Hydrolytic reactions in hydrated iridium chloride coatings

被引：14

作者：

Kristof, J

Mihaly, J

Daolio, S

DeBattisti, A

Nanni, L

Piccirillo, C

机构：

[1] CNR,IST POLAROG & ELETTROCHIM PREPARAT,I-35127 PADUA,ITALY

[2] UNIV VESZPREM,DEPT ANALYT CHEM,H-8201 VESZPREM,HUNGARY

[3] UNIV FERRARA,DIPARTMENTO CHIM,I-44100 FERRARA,ITALY

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1997年 / 434卷 / 1-2期

关键词：

electrocatalysis; oxide film electrode; hydrolysis; thermal analysis; emission FTIR spectroscopy; secondary ion mass spectrometry;

D O I：

10.1016/S0022-0728(96)05068-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A hydrolytic side reaction in hydrated iridium chloride films heat-treated on titanium supports was discovered by simultaneous thermal analysis, emission FTIR and SIMS techniques. In the presence of water vapour the degree of hydrolysis increases significantly in the outermost part of the film leading to the formation of oxidic species at low temperatures. In a wet oxygen atmosphere encapsulated hydrogen chloride as a hydrolysis product reacts with the support to form titanium chloride species segregated in the surface region of the coating. In addition to the formation of hydrolysis products, the presence of surface species like iridium carbonyl and iridium carboxylate was also confirmed in the coating. (C) 1997 Elsevier Science S.A.

引用

收藏

页码：99 / 104

页数：6

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