The reaction mechanism of the selective oxidation of butane on (VO)(2)P2O7 catalysts: The role of oxygen in the reaction chain to maleic anhydride

被引：44

作者：

Rodemerck, U

Kubias, B

Zanthoff, HW

Baerns, M

机构：

[1] INST ANGEW CHEM ADLERSHOF EV,D-12484 BERLIN,GERMANY

[2] RUHR UNIV BOCHUM,LEHRSTUHL TECH CHEM,D-44780 BOCHUM,GERMANY

来源：

APPLIED CATALYSIS A-GENERAL | 1997年 / 153卷 / 1-2期

关键词：

n-butane oxidation; maleic anhydride; VPO catalyst; oxygen exchange;

D O I：

10.1016/S0926-860X(96)00330-4

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：

Transient experiments in vacuo applying the Temporal-Analysis-of-Products (TAP) reactor were carried out to elucidate the role of oxygen in the reaction chain from n-butane to maleic anhydride over a quasi-equilibrated vanadyl pyrophosphate catalyst. The oxidation of butane and the intermediates butadiene and furan using O-18(2) as oxygen source showed that a redox mechanism operates in all reaction steps including the conversion of furan to maleic anhydride. The formation of CO2, however, is explained by both a redox mechanism and a mechanism in which adsorbed oxygen species are involved.

引用

页码：203 / 216

页数：14

共 18 条

[11]

GLEAVES JT, 1993, CATAL TODAY, V16, P69

[12] INFLUENCE OF REDUCTIVE PRETREATMENTS ON THE ACTIVITY AND SELECTIVITY OF VANADIUM PHOSPHORUS OXIDE CATALYSTS FOR NORMAL-BUTANE PARTIAL OXIDATION [J].