Catalytic oxidation of toluene with molecular oxygen over Cr-substituted mesoporous materials

被引：42
|
作者：
Subrahmanyam, C
Louis, B
Rainone, F
Viswanathan, B [1 ]
Renken, A
Varadarajan, TK
机构：
[1] Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India
[2] Swiss Fed Inst Technol, Inst Chem Engn, CH-1015 Lausanne, Switzerland
来源：
APPLIED CATALYSIS A-GENERAL | 2003年 / 241卷 / 1-2期
关键词：
chromium; aluminophosphates; mesoporous materials; partial oxidation;
D O I：
10.1016/S0926-860X(02)00469-6
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 syntheses of thermally stable chromium-incorporating hexagonal mesoporous aluminophosphate and cubic Cr-MCM-48 have been reported. Characterization of the catalysts was made using low angle XRD, N-2 adsorption, UV-VISDRS, thermal analysis, ICP-AES and ESR. Mesoporous Cr-AlPO4 and Cr-MCM-48 catalysts have been found to be active for the vapour phase oxidation of toluene with molecular oxygen. Mesoporous Cr-AlPO4 is found to exhibit both acidic and redox properties and hence oxidation as well as dealkylation reactions are taking place in a concerted manner, whereas, the cubic silicate analogue acts as a pure redox catalyst. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：205 / 215
页数：11
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