Investigation of hydration and protonic conductivity of H-montmorillonite

被引：33

作者：

Aliouane, N

Hammouche, A

De Doncker, RW

Telli, L

Boutahala, M

Brahimi, B

机构：

[1] Rhein Westfal TH Aachen, Inst Power Elect & Elect Dr, D-52066 Aachen, Germany

[2] F Abbas Univ, DPE, Lab Energies & Electrochem Solids, DZ-19000 Setif, Algeria

来源：

SOLID STATE IONICS | 2002年 / 148卷 / 1-2期

关键词：

H-montmorillonite; hydration; protonic conduction; solid-state electrochemical cell;

D O I：

10.1016/S0167-2738(02)00049-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, the hydration and protonic conductivity of H-montmorillonite were investigated. The hydration water state,, as characterized by DTA, TGA and XRD at different environmental relative humidities (RH). The results, showing good reproducibility and consistency, mark two distinguishable categories of hydration water: molecular H2O and H3O- species, those coordinated with the proton, The proportion of each was quantitatively analyzed. The electrical conductivity measured by impedance spectroscopy increases with RH front 10(-7) Omega(-1) cm(-1) at 0.2 RH up to 0.6 x 10(-2) Omega(-1) cm(-1) at 0.9 RH at 20degreesC. The mechanism of protonic conduction involved in H-montmorillonite is also discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：103 / 110

页数：8

共 22 条

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BAVEREZ M, 1973, CR ACAD SCI D NAT, V276, P2423

[2] APPLICATIONS OF EXCHANGED MONTMORILLONITE AS PROTONIC SOLID-ELECTROLYTE [J].