OXIDATION OF HYDROGEN OVER SUPPORTED PALLADIUM

被引：26

作者：

JONES, MG ^{[1
]}

NEVELL, TG ^{[1
]}

机构：

[1] PORTSMOUTH POLYTECH,DEPT CHEM,PORTSMOUTH PO1 2DT,ENGLAND

来源：

JOURNAL OF CATALYSIS | 1990年 / 122卷 / 02期

关键词：

D O I：

10.1016/0021-9517(90)90276-P

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：

Oxidation of hydrogen (0.1-2.0% v/v) in air over supported palladium catalysts at 300-625 K and atmospheric pressure has been investigated using a microcalorimetric method. The kinetics are influenced by reactor design, with activated processes at low temperatures and diffusion-limited rates at high temperatures. The mechanism involves a surface layer of PdO and weakly adsorbed H2. Water causes inhibition and reversible deactivation, particularly at low temperatures. The reaction is strongly inhibited by bromomethane (0.1-1.0% v/v) which competes with hydrogen for adsorption sites. © 1990.

引用

页码：219 / 229

页数：11

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