Fourier transform infrared spectroscopic study of surface acidity by pyridine adsorption on the M1 active phase of the MoVTe(Sb)NbO catalysts used in propane oxidation

被引：55
作者：
Baca, M
Pigamo, A
Dubois, JL
Millet, JMM
机构：
[1] Univ Lyon 1, CNRS, Inst Rech Catalyse, F-69626 Villeurbanne, France
[2] Atofina SA, Ctr Rech Rhones Alpes, Lyon, France
来源：
CATALYSIS COMMUNICATIONS | 2005年 / 6卷 / 03期
关键词：
oxidation of propane; acrylic acid; MoVTe(Sb)NbO catalysts; pyridine adsorption;
D O I：
10.1016/j.catcom.2004.12.010
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 adsorption of pyridine on the surface of the MI active phase of the MoVTe(Sb)O catalysts has been studied for the determination of the Bronsted and Lewis acid sites. The results obtained showed medium Lewis and Bronsted acidity for antimony containing phases and low Lewis and Bronsted acidity for tellurium ones. The incorporation of niobium in the M1 phases resulted in a decrease of both acidities. The samples characterized have been tested as catalysts in the oxidation of propane to acrylic acid. The results obtained allowed to propose correlations between the acidic properties and the catalytic selectivity. (C) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：215 / 220
页数：6
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