Nanoscaled rutile active phase in Mo-V-Nb-O supported catalysts for the oxidation of propane to acrylic acid

被引：30
|
作者：
Lopez-Medina, Ricardo [2 ]
Fierro, J. L. G. [2 ]
Olga Guerrero-Perez, M. [1 ]
Banares, Miguel A. [2 ]
机构：
[1] Univ Malaga, Dept Ingn Quim, Escuela Ingn, E-29071 Malaga, Spain
[2] CSIC, Inst Catalisis & Petroleoquim, E-28049 Madrid, Spain
来源：
APPLIED CATALYSIS A-GENERAL | 2010年 / 375卷 / 01期
关键词：
Propane; Acrylic acid; V-Mo-O; V-Mo-Al-O; Rutile; Oxidation; Structure-activity relationship; In situ Raman; XRD; XPS; SN/V/NB/SB MIXED OXIDES; SELECTIVE OXIDATION; STRUCTURAL-CHARACTERIZATION; VSBO4; CATALYSTS; ACETIC-ACID; AMMOXIDATION; SB; ETHANE; DEHYDROGENATION; PERFORMANCE;
D O I：
10.1016/j.apcata.2009.12.017
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：
Alumina-stabilized nanosized rutile Mo-V-Nb-O oxide phases are prepared, characterized and used for the selective oxidation of propane to acrylic acid. Coverage on alumina support, atomic Mo/V molar ratio and calcination conditions (inert vs. oxidizing) affect the structure and catalytic performance. The effect of Mo/V ratio is opposite depending on calcination atmosphere. Segregated molybdenum oxides are not efficient while partially reduced rutile-type mixed molybdenum-vanadium oxide phases are efficient for the conversion of propane to acrylic acid. Niobium species would have a structural effect, stabilizing mixed molybdenum-vanadium oxide phases. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：55 / 62
页数：8
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