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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F08%3A00025774%21RIV10-MSM-14310___
rdf:type
n10:Vysledek skos:Concept
dcterms:description
Interaction of freshly precipitated silica gel with aqueous solutions was studied at laboratory batch experiments under ambient and near neutral pH-conditions. The overall process showed excellent reversibility: gel growth could be considered as an opposite process to dissolution and a linear rate law could be applied to experimental data. Depending on the used rate law form, the resulting rate constants were sensitive to errors in parameters/variables such as gel surface area, equilibrium constants, Si-fluxes, and reaction quotients. The application of an Integrated Exponential Model appeared to be the best approach for dissolution data evaluation. In contrast, a Differential Model gave best results for growth data modeling. An universal value of activation energy for growth of any silica polymorph is not consistent with the value for silica gel growth, which questions the hypothesis about one unique activated complex controlling the silica polymorph growth. Interaction of freshly precipitated silica gel with aqueous solutions was studied at laboratory batch experiments under ambient and near neutral pH-conditions. The overall process showed excellent reversibility: gel growth could be considered as an opposite process to dissolution and a linear rate law could be applied to experimental data. Depending on the used rate law form, the resulting rate constants were sensitive to errors in parameters/variables such as gel surface area, equilibrium constants, Si-fluxes, and reaction quotients. The application of an Integrated Exponential Model appeared to be the best approach for dissolution data evaluation. In contrast, a Differential Model gave best results for growth data modeling. An universal value of activation energy for growth of any silica polymorph is not consistent with the value for silica gel growth, which questions the hypothesis about one unique activated complex controlling the silica polymorph growth.
dcterms:title
Interaction of Freshly Precipitated Silica Gel with Aqueous Silicic Acid Solutions under Ambient and Near Neutral pH-conditions: A Detailed Analysis of Linear Rate Law Interaction of Freshly Precipitated Silica Gel with Aqueous Silicic Acid Solutions under Ambient and Near Neutral pH-conditions: A Detailed Analysis of Linear Rate Law
skos:prefLabel
Interaction of Freshly Precipitated Silica Gel with Aqueous Silicic Acid Solutions under Ambient and Near Neutral pH-conditions: A Detailed Analysis of Linear Rate Law Interaction of Freshly Precipitated Silica Gel with Aqueous Silicic Acid Solutions under Ambient and Near Neutral pH-conditions: A Detailed Analysis of Linear Rate Law
skos:notation
RIV/00216224:14310/08:00025774!RIV10-MSM-14310___
n3:aktivita
n17:Z n17:S
n3:aktivity
S, Z(MSM0021622412)
n3:cisloPeriodika
1
n3:dodaniDat
n12:2010
n3:domaciTvurceVysledku
n8:2684284 n8:6717373
n3:druhVysledku
n18:J
n3:duvernostUdaju
n16:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
372808
n3:idVysledku
RIV/00216224:14310/08:00025774
n3:jazykVysledku
n5:eng
n3:klicovaSlova
Dissolution; Growth; Dynamics; Error; Experiment; Flux; Model; Reversibility; Silica gel
n3:klicoveSlovo
n6:Reversibility n6:Dissolution n6:Experiment n6:Flux n6:Growth n6:Silica%20gel n6:Dynamics n6:Error n6:Model
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[F4FDFB7FB84A]
n3:nazevZdroje
Aquatic Geochemistry
n3:obor
n4:DD
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:rokUplatneniVysledku
n12:2008
n3:svazekPeriodika
14
n3:tvurceVysledku
Faimon, Jiří Blecha, Martin
n3:wos
000253001100001
n3:zamer
n14:MSM0021622412
s:issn
1380-6165
s:numberOfPages
40
n9:organizacniJednotka
14310