Detailed Information on Publication Record
2008
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
FAIMON, Jiří and Martin BLECHABasic information
Original name
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
Name in Czech
Interakce čerstvě vysráženého silikagelu s vodnými roztoky kyseliny křemičité za norlmálním podmínek: detailní analýza lineárního rychlostního zákona
Authors
FAIMON, Jiří (203 Czech Republic, guarantor) and Martin BLECHA (203 Czech Republic)
Edition
Aquatic Geochemistry, Netherlands, Springer Netherlands, 2008, 1380-6165
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
Geochemistry
Country of publisher
Netherlands
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 1.353
RIV identification code
RIV/00216224:14310/08:00025774
Organization unit
Faculty of Science
UT WoS
000253001100001
Keywords (in Czech)
Rozpouštění, růst, dynamika, chyba, experiment, tok, model, reversibilita, silikagel
Keywords in English
Dissolution; Growth; Dynamics; Error; Experiment; Flux; Model; Reversibility; Silica gel
Tags
Tags
International impact, Reviewed
Změněno: 24/9/2009 07:58, doc. Ing. Jiří Faimon, Dr.
V originále
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.
In Czech
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.
Links
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