MANGANESE OXIDES AS CATALYSTS FOR THE SELECTIVE REDUCTION OF NITROBENZENE TO NITROSOBENZENE

被引：39

作者：

MALTHA, A ^{[1
]}

FAVRE, TLF ^{[1
]}

KIST, HF ^{[1
]}

ZUUR, AP ^{[1
]}

PONEC, V ^{[1
]}

机构：

[1] LEIDEN UNIV,GORLAEUS LABS,2300 RA LEIDEN,NETHERLANDS

来源：

JOURNAL OF CATALYSIS | 1994年 / 149卷 / 02期

关键词：

D O I：

10.1006/jcat.1994.1304

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 activity and selectivity of various MnOx catalysts for the selective reduction of nitrobenzene to nitrosobenzene have been studied, measuring the rate in a continuous flow reactor. Characterisation of the catalysts has been performed with XRD, IR, UV/VIS, EM, and TPR. It appeared that the steady-state catalyst is in all cases the spinel Mn3O4 in a slightly reduced form. Without the addition of an external reductant to the feed, nitrobenzene was not only reduced but also oxidised, which created oxygen vacancies in the catalyst surface. Addition of an external reductant did not cause a change in the amount of nitrosobenzene formed, but the concentration of side products, like aniline and dimerisation products, increased. It is suggested that the selective reduction of nitrobenzene with the catalyst Mn3O4 runs by the Mars and Van Krevelen mechanism. (C) 1994 Academic Press, Inc.

引用

页码：364 / 374

页数：11

共 28 条

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