Effect of several cationic substitutions in the M1 active phase of the MoVTeNbO catalysts used for the oxidation of propane to acrylic acid

被引：56

作者：

Deniau, B. ^{[1
]}

Millet, J. M. M. ^{[1
]}

Loridant, S. ^{[1
]}

Christin, N. ^{[1
]}

Dubois, J. L. ^{[2
]}

机构：

[1] Univ Lyon 1, CNRS, UMR5256, IRCELYON,Inst Rech Catalyse & Environm Lyon, F-69626 Villeurbanne, France

[2] Arkema France, F-92705 Colombes, France

来源：

JOURNAL OF CATALYSIS | 2008年 / 260卷 / 01期

关键词：

Propane oxidation and ammoxidation; M1-phase; MoVTeNb oxide catalysts; Substitution; XRD;

D O I：

10.1016/j.jcat.2008.08.020

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：

Several cationic substitutions with Ti, Sn, Ge and W have been made in the M1 active phase of the MoVTe(Sb)NbO catalysts in order to improve their catalytic properties for the partial oxidation of propane into acrylic acid. The catalysts were characterized by BET, XRD and chemical analysis and were studied for propane oxidation. The results obtained show that these substitutions were possible but remain limited. It was noted that Ge increased the activity of the M1 phase whereas W maintained it and Ti and Sn decreased it. Concomitantly the selectivity to acrylic acid was slightly increased or decreased. The effect of Ge, which did not enter into the structure of the M1 phase has been related to an increase of the vanadium content of the M1 phase which occurs because of the formation of new Ge containing species in the slurry during the preparation of the catalyst. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：30 / 36

页数：7

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