PORE STRUCTURE OF BULK TUNGSTEN CARBIDE POWDER CATALYSTS

被引：15

作者：

LOFBERG, A

SEYFRIED, L

BLEHEN, P

DECKER, S

BASTIN, JM

FRENNET, A

机构：

[1] Catalyse Hétérogène, Université Libre de Bruxelles, Brussels, B-1050

来源：

CATALYSIS LETTERS | 1995年 / 33卷 / 1-2期

关键词：

TUNGSTEN CARBIDE; POROUS STRUCTURE; MICROPOROSITY; HYDROGEN OXIDATION;

D O I：

10.1007/BF00817056

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：

Bulk tungsten carbide catalysts are prepared by direct carburization/reduction of tungsten trioxide in methane-hydrogen mixtures. The catalytic properties of such catalysts have been studied by several authors. The porous structure of these catalysts is studied by adsorption of N-2, Kr, CF4 and neohexane. Adsorption isotherms and hysteresis loops for the catalysts suggest the presence of a microporous structure made of parallel plates distant approximately by 20 Angstrom. These results are compared to those obtained using such catalysts for hydrogen oxidation and where condensation in the porous structure was observed.

引用

页码：165 / 173

页数：9

共 14 条

[1] STUDY OF HYDROGEN OXIDATION ON CARBIDES [J].