Published October 2006 | Version v1
Journal article Metadata-only

Dissolution kinetics of CsHSO4 and CsHSO4 /SiO2 composites in aqueous solutions

Creators

  • 1. SO RAN, Inst. Khimii Tverdogo Tela i Mekhanokhimii, Novosibirsk (Russian Federation)
  • 2. SO RAN, Inst. Kataliza im. G.K. Boreskova, Novosibirsk (Russian Federation)

Description

The dissolution kinetics of CsHSO4 and CsHSO4/SiO2 composites (40, 60, and 70 mol % SiO2) in aqueous solutions is studied by a differential dissolution method in a temperature range of 20-90 deg C. The results demonstrate that the composites and bulk CsHSO4 differ markedly in dissolution rate. In addition, the dissolution rate depends on the composition of the composite and decreases significantly as the SiO2 content is raised from 0 to 70 mol %, even though the particle size of the salt is notably smaller in the composites. The composites of the same composition may contain cesium hydrogen sulfate in several states, differing in dissolution rate

Abstract (Russian)

Методом дифференцирующего растворения исследована кинетика растворения CsHSO4 и композитов CsHSO4/SiO2 различного состава (40, 60, 70 мол. % SiO2) в водных растворах в интервале температур 20-90 град C. Установлено существенное различие в скоростях растворения индивидуальной соли и композитов. Обнаружено, что скорость растворения зависит от состава композита, уменьшаясь с ростом содержания SiO2 от 0 до 70 мол. %, несмотря на значительно меньший размер частиц соли в композитных системах. Показано наличие различных по скорости растворения состояний гидросульфата цезия в композитах одного состава

Additional details

Additional titles

Original title (Russian)
Кинетические особенности растворения CsHSO

Publishing Information

Journal Title
Neorganicheskie Materialy
Journal Volume
42
Journal Issue
10
Journal Page Range
p. 1223-1228
ISSN
0002-337X
CODEN
NEOMB8

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
38029726
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
AQUEOUS SOLUTIONS; CESIUM SULFATES; CHEMICAL COMPOSITION; CHEMICAL REACTION KINETICS; COMPOSITE MATERIALS; DISSOLUTION; HYDROGEN COMPOUNDS; PARTICLE SIZE; SILICON OXIDES; TEMPERATURE RANGE 0273-0400 K
Descriptors DEC
ALKALI METAL COMPOUNDS; CESIUM COMPOUNDS; CHALCOGENIDES; DISPERSIONS; HOMOGENEOUS MIXTURES; KINETICS; MATERIALS; MIXTURES; OXIDES; OXYGEN COMPOUNDS; REACTION KINETICS; SILICON COMPOUNDS; SIZE; SOLUTIONS; SULFATES; SULFUR COMPOUNDS; TEMPERATURE RANGE

Optional Information

Notes
9 refs., 6 figs., 1 tab.