A study of Rh-Sm-V/SiO2 catalysts for the preparation of C2-oxygenates from syngas

被引：73

作者：

Luo, HY ^{[1
]}

Zhang, W ^{[1
]}

Zhou, HW ^{[1
]}

Huang, SY ^{[1
]}

Lin, PZ ^{[1
]}

Ding, YJ ^{[1
]}

Lin, LW ^{[1
]}

机构：

[1] Chinese Acad Sci, State Key Lab Catalysis, Dalian 116023, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2001年 / 214卷 / 02期

关键词：

zrhodium; vanadium; samarium; synthesis gas ethanol; acetaldehyde; acetic acid;

D O I：

10.1016/S0926-860X(00)00878-4

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：

Rh-Sm-V/SiO2 catalysts for the preparation of C-2-oxygenates were studied by CO + H-2 reactions under medium pressure. temperature-programmed reduction, adsorption of Hz and CO, and desorption of adsorbed hydrogen. The addition of Sm and V to the Rh/SiO2 catalyst obviously promoted the activity and selectivity to C-2-oxygenates. The Sm3+ ions on the catalysts can be reduced only with difficulty. These Sm3+ ions play roles of improving the dispersion of rhodium, increasing the uptakes of CO and H-2. and promoting the formation of acetic acid and acetaldehyde. Vanadium ions of lower valence have a good capacity of hydrogen storage, and this can enhance the hydrogenation ability of the catalyst, as well as promoting the formation of ethanol. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：161 / 166

页数：6

共 18 条

[11] ADSORPTION OF CARBON-MONOXIDE ON MANGANESE-PROMOTED RHODIUM SILICA CATALYSTS AS STUDIED BY INFRARED-SPECTROSCOPY [J].

STEVENSON, SA ;

LISITSYN, A ;

KNOZINGER, H .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (04) :1576-1581

[12] LANTHANA-PROMOTED RH/SIO2 .1. STUDIES OF CO AND H-2 ADSORPTION AND DESORPTION [J].

UNDERWOOD, RP ;

BELL, AT .

JOURNAL OF CATALYSIS, 1988, 109 (01) :61-75

[13]

WANG HY, 1994, CHIN J MOL CATAL, V8, P51

[14]

WANG YQ, 1999, CHINESE J CATAL, V20, P7

[15] THE FORMATION OF OXYGEN-CONTAINING ORGANIC-MOLECULES BY THE HYDROGENATION OF CARBON-MONOXIDE USING A LANTHANUM RHODATE CATALYST [J].

WATSON, PR ;

SOMORJAI, GA .

JOURNAL OF CATALYSIS, 1982, 74 (02) :282-295

[16] EFFECTS OF OXIDATION REDUCTION TREATMENTS ON THE MORPHOLOGY OF SILICA-SUPPORTED RHODIUM CATALYSTS [J].

WONG, C ;

MCCABE, RW .

JOURNAL OF CATALYSIS, 1987, 107 (02) :535-547

[17]

[No title captured]

[18]

[No title captured]

← 1 2 →