SELECTIVE OXIDATION OF NORMAL-BUTANE TO MALEIC-ANHYDRIDE - A COMPARATIVE-STUDY BETWEEN PROMOTED AND UNPROMOTED VPO CATALYSTS

被引：22

作者：

BEJ, SK ^{[1
]}

RAO, MS ^{[1
]}

机构：

[1] INDIAN INST TECHNOL,DEPT CHEM ENGN,KANPUR 208016,UTTAR PRADESH,INDIA

来源：

APPLIED CATALYSIS A-GENERAL | 1992年 / 83卷 / 02期

关键词：

BUTANE OXIDATION; MALEIC ANHYDRIDE; SELECTIVITY (MALEIC ANHYDRIDE); VPO;

D O I：

10.1016/0926-860X(92)85032-7

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：

A comparative study has been conducted between a promoted VPO catalyst (promoted with molybdenum and cerium added simultaneously) and an unpromoted VPO catalyst with respect to their characteristics and catalytic performance. It was observed that the promoted VPO catalyst produced higher yields of maleic anhydride (MA) as compared to the unpromoted one but at comparatively more severe conditions of operations (i.e., higher reaction temperature, higher contact time and higher inlet n-butane concentration). Characterization studies revealed that molybdenum prevents further reduction of V(IV) to V(III), whose transformation was probably responsible for the production of oxides of carbon. As a result, promoted catalyst showed higher selectivity toward MA as compared to the unpromoted one.

引用

页码：149 / 163

页数：15

共 23 条

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