MS) . . . . . . . . . . . . . . . . . . . . . 11
2 Cha ac e isa ion da a o d ied p ecipi a es 14
2.1 X- ay powde di ac ion (XRD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2 Scanning elec on mic oscopy (SEM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Re e ences 16
Appendix 17
Raw UV/Vis da a plo s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Reac ion ollow-up summa y plo s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Raw X- ay di ac ion pa e ns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
2 / 30
Abou his da ase
The da a a e supplemen o he ollowing a icle:
C. Sch einemache s e al. “Hyd olysis o u anyl-, Nd-, Ce-ions and hei mix u es by he mal decomposi ion o
u ea”. In: Eu opean Jou nal o Ino ganic Chemis y (2021). DOI:10.1002/ejic.202100453
@A icle{Sch einemache s2021,
au ho = {Sch einemache s, Ch is ian and Bollen, Oli ie and Leinde s,
G ego y and Ty pekl, V´acla and Modolo, Giuseppe and Ve we , Ma c
and Binnemans, Koen and Ca dinaels, Thomas},
i le = {Hyd olysis o u anyl-, {Nd}-, {Ce}-ions and hei mix u es
by he mal decomposi ion o u ea},
publishe = {Wiley-VCH Ve lag},
jou nal = {Eu opean Jou nal o Ino ganic Chemis y},
yea = {2021},
doi = {h ps://doi.o g/10.1002/ejic.202100453},
}
S uc u e o his da ase
The da ase was deposi ed as a comp essed zip a chi e. I he a chi e is unzipped, sub olde s con aining he
da a assigned o he s a e o he espec i e olde name a e ex ac ed. The olde s uc u e o he ex ac ed
da ase can be summa ised as p esen ed in figu e 1. I has a o al size o abou 80 MB and all files use he
unicode s anda d UTF-8 o cha ac e encoding.
da ase
01 p ecipi a ion eac ion ollow-up
02 cha ac e isa ion d ied-p ecipi a es
README.pd
license. x
Figu e 1: Ex ac ed oo olde o his da ase and i s con en .
A desc ip ion o he da a wi hin each sub olde o he da ase s’ oo olde (figu e 1) is gi en in he co e-
sponding sec ion o his documen . Besides he sub olde s, he e a e wo files in he oo olde , con aining
in o ma ion abou he da ase i sel :
1. README.pd ( his eadme file, pd documen )
2. license. x (license o his da ase , plain ex file)
Da a p ocessing
I no s a ed di e en ly, he we e da a p ocessed using he Py hon p og amming language (Ve sion 3.6.8) [2]
in combina ion wi h he lib a ies NumPy (Ve sion 1.16.4) [3] and pandas (Ve sion 0.24.2) [4]. The isualisa ion
o he da a was done wi h gnuplo (Ve sion 5.0.4) and he Py hon lib a y Ma plo lib (Ve sion 3.1.) [5].
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
3 / 30
Hyd olysis expe imen s
The da a o his da ase we e ob ained om samples collec ed du ing hyd olysis expe imen s, which we e
ca ied ou using he se -up shown in figu e 2. The eac ions ook place in a 100 mL h ee neck ound bo om
flask, which was loca ed in a empe ed oil ba h (see figu e 2, close-up). A coole was a ached o he middle
neck o he flask and he connec ed eci cula ing chille (Buchi F-105) was se o 9 °C. The solu ions’ empe a-
u e and he oom empe a u e we e measu ed using he mocouples ( empe a u e ange: −200 °C o 1370 °C),
connec ed o a he mome e (Ludwig Schneide Digi al-Measu ing Ins umen 65625), while he empe a u e
o he oil ba h was moni o ed using a s i ing pla e equipped wi h a he mocouple (VWR ad . VMS-C7).
Figu e 2: Pho og aph o he se -up used o he hyd olysis expe imen s (le ) and a close up o he flask filled
wi h 50 mL u anyl ni a e solu ion (c(UO2(NO3)2) = 0.05 mol L−1).
A olume o 50 mL aqueous solu ion wi h an aimed mola me al concen a ion o 0.05 mol L−1 was gi en
in o he flask and he se -up was hea ed o he desi ed empe a u e. Upon eaching a s able empe a u e, an
ini ial sample o 2 mL was aken using wice a 1 mL pipe e (Eppendo Resea ch Plus, adjus able: 100 µL o
1000 µL). The sampling ime and empe a u es o he solu ion and he oil-ba h, as well as he oom empe a-
u e, we e no ed. A e wa ds, solid u ea was added o he solu ion, which dissol ed apidly. The ime o u ea
addi ion was also no ed and used as e e ence ime o u he e alua ions ( el = 0). Du ing each p ecipi a ion
eac ion, which ook up o 10 h, i was sampled e e y 25 min o 50 min as desc ibed o he ini ial sample.
Each sample was s o ed in a es ube and a e eaching empe a u es be ween 25 °C o 29 °C i s pH was
measu ed. Besides he pH, he sample- and oom- empe a u e we e logged. A e wa ds, he sample was
gi en in o a 4 mL glass ial wi h known mass. Fu he analyses we e ca ied ou using ICP-MS and UV/Vis.
A he end o he day o each expe imen , he second bu las sample was aken. The se -up an du ing he
nigh and a he ollowing mo ning (abou 25 h since addi ion o u ea), ano he sample was aken o de e mine
he final pH o he supe na an . A e wa ds, he hea sou ce was emo ed and he se -up was allowed o cool
o oom empe a u e. Upon eaching i , he emaining suspension was emo ed om he flask using a 5 mL
pipe e (VWR e gonomic high-pe o mance, adjus able: 1 mL o 5 mL). The suspension was dis ibu ed e enly
be ween 2 cen i uge ials (Falcon, 15 mL) and cen i uged o 15 min a 6500 pm. A e cen i uga ion, he
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
4 / 30
supe na an was emo ed and ul a-pu e wa e was added o each ial. The ials we e shaken and cen i uged
o an ohe 15 min a 6500 pm. The washing p ocedu e was in o al ca ied ou h ee imes. A e wa ds, he
p ecipi a e was ans e ed in o a 4 mL glass ial and d ied a 40 °C and 250 mba un il eaching a s able mass.
P ecu so solu ions
P ecu so solu ions we e p epa ed by dissol ing u anyl ni a e, neodymium(III) ni a e, ce ium(III) ni a e, and
ammonium hexani a oce a e(IV) in ul a-pu e wa e (R≥18.0 MΩ). A olume o 25 mL was p epa ed o he
UO 2+
2solu ion, while olumes o 10 mL we e p epa ed o each o he lan hanide ca ion solu ions. The sal was
weighed in o a olume ic flask o he co esponding olume and filled up wi h ul a-pu e wa e . A e wa ds,
he mass was emeasu ed o calcula e he solu ions’ densi y. An o e iew o he p epa ed p ecu so solu ions
is lis ed in able 1. I also includes he compound used as s a ing ma e ial, i s o igin and pu i y, he mass o
he compound, as well as he calcula ed mola concen a ion o he me al and he solu ions’ densi y.
Table 1: Compound, o igin and pu i y o chemical used o p epa e p ecu so solu ions, as well as he masses
o he compounds, he mola concen a ions based on hose masses and he densi ies o he solu ions.
Mn+compound o igin and pu i y m(compund)ac(Mn+)ρ(solu ion)
/ g / mol L−1 / g mL−1
UO 2+
2UO2(NO3)2·xH2O p epa ed om UO2a SCK CENb17.914 56 1.427 1.478
NdIII Nd(NO3)3· 6 H2O S em Chemicals Inc. (≥99.9 w %) 2.4039 0.548 1.135
CeIII Ce(NO3)3· 6 H2O S em Chemicals Inc. (≥99.9 w %) 0.4603 0.106 1.020
CeIV (NH4)2[Ce(NO3)6] Ac os O ganics (99.5 w %, o analysis) 0.5758 0.105 1.041
am(UO2(NO3)2·xH2O) aken using a Me le Toledo AT201 balance, o he compounds weighed on a Sa o ius 1712MP8 balance
bUO2(NO3)2·xH2O p epa a ion desc ibed in ou a icle [1]
Fu he p epa a ions
The expe imen al solu ion o he h ee expe imen s ha con ained only one lan hanide was gene a ed by
weighing he co esponding compound (see able 1) in o a 50.00(4) mL olume ic flask and dissol ing i in
ul a-pu e wa e . All o he expe imen al solu ions we e p epa ed by pipe ing he app op ia e olume o he
p ecu so solu ion(s) in o a 100 mL glass beake wi h known mass. The indi idual p ecu so solu ion olumes
we e calcula ed based on he aimed mola me al concen a ion o 0.05 mol L−1, he desi ed mola me al ac-
ions (lis ed in able 2), and a o al olume o 50 mL o expe imen al solu ion, aking he concen a ions lis ed
in able 1 in o accoun . A e he addi ion o a p ecu so solu ion, he mass was e-measu ed. The equi ed
amoun o wa e was calcula ed by sub ac ing he sum o he p ecu so solu ion olumes om he desi ed
o al olume o 50 mL. We assumed a wa e densi y o 1.00 g mL−1 and added he mass co esponding o he
calcula ed olume o wa e o he beake . The beake was placed on a balance and he mass was con inuously
moni o ed, he final one was no ed down.
The u ea con en is exp essed as R(u ea), co esponding o he n(u ea)
n(Mn+) a io and we used a ios o 26 and
52. All expe imen s we e ca ied ou wi h aimed mola me al concen a ions o 0.05 mol L−1, leading o cons an
u ea masses o each o he u ea a ios. Fo expe imen s wi h R(u ea) = 26, he aimed mass was 3.7538 g,
while i was 7.5075 g o expe imen s wi h R(u ea) = 52. The u ea used in each expe imen (Sigma-Ald ich
(99.0 % o 100.5 %, ACS eagen ) was weighed in o a glass beake and added o he empe ed expe imen al
solu ion a e he ini ial sampling.
All da a collec ed du ing he p epa a ion o each o he expe imen s, like he pipe ed olumes, he co e-
sponding masses, and he u ea mass, as well as he addi ion ime a e included in his da ase and lis ed in
able 3 (p. 6). The loca ion o he co esponding file (hyd olysis expe imen s.cs ) is indica ed in figu e 3.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
5 / 30
Expe imen al condi ions and composi ions
The expe imen al condi ions we e adop ed om Wangle e al. [6], who in es iga ed he hyd olysis o ho ium by
he mal decomposi ion o u ea a 90 °C and 100 °C using R(u ea) a ios o 5, 25 and 50. In ou expe imen s,
we wan ed o use cons an o al mola me al amoun s, which equi ed cons an masses o u ea o each
R(u ea). We calcula ed u ea con en s o R(u ea) o 25 and 50, bu did no conside ha he u ea was gi en
in o a olume o 48 mL solu ion ins ead o 50 mL due o he ini ial sampling. Taking his in o accoun , ou
expe imen s we e pe o med wi h R(u ea) a ios o 26 and 52.
An o e iew o he pe o med expe imen s is gi en in able 2. The able con ains he expe imen IDs, he
aimed mola me al ac ions (χ(Mn+) = n(Mn+)
Pn(Mn+)) o he ca ions UO 2+
2, NdIII, CeIII and CeIV, he aimed u ea
con en s (R(u ea) = n(u ea)
n(Mn+)), as well as he empe a u es applied du ing he expe imen s.
Table 2: ID o hyd olysis expe imen , aimed UO 2+
2, NdIII, CeIII and CeIV mola me al ac ions, as well as he
aimed mola u ea o me al a io R(u ea) and he empe a u e T.
expe imen ID aimed mola me al ac ion χR(u ea) T
UO 2+
2NdIII CeIII CeIV / °C
OB-17-01 1.00 26 100
OB-17-02 1.00 26 90
OB-17-03 0.90 0.10 26 90
OB-17-04 1.00 52 90
OB-17-05 0.90 0.10 52 90
OB-17-06 0.75 0.25 52 90
OB-18-01 0.75 0.25 26 90
OB-18-02a1.00 26 90
OB-18-03b0.90 0.10 26 90
OB-18-04 1.00 26 90
OB-18-05 1.00 26 90
OB-18-06 1.00 26 90
OB-18-07 0.80 0.20 26 90
OB-18-08 0.80 0.20 26 90
OB-18-09 0.55 0.25 0.20 26 90
OB-18-10 0.55 0.25 0.20 26 90
a epe i ion o OB-17-02
b epe i ion o OB-17-03
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
6 / 30
1. Reac ion ollow-up da a
The da a ela ed o he expe imen p epa a ions, he hyd olysis condi ions, he sampling o he supe na an
and he analysis o he samples a e loca ed in he sub olde 01 p ecipi a ion eac ion ollow-up o his
da ase . I has he con en shown in figu e 3, which is desc ibed unde nea h.
da ase
01 p ecipi a ion eac ion ollow-up
01 eac ion ollow-up sampling+pH
OB-17-01 sample pho og aphs
OB-17-01-00.jpg
...
OB-17-01 sampling+pH.cs
...
02 eac ion ollow-up UV-VIS
01 aw UVVIS da a
OB-17-04 aw UVVIS
OB-17-04-00 aw UVVIS.cs
...
OB-17-04 aw UVVIS.pd
...
02 p ocessed UVVIS da a
OB-17-04 p ocessed UVVIS.cs
...
03 eac ion ollow-up ICP-MS
OB-17-01 ICP-MS.cs
...
hyd olysis expe imen s.cs
02 cha ac e isa ion d ied-p ecipi a es
Figu e 3: Con en o he sub olde o he da a belonging o he eac ion ollow-up o he hyd olysis expe imen s.
The cs file hyd olysis expe imen s.cs , which is loca ed di ec ly in he sub olde o he eac ion
ollow-up da a (01 p ecipi a ion eac ion ollow-up, see figu e 3), p o ides a summa y o he pe -
o med expe imen s and con ains among o he s he in o ma ion lis ed in able 2. The file is comma sepa a ed,
i s fi s column lis s a ious keys and he second column an uni whe e applicable. Each o he emaining
column con ains da a o one specific expe imen , which can be assigned o he key o he fi s column, ha ing
he uni men ioned in he second column. The fi s key, and consequen ly he fi s ow, con ains he expe imen
ID. All keys and he co esponding uni a e lis ed and desc ibed in able 3. The con en o he sub olde s in he
olde 01 p ecipi a ion eac ion ollow-up (see figu e 3) is desc ibed in he ollowing subsec ions.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
7 / 30
Table 3: Lis s o keys om column 1 and co esponding uni s om column 2 o he cs file
hyd olysis expe imen s.cs , as well as a b ie desc ip ion o he da a o each o he keys.
column 1 column 2 desc ip ion
expe imen ID ID o he expe imen , as lis ed in able 2 (p. 6)
χ(UO22+) aimed aimed UO 2+
2mola me al ac ion, as lis ed in able 2 (p. 6)
χ(Nd(III)) aimed aimed NdIII mola me al ac ion, as lis ed in able 2 (p. 6)
χ(Ce(III)) aimed aimed CeIII mola me al ac ion, as lis ed in able 2 (p. 6)
χ(Ce(IV)) aimed aimed CeIV mola me al ac ion, as lis ed in able 2 (p. 6)
V(U-p ecu so ) / mL pipe ed olume o UO 2+
2p ecu so solu ion lis ed in able 1, (p. 5)a
V(Nd-p ecu so ) / mL pipe ed olume o NdIII p ecu so solu ion lis ed in able 1 (p. 5)a
V(Ce(III)-p ecu so ) / mL pipe ed olume o CeIII p ecu so solu ion lis ed in able 1 (p. 5)a
V(Ce(IV)-p ecu so ) / mL pipe ed olume o CeIV p ecu so solu ion lis ed in able 1 (p. 5)a
m(U-p ecu so ) / g mass o V(U-p ecu so )b
m(Nd-p ecu so ) / g mass o V(Nd-p ecu so )b
m(Ce(III)-p ecu so ) / g mass o V(Ce(III)-p ecu so )b
m(Ce(IV)-p ecu so ) / g mass o V(Ce(IV)-p ecu so )b
m(compound) / g mass o solid s a ing compound lis ed in able 1 (p. 5)b
m(wa e ) / g mass o wa e added o expe imen al solu ionb
T / °C aimed empe a u e, as lis ed in able 2 (p. 6)
R(u ea) aimed aimed n(u ea)
n(Mn+) a io, as lis ed in able 2 (p. 6)
m(u ea) / g mass o u ea (Sigma-Ald ich (99.0 % o 100.5 %, ACS eagen )b
u ea addi ion hh:mm ime o u ea addi ion
is p s a smpl index o fi s sample whe e a p ecipi a e was isually ecognised
is p end smpl index o fi s colou less sample, indica ing he end o he p ecipi a ion
is p s a ime / min ela i e sampling ime in min o sample wi h index o is p s a smpl
is p end ime / min ela i e sampling ime in min o sample wi h index o is p end smpl
m(p ecipi a e) d ied / g mass o d ied p ecipi a ec,d
aVolumes pipe ed using an adjus able Eppendo Resea ch Plus pipe e (100 µL o 1000 µL).
bMasses weighed using a Me le -Toledo AG204 balance, o al- and a a-masses no included.
cMasses weighed using a Me le -Toledo AT201 balance, o al- and a a-masses no included.
dMass no use ul o de e mine a p ecipi a ion yield since he solu ion was sampled du ing p ecipi a ion.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
8 / 30
1.1. Sampling and pH measu emen s
Du ing he indi idual hyd olysis expe imen s, up o 19 samples o he supe na an we e aken. The expe imen
ID was ex ended wi h an index as su fix o o m sample IDs. The sample aken p io o he addi ion o u ea
was ex ended wi h -00, leading o example o he sample ID OB-17-01-00. In he case o expe imen OB-
17-01 i was sampled 10 imes (OB-17-01-00 o OB-17-01-09) and a pho og aph o each sample was aken.
The pho og aphs a e loca ed in he olde OB-17-01 sample pho og aphs (see figu e 3) and a e named wi h
he co esponding sample ID (e. g. OB-17-01-00.jpg). A collage showing all pho og aphs is p esen ed as
figu e 4.
Figu e 4: Samples aken du ing expe imen OB-17-01 (UO 2+
2,R(u ea) = 26, T= 100 °C) wi h he sample IDs
OB-17-01-00 o OB-17-01-09 (le o igh ).
Besides he olde wi h he pho og aphs o expe imen OB-17-01, he e exis s a cs files o each expe -
imen in he olde 01 eac ion ollow-up sampling+pH (see figu e 3), con aining he da a ela ed o he
sampling and he measu ed pH alues. The cs files (e. g. OB-17-01 sampling+pH.cs , see figu e 3) con-
sis o 10 columns, which a e comma sepa a ed. The column heade s indica e he da a se ies o he specific
column, which a e lis ed and desc ibed in able 4.
Table 4: Lis s o column heade s o he *sampling+pH.cs files (see figu e 3), as well as a b ie desc ip ion
o he co esponding da a and how i was ob ained.
heade desc ip ion
sample ID ID o he sample (expe imen ID + unning numbe )
ime abs / hh:mm:ss absolu e sampling ime
ime el / min ela i e sampling ime in minu es, calcula ed by sub ac ion ( ime abs - ”u ea addi ion”)a
Tsolu ion / °C empe a u e o solu ion in °C a momen o sampling, di ec ly measu ed
Toil / °C empe a u e o oil ba h in °C a momen o sampling, di ec ly measu ed
RT sampling / °C oom empe a u e in °C a momen o sampling, di ec ly measu ed
pH pH o he sample, di ec ly measu edb
Tsample / °C empe a u e o sample in °C du ing pH measu emen , di ec ly measu ed
RT measu emen / °C oom empe a u e in °C du ing pH measu emen , di ec ly measu ed
m(sample) / g sample mass, calcula ed by sub ac ion (m( ial) o al - m( ial) a a)c
aTime o u ea addi ion lis ed in hyd olysis expe imen s.cs ( able 3). Fi s and las sample assigned o 0 min and 1500 min, espec i ely.
bMeasu ed using a WTW pH 3110 pH me e , calib a ed daily using pH 4 and pH 7 bu e solu ions.
cMasses weighed using a Me le -Toledo AG204 balance, o al- and a a-masses no included.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
9 / 30
Acknowledgemen
The au ho s hank Koen Vanaken and Pe e D ies o labo a o y assis ance, as well as C´
ed ic Odeu s o
UV/Vis measu emen s and P isca Ve heyen o ICP-MS analyses. Mo eo e , we a e indeb ed o he commu-
ni ies behind he mul iple open-sou ce so wa e packages which we used. Financial suppo o his esea ch
was p o ided by he Eu opean Commission (p ojec : GENIORS - GEN IV In eg a ed Oxide uels Recycling
S a egies (755171)), and he Belgian FPS Economy (p ojec : ASOF - Ad anced Sepa a ion o Op imal man-
agemen o spen Fuel).
Re e ences
[1] C. Sch einemache s, O. Bollen, G. Leinde s, V. Ty pekl, G. Modolo, M. Ve we , K. Binnemans, and T.
Ca dinaels. “Hyd olysis o u anyl-, Nd-, Ce-ions and hei mix u es by he mal decomposi ion o u ea”.
In: Eu opean Jou nal o Ino ganic Chemis y (2021). DOI:10.1002/ejic.202100453.
[2] G. an Rossum. Py hon u o ial. Tech. ep. CS-R9526. Ams e dam: Cen um oo Wiskunde en In o -
ma ica (CWI), May 1995. URL:h ps://i .cwi.nl/pub/5007/05007D.pd .
[3] T. E. Oliphan . “Py hon o Scien ific Compu ing”. In: Compu ing in Science & Enginee ing 9.3 (2007),
pp. 10–20. DOI:10.1109/mcse.2007.58.
[4] W. McKinney. “pandas: a ounda ional Py hon lib a y o da a analysis and s a is ics”. In: Py hon o High
Pe o mance and Scien ific Compu ing 14 (2011).
[5] J. D. Hun e . “Ma plo lib: A 2D G aphics En i onmen ”. In: Compu ing in Science & Enginee ing 9.3
(2007), pp. 90–95. DOI:10.1109/MCSE.2007.55.
[6] T. Wangle, V. Ty pekl, T. Delloye, O. La che , J. Paka inen, T. Ca dinaels, J. Vleugels, and M. Ve we .
“Homogeneous hyd olysis o ho ium by he mal decomposi ion o u ea”. In: Radiochimica Ac a 106.8
(2018), pp. 645–653. DOI:10.1515/ ac -2017-2871.
[7] M. Wojdy . “Fi yk: a gene al-pu pose peak fi ing p og am”. In: Jou nal o Applied C ys allog aphy 43.5
(Sep . 2010), pp. 1126–1128. DOI:10.1107/s0021889810030499.
[8] C. Ve ani isagul, A. Kaew ilai, S. Sangnge n, W. Wa ana hana, S. Su ami , N. Koonsaeng, and A.
Laobu hee. “No el Reco e y o Nano-S uc u ed Ce ia (CeO2) om Ce(III)-Benzoxazine Dime Com-
plexes ia The mal Decomposi ion”. In: In e na ional Jou nal o Molecula Sciences 12.7 (2011), pp. 4365–
4377. ISSN: 1422-0067. DOI:10.3390/ijms12074365.
[9] M. B a o, A. C. Olwie , and B. Oelcke s. “Ni a e de e mina ion in chilean caliche samples by UV- isible
abso bance measu emen s and mul i a ia e calib a on”. In: Jou nal o he Chilean Chemical Socie y
54.1 (2009). DOI:10.4067/s0717-97072009000100022.
[10] C. Sch einemache s, G. Leinde s, G. Modolo, M. Ve we , K. Binnemans, and T. Ca dinaels. “The con-
e sion o ammonium u ana e p epa ed ia sol-gel syn hesis in o u anium oxides”. In: Nuclea Enginee -
ing and Technology 52.5 (May 2020), pp. 1013–1021. DOI:10.1016/j.ne .2019.11.004.
[11] C. Sch einemache s and G. Leinde s. The mal decomposi ion da a o u anium con aining mic osphe es
p oduced ia in e nal gela ion and ammonium diu ana e powde . (Ve sion 1.0.0) [Da a se ], License: CC
BY-NC-SA. July 2019. DOI:10.5281/zenodo.3250894.
[12] C. Sch einemache s, G. Leinde s, G. Modolo, M. Ve we , K. Binnemans, and T. Ca dinaels. “Fab ica-
ion o Nd- and Ce-doped u anium dioxide mic osphe es ia in e nal gela ion”. In: Jou nal o Nuclea
Ma e ials 535 (July 2020), p. 152128. DOI:10.1016/j.jnucma .2020.152128.
[13] C. Sch einemache s and G. Leinde s. Cha ac e isa ion da a o Nd- and Ce-doped u anium dioxide mi-
c osphe es p epa ed ia in e nal gela ion. (Ve sion 1.0.0) [Da a se ], License: CC BY-NC. 2020. DOI:
10.5281/zenodo.3560620.
[14] J. Schindelin, I. A ganda-Ca e as, E. F ise, V. Kaynig, M. Longai , T. Pie zsch, S. P eibisch, C. Rueden,
S. Saal eld, B. Schmid, J.-Y. Tine ez, D. J. Whi e, V. Ha ens ein, K. Elicei i, P. Tomancak, and A. Ca -
dona. “Fiji: an open-sou ce pla o m o biological-image analysis”. In: Na u e Me hods 9.7 (June 2012),
pp. 676–682. DOI:10.1038/nme h.2019.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
16 / 30
Appendix
Raw UV/Vis da a plo s
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-17-04-00_ aw_UVVIS
OB-17-04-01_ aw_UVVIS
OB-17-04-02_ aw_UVVIS
OB-17-04-03_ aw_UVVIS
OB-17-04-04_ aw_UVVIS
OB-17-04-05_ aw_UVVIS
OB-17-04-12_ aw_UVVIS
OB-17-04-13_ aw_UVVIS
Figu e 9: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-17-04.
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-17-05-00_ aw_UVVIS
OB-17-05-01_ aw_UVVIS
OB-17-05-02_ aw_UVVIS
OB-17-05-03_ aw_UVVIS
OB-17-05-04_ aw_UVVIS
OB-17-05-05_ aw_UVVIS
OB-17-05-06_ aw_UVVIS
OB-17-05-07_ aw_UVVIS
OB-17-05-08_ aw_UVVIS
OB-17-05-12_ aw_UVVIS
Figu e 10: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-17-05.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
17 / 30
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-17-06-00_ aw_UVVIS
OB-17-06-01_ aw_UVVIS
OB-17-06-02_ aw_UVVIS
OB-17-06-03_ aw_UVVIS
OB-17-06-04_ aw_UVVIS
OB-17-06-05_ aw_UVVIS
OB-17-06-06_ aw_UVVIS
OB-17-06-07_ aw_UVVIS
OB-17-06-08_ aw_UVVIS
OB-17-06-09_ aw_UVVIS
Figu e 11: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-17-06.
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-01-00_ aw_UVVIS
OB-18-01-01_ aw_UVVIS
OB-18-01-02_ aw_UVVIS
OB-18-01-03_ aw_UVVIS
OB-18-01-04_ aw_UVVIS
OB-18-01-05_ aw_UVVIS
OB-18-01-06_ aw_UVVIS
OB-18-01-07_ aw_UVVIS
OB-18-01-08_ aw_UVVIS
OB-18-01-09_ aw_UVVIS
OB-18-01-10_ aw_UVVIS
OB-18-01-11_ aw_UVVIS
OB-18-01-12_ aw_UVVIS
OB-18-01-13_ aw_UVVIS
OB-18-01-14_ aw_UVVIS
OB-18-01-15_ aw_UVVIS
OB-18-01-16_ aw_UVVIS
OB-18-01-17_ aw_UVVIS
Figu e 12: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-18-01.
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-02-00_ aw_UVVIS
OB-18-02-01_ aw_UVVIS
OB-18-02-02_ aw_UVVIS
OB-18-02-03_ aw_UVVIS
OB-18-02-04_ aw_UVVIS
OB-18-02-05_ aw_UVVIS
OB-18-02-06_ aw_UVVIS
OB-18-02-07_ aw_UVVIS
OB-18-02-08_ aw_UVVIS
OB-18-02-09_ aw_UVVIS
OB-18-02-10_ aw_UVVIS
OB-18-02-11_ aw_UVVIS
OB-18-02-12_ aw_UVVIS
OB-18-02-16_ aw_UVVIS
OB-18-02-17_ aw_UVVIS
Figu e 13: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-18-02.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
18 / 30
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-03-00_ aw_UVVIS
OB-18-03-01_ aw_UVVIS
OB-18-03-02_ aw_UVVIS
OB-18-03-03_ aw_UVVIS
OB-18-03-04_ aw_UVVIS
OB-18-03-05_ aw_UVVIS
OB-18-03-06_ aw_UVVIS
OB-18-03-07_ aw_UVVIS
OB-18-03-08_ aw_UVVIS
OB-18-03-09_ aw_UVVIS
OB-18-03-10_ aw_UVVIS
OB-18-03-11_ aw_UVVIS
OB-18-03-12_ aw_UVVIS
OB-18-03-13_ aw_UVVIS
OB-18-03-18_ aw_UVVIS
OB-18-03-19_ aw_UVVIS
Figu e 14: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-18-03.
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-04-00_ aw_UVVIS
OB-18-04-01_ aw_UVVIS
OB-18-04-02_ aw_UVVIS
OB-18-04-05_ aw_UVVIS
OB-18-04-10_ aw_UVVIS
OB-18-04-13_ aw_UVVIS
OB-18-04-14_ aw_UVVIS
OB-18-04-15_ aw_UVVIS
OB-18-04-16_ aw_UVVIS
OB-18-04-17_ aw_UVVIS
OB-18-04-18_ aw_UVVIS
OB-18-04-19_ aw_UVVIS
Figu e 15: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-18-04.
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-05-00_ aw_UVVIS
OB-18-05-01_ aw_UVVIS
OB-18-05-02_ aw_UVVIS
OB-18-05-03_ aw_UVVIS
OB-18-05-04_ aw_UVVIS
OB-18-05-05_ aw_UVVIS
OB-18-05-06_ aw_UVVIS
OB-18-05-07_ aw_UVVIS
OB-18-05-08_ aw_UVVIS
OB-18-05-09_ aw_UVVIS
OB-18-05-10_ aw_UVVIS
OB-18-05-11_ aw_UVVIS
OB-18-05-12_ aw_UVVIS
OB-18-05-13_ aw_UVVIS
OB-18-05-14_ aw_UVVIS
OB-18-05-15_ aw_UVVIS
OB-18-05-16_ aw_UVVIS
OB-18-05-17_ aw_UVVIS
OB-18-05-18_ aw_UVVIS
OB-18-05-18_ es_ es _ aw_UVVIS
Figu e 16: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-18-05.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
19 / 30
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-06-00_1-1000_ aw_UVVIS
OB-18-06-00_ aw_UVVIS
OB-18-06-01_ aw_UVVIS
OB-18-06-02_ aw_UVVIS
OB-18-06-08_ aw_UVVIS
OB-18-06-14_ aw_UVVIS
OB-18-06-15_ aw_UVVIS
OB-18-06-16_ aw_UVVIS
OB-18-06-18_1-1000_ aw_UVVIS
OB-18-06-18_ aw_UVVIS
Figu e 17: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-18-06.
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-06_dilu ed-00_1-100_ aw_UVVIS
OB-18-06_dilu ed-01_1-100_ aw_UVVIS
OB-18-06_dilu ed-02_1-100_ aw_UVVIS
OB-18-06_dilu ed-03_1-100_ aw_UVVIS
OB-18-06_dilu ed-08_1-100_ aw_UVVIS
OB-18-06_dilu ed-13_1-100_ aw_UVVIS
OB-18-06_dilu ed-14_1-100_ aw_UVVIS
OB-18-06_dilu ed-15_1-100_ aw_UVVIS
OB-18-06_dilu ed-18_1-100_ aw_UVVIS
Figu e 18: Visualisa ion o he aw UV/Vis da a o 1 : 100 dilu ed samples o expe imen OB-18-06.
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-07-00_ aw_UVVIS
OB-18-07-01_1-10_ aw_UVVIS
OB-18-07-01_ aw_UVVIS
OB-18-07-02_ aw_UVVIS
OB-18-07-03_ aw_UVVIS
OB-18-07-04_ aw_UVVIS
OB-18-07-04_ epe i ion_ aw_UVVIS
OB-18-07-05_ aw_UVVIS
OB-18-07-05_ epe i ion_ aw_UVVIS
OB-18-07-06_ aw_UVVIS
OB-18-07-07_ aw_UVVIS
OB-18-07-08_ aw_UVVIS
OB-18-07-09_ aw_UVVIS
OB-18-07-10_ aw_UVVIS
OB-18-07-11_ aw_UVVIS
OB-18-07-12_ aw_UVVIS
OB-18-07-13_ aw_UVVIS
OB-18-07-14_ aw_UVVIS
OB-18-07-15_ aw_UVVIS
OB-18-07-16_ aw_UVVIS
OB-18-07-17_ aw_UVVIS
OB-18-07-18_ aw_UVVIS
Figu e 19: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-18-07.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
20 / 30
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-08-00_ aw_UVVIS
OB-18-08-01_ aw_UVVIS
OB-18-08-02_ aw_UVVIS
OB-18-08-03_ aw_UVVIS
OB-18-08-04_ aw_UVVIS
OB-18-08-05_ aw_UVVIS
OB-18-08-06_ aw_UVVIS
OB-18-08-07_ aw_UVVIS
OB-18-08-08_ aw_UVVIS
OB-18-08-09_ aw_UVVIS
OB-18-08-10_ aw_UVVIS
OB-18-08-11_ aw_UVVIS
OB-18-08-12_ aw_UVVIS
OB-18-08-13_ aw_UVVIS
OB-18-08-14_ aw_UVVIS
OB-18-08-15_ aw_UVVIS
OB-18-08-16_ aw_UVVIS
OB-18-08-17_ aw_UVVIS
OB-18-08-18_ aw_UVVIS
Figu e 20: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-18-08.
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-09-00_ aw_UVVIS
OB-18-09-01_ aw_UVVIS
OB-18-09-02_ aw_UVVIS
OB-18-09-03_ aw_UVVIS
OB-18-09-04_ aw_UVVIS
OB-18-09-05_ aw_UVVIS
OB-18-09-06_ aw_UVVIS
OB-18-09-07_ aw_UVVIS
OB-18-09-08_ aw_UVVIS
OB-18-09-09_ aw_UVVIS
OB-18-09-10_ aw_UVVIS
OB-18-09-11_ aw_UVVIS
OB-18-09-12_ aw_UVVIS
OB-18-09-13_ aw_UVVIS
OB-18-09-14_ aw_UVVIS
OB-18-09-15_ aw_UVVIS
OB-18-09-17_ aw_UVVIS
OB-18-09-18_ aw_UVVIS
Figu e 21: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-18-09.
200 250 300
(nm)
0
1
2
3
4
5
Abso p ion
deu e ium lamp
400 500 600 700 800 900
(nm)
0.0
0.2
0.5
0.8
1.0
1.2
1.5
1.8
2.0 halogen lamp
OB-18-10-00_ aw_UVVIS
OB-18-10-01_ aw_UVVIS
OB-18-10-02_ aw_UVVIS
OB-18-10-03_ aw_UVVIS
OB-18-10-04_ aw_UVVIS
OB-18-10-05_ aw_UVVIS
OB-18-10-06_ aw_UVVIS
OB-18-10-07_ aw_UVVIS
OB-18-10-08_ aw_UVVIS
OB-18-10-09_ aw_UVVIS
OB-18-10-10_ aw_UVVIS
OB-18-10-11_ aw_UVVIS
OB-18-10-12_ aw_UVVIS
OB-18-10-13_ aw_UVVIS
OB-18-10-14_ aw_UVVIS
OB-18-10-15_ aw_UVVIS
OB-18-10-16_ aw_UVVIS
OB-18-10-17_ aw_UVVIS
OB-18-10-18_ aw_UVVIS
Figu e 22: Visualisa ion o he aw UV/Vis da a o he samples aken du ing expe imen OB-18-10.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
21 / 30
Reac ion ollow-up summa y plo s
2
4
6
8
pH
U (R=26, T=100 °C)
isual
p ecipi a ion
0
20
40
60
c(
x
)
/ mmol L 1
x
= U
0 100 200 300 400 500 600
Time / min
0
1
2
c(
x
)
s d
.
/ a. u.
Figu e 23: Summa y o da a o samples om expe imen OB-17-01.
2
4
6
8
pH
U (R=26, T=90 °C)
isual s a o p ecipi a ion,
no end no iced
0
20
40
60
c(
x
)
/ mmol L 1
0 100 200 300 400 500 600
Time / min
0
1
2
c(
x
)
s d
.
/ a. u.
Figu e 24: Summa y o da a o samples om expe imen OB-17-02.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
22 / 30
2
4
6
8
pH
U0.9Nd0.1 (R=26, T=90 °C)
isual s a o p ecipi a ion,
no end no iced
0
20
40
60
c(
x
)
/ mmol L 1
0 100 200 300 400 500 600
Time / min
0
1
2
c(
x
)
s d
.
/ a. u.
Figu e 25: Summa y o da a o samples om expe imen OB-17-03.
2
4
6
8
pH
U (R=52, T=90 °C)
isual
p ecipi a ion
0
20
40
60
c(
x
)
/ mmol L 1
x
= U
0 100 200 300 400 500 600
Time / min
0
1
2
c(
x
)
s d
.
/ a. u.
x
= U
Figu e 26: Summa y o da a o samples om expe imen OB-17-04.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
23 / 30
2
4
6
8
pH
U0.9Nd0.1 (R=52, T=90 °C)
isual
p ecipi a ion
0
20
40
60
c(
x
)
/ mmol L 1
x
= U
x
= Nd
0 100 200 300 400 500 600
Time / min
0
1
2
c(
x
)
s d
.
/ a. u.
x
= U
x
= Nd
Figu e 27: Summa y o da a o samples om expe imen OB-17-05.
2
4
6
8
pH
U0.75Nd0.25 (R=52, T=90 °C)
isual
p ecipi a ion
0
20
40
60
c(
x
)
/ mmol L 1
x
= U
x
= Nd
0 100 200 300 400 500 600
Time / min
0
1
2
c(
x
)
s d
.
/ a. u.
x
= U
x
= Nd
Figu e 28: Summa y o da a o samples om expe imen OB-17-06.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
24 / 30
2
4
6
8
pH
U0.75Nd0.25 (R=26, T=90 °C)
isual
p ecipi a ion
0
20
40
60
c(
x
)
/ mmol L 1
x
= U
x
= Nd
0 100 200 300 400 500 600
Time / min
0
1
2
c(
x
)
s d
.
/ a. u.
x
= U
x
= Nd
Figu e 29: Summa y o da a o samples om expe imen OB-18-01.
2
4
6
8
pH
U (R=26, T=90 °C)
isual
p ecipi a ion
0
20
40
60
c(
x
)
/ mmol L 1
x
= U
0 100 200 300 400 500 600
Time / min
0
1
2
c(
x
)
s d
.
/ a. u.
x
= U
Figu e 30: Summa y o da a o samples om expe imen OB-18-02.
Ch is ian Sch einemache s, Oli ie Bollen & G ego y Leinde s. (2021).
Da a o u anyl-, Nd-, Ce-hyd olysis and hei mix u es induced by he mal decomposi ion o u ea
(Ve sion 1.0.0) [Da a se ], License: cbn . Zenodo. DOI: 10.5281/zenodo.3841374
25 / 30
