Microstructure and characterization of a highly selective catalyst for the isomerization of alkanes: A molybdenum oxycarbide

被引：102

作者：

Bouchy, C ^{[1
]}

Pham-Huu, C ^{[1
]}

Heinrich, B ^{[1
]}

Chaumont, C ^{[1
]}

Ledoux, MJ ^{[1
]}

机构：

[1] Univ Louis Pasteur Strasbourg 1, Lab Chim Mat Catalyt, GMI,IPCMS, ECPM,CNRS UMR 7504, F-67087 Strasbourg 2, France

来源：

JOURNAL OF CATALYSIS | 2000年 / 190卷 / 01期

关键词：

molybdenum oxycarbide; structure; alkanes isomerization; catalyst;

D O I：

10.1006/jcat.1999.2741

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 molybdenum oxycarbide catalyst that is very active and selective for the isomerization of n-alkanes has been characterized by means of diffraction techniques and simulations. The proposed structure is confirmed by transmission electron microscopy. An elemental analysis performed on the pure phase prepared from a bronze precursor provides the stoichiometry of this new catalyst. Quantitative temperature-programmed oxidation measurements confirm the elemental composition. The stoichiometry of this new phase, MoO2.42C0.23H0.78, shows an excess of light elements O, C, and H only possible because of the presence of metal vacancies. A tentative explanation of its peculiar catalytic properties is deduced from these structural and chemical features. (C) 2000 Academic Press.

引用

页码：92 / 103

页数：12

共 51 条

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