SUPPORTED CO-MO THIN-FILM SULFIDE CATALYSTS FOR HYDRODESULFURIZATION .2. EFFECTS OF CATALYST SURFACE-STRUCTURE ON HYDRODESULFURIZATION ACTIVITY

被引：13

作者：

MCINTYRE, NS ^{[1
]}

CHAN, TC ^{[1
]}

SPEVACK, PA ^{[1
]}

BROWN, JR ^{[1
]}

机构：

[1] ENERGY RES LAB, OTTAWA K1A 0G1, ONTARIO, CANADA

来源：

APPLIED CATALYSIS | 1990年 / 63卷 / 02期

关键词：

catalyst characterization (XPS; cobalt-molybdenum/alumina; hydrodesulphurization; scanning Auger microscopy); thin-film precursor;

D O I：

10.1016/S0166-9834(00)81727-3

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：

Thin film cobalt-molybdenum oxides, deposited with varying composition and structure on an alumina support, have been used as precursor oxides to form model hydrodesulphurization catalysts. The hydrodesulphurization (HDS) activities of the reduced and sulphided thin films have been measured in a closed cycle reactor, and the final surface composition and structure of the catalysts have been studied using X-ray photoelectron spectrometry (XPS) directly interfaced to the reactor. The presence of cobalt is found to increase the sulphidation of molybdenum oxide precursor. A thin film precursor oxide with an oxide structure of CoMoO4 was found to produce the most HDS-active sulphide surface. The corresponding XPS spectra show that both molybdenum and cobalt species have structures which differ from those of MoS2 and Co9S8. © 1990.

引用

页码：391 / 401

页数：11

共 17 条

[1] A COMBINED X-RAY PHOTOELECTRON AND MOSSBAUER EMISSION-SPECTROSCOPY STUDY OF THE STATE OF COBALT IN SULFIDED, SUPPORTED, AND UNSUPPORTED CO-MO CATALYSTS [J].