Oxidative addition of hydrogen in "reduced" Mo/Al2O3 catalysts

被引：0

作者：

Startsev, AN ^{[1
]}

Klimov, OV ^{[1
]}

Sidyakin, MV ^{[1
]}

Voroshina, OV ^{[1
]}

Tchashkova, NA ^{[1
]}

Zakharov, II ^{[1
]}

Pashis, AV ^{[1
]}

Katinkin, AV ^{[1
]}

机构：

[1] Boreskov Inst Catalysis, Novosibirsk, Russia

来源：

REACTION KINETICS AND CATALYSIS LETTERS | 2003年 / 80卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

oxidative addition of hydrogen; Mo/Al2O3; catalysts; X-ray photoelectron spectroscopy; temperature-programmed desorption;

D O I：

10.1023/A:1026084226092

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：

An X-ray photoelectron spectroscopy study of Mo/Al2O3 catalysts prepared via [(Mo2O4)-O-V(C2O4)(2)(H2O)(2)](2-) complexes showed that after heating the catalysts with hydrogen in the spectrometer chamber, the position of the Mo3d line shifted to higher values of binding energy. This shift is interpreted as oxidative addition of hydrogen to the surface Mo species. A similar phenomenon was observed for a CO treated catalyst. A temperature-programmed desorption study has shown that hydrogen is strongly bound to Mo and can only be removed from the catalysts at temperatures as high as 500degreesC.

引用

页码：97 / 103

页数：7

共 15 条

[1] Mechanistic and theoretical analysis of the oxidative addition of H2 to six-coordinate molybdenum and tungsten complexes M(PMe3)4X2 (M = Mo, W; X = F, Cl, Br, I):: An inverse equilibrium isotope effect and an unprecedented halide dependence [J].