EFFECT OF THE HYDROGEN AND HYDROGEN-SULFIDE PARTIAL PRESSURES IN THE HYDRODESULFURIZATION OF THIOPHENE AND HYDROGENATION OF CYCLOHEXENE ON RHODIUM-TUNGSTEN CATALYSTS

被引：7

作者：

DELEON, SG ^{[1
]}

GRANGE, P ^{[1
]}

DELMON, B ^{[1
]}

机构：

[1] UNITE CATALYSE & CHIM MAT DIVISES,B-1348 LOUVAIN,BELGIUM

来源：

APPLIED CATALYSIS A-GENERAL | 1993年 / 107卷 / 01期

关键词：

CYCLOHEXENE; HYDRODESULFURIZATION; HYDROGENATION; HYDROGEN PARTIAL PRESSURE; HYDROGEN SULFIDE PARTIAL PRESSURE; RHODIUM-TUNGSTEN; THIOPHENE;

D O I：

10.1016/0926-860X(93)85118-9

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：

WS2, alumina-supported rhodium sulfide, and mechanical mixtures of both were studied in the simultaneous hydrodesulfurisation (HDS) of thiophene and hydrogenation (HYD) of cyclohexene under hydrogen pressures of 2.2 and 1.1 MPa and with H2S partial pressure varying from 0.0 to 15 kPa. Rhodium sulfide has a promotional effect on WS2 both for HDS and HYD, as long as the H2S pressure remains low. At a H2S pressure in excess of about 3 kPa the activity of both the mechanical mixture and the pure rhodium sulfide decrease drastically. The control of the activity of WS2 by spillover of hydrogen from rhodium sulfide seems to explain the promotional effect. The accompanying loss of the promotional effect could be explained by an inhibition of the production of spillover hydrogen by H2S.

引用

页码：101 / 114

页数：14