METAL DISPERSION DEPENDENT SELECTIVITIES FOR SYNGAS CONVERSION TO ETHANOL ON V2O3 SUPPORTED RHODIUM

被引：36

作者：

GRONCHI, P

TEMPESTI, E

MAZZOCCHIA, C

机构：

[1] POLITECN MILAN,DEPT IND CHEM & CHEM ENGN,I-20133 MILAN,ITALY

[2] UNIV BRESCIA,DEPT CHEM PHYS & MAT SCI,I-25123 BRESCIA,ITALY

来源：

APPLIED CATALYSIS A-GENERAL | 1994年 / 120卷 / 01期

关键词：

DISPERSION; ETHANOL; RHODIUM VANADIA; SYNGAS CONVERSION;

D O I：

10.1016/0926-860X(94)80337-4

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：

The influence of dispersion on the interactions of hydrogen and carbon monoxide with Rh/V2O3 has been investigated (transmission electron microscopy and temperature-programmed desorption). The catalysts having a 0.2% Rh loading were more highly dispersed (8-12 Angstrom) than the catalysts with 1.0% Rh (35-40 Angstrom). Up to 523 K a higher selectivity towards ethanol than towards carbon dioxide is observed upon decreasing the metal dispersion. The metal particle size is being evaluated as a factor of importance for carbon monoxide dissociation.

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页码：115 / 126

页数：12

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