Spectroscopic investigation of structure and mechanism of proton conductivity CsHSO4 and composites CsHSO4/SiO2

被引：16

作者：

Burgina, E. B. ^{[1
]}

Ponomareva, V. G.

Baltahinov, V. P.

Kostrovskiy, V. G.

机构：

[1] Russian Acad Sci, Boreskov Inst Catalysis, Siberian Div, Novosibirsk, Russia

[2] Russian Acad Sci, Inst Solid Chem & Mechanochem, Siberian Div, Novosibirsk, Russia

来源：

JOURNAL OF STRUCTURAL CHEMISTRY | 2005年 / 46卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

proton electrolytes; composites; disordered phases; CsHSO4; IR and RS spectra; hydrogen bond;

D O I：

10.1007/s10947-006-0178-y

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

IR and RS spectra, structural, thermodynamical and transport properties of CsHSO4 and CsHSO4/SiO2 composites have been investigated. It is shown that CsHSO4 is stabilized in composites in phase 11 (monoclinic modification), which turns into amorphous state with increasing silicon dioxide content. A formation of disordered highly conducting states of CsHSO4 in composites at the temperatures noticeably lower than superionic phase transition was stated. Bond length equalization in sulfate-ions, weakening of hydrogen bond system, and as a result easier proton transfer in composites in comparison with pure salt take place in these conducting states. Mechanism for formation of composites and their proton conductivity is proposed.

引用

页码：608 / 618

页数：11

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