Chloropentafluoroethane hydrodechlorination over tungsten carbides: Influence of surface stoichiometry

被引：16

作者：

Delannoy, L ^{[1
]}

Giraudon, JM ^{[1
]}

Granger, P ^{[1
]}

Leclercq, L ^{[1
]}

Leclercq, G ^{[1
]}

机构：

[1] Univ Sci & Technol Lille, Catalyse Lab, UPRESA 8010, F-59655 Villeneuve Dascq, France

来源：

JOURNAL OF CATALYSIS | 2002年 / 206卷 / 02期

关键词：

tungsten carbide; catalytic hydrodechlorination; chloropentafluoroethane; X-ray photoelectron spectroscopy; acidic properties of WC; decomposition of isopropanol;

D O I：

10.1006/jcat.2001.3491

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：

Tungsten carbides were prepared by temperature-programmed reaction of WO3 with methane/hydrogen mixture and activated according to several thermal treatments by varying the temperature or the feed composition. Modification of these parameters was expected to change the surface composition (C/W). Such surface modifications have been related to acid-base properties observed in the decomposition of isopropanol. Finally, it was found that such acidic properties arc probably involved in the dehydrohalogenation of chloropentafluoroethane responsible mainly for the formation of unsaturated compounds. (C) 2002 Elsevier Science (USA).

引用

页码：358 / 362

页数：5

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