THE ACTIVITY OF MOLYBDENUM AND MOLYBDENUM OXIDE MODEL CATALYSTS FOR OLEFIN METATHESIS

被引：25

作者：

BARTLETT, B

SOTO, C

WU, R

TYSOE, WT

机构：

[1] UNIV WISCONSIN,DEPT CHEM,MILWAUKEE,WI 53211

[2] UNIV WISCONSIN,SURFACE STUDIES LAB,MILWAUKEE,WI 53211

来源：

CATALYSIS LETTERS | 1993年 / 21卷 / 1-2期

关键词：

OLEFIN METATHESIS; CATALYTIC ACTIVITY; MODEL CATALYSTS; MOLYBDENUM OXIDES; SURFACE ANALYSIS;

D O I：

10.1007/BF00767364

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 of various molybdenum oxides supported on a molybdenum foil substrate for the catalysis of propylene metathesis is measured using an isolatable, high-pressure reactor incorporated in an ultra-high vacuum (UHV) chamber which allows samples to be transferred directly from vacuum into the catalytic test chamber. MoO(x) samples are prepared both by oxidation of metallic molybdenum and reduction of molybdenum trioxide. The results suggest that the presence of an oxygen overlayer on the catalyst inhibits reaction and that the ranking of activity for metathesis at 870 K using 450 Torr of propylene for oxide samples is MoO2 > MoO3 > MO where MoO2 is approximately 30 times more active than molybdenum metal under these conditions.

引用

页码：1 / 10

页数：10

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