Preparation and catalytic performance of cylinder- and cake-like Cr2O3 for toluene combustion

被引：37

作者：

Bai, Guangmei ^{[1
]}

Dai, Hongxing ^{[1
]}

Liu, Yuxi ^{[1
]}

Ji, Kemeng ^{[1
]}

Li, Xinwei ^{[1
]}

Xie, Shaohua ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Lab Catalysis Chem & Nanosci, Beijing 100124, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2013年 / 36卷

关键词：

Chromia catalyst; Catalytic toluene oxidation; Hydrothermal synthesis; Microemulsion fabrication; Oxygen adspecies; MESOPOROUS CHROMIUM-OXIDE; SINGLE-CRYSTAL CR2O3; OXIDATIVE DEHYDROGENATION; ELIMINATION; LANTHANUM; CO3O4; VOCS;

D O I：

10.1016/j.catcom.2013.02.025

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：

Cylinder- and cake-like Cr2O3 with a rhombohedral structure were fabricated using the hydrothermal and microemulsion methods, respectively. It is found that surface areas, surface Cr6+ and oxygen adspecies concentrations, and low-temperature reducibility of cake-like Cr2O3 were much higher or better than those of the bulk counterpart. The cake-like Cr2O3 sample showed the best catalytic performance for toluene combustion, giving the T-50% and T-90% of 229 and 240 degrees C at SV = 20,000 mL/(g h), respectively. The excellent catalytic performance of cake-like Cr2O3 was associated with its oxygen adspecies concentration and good low-temperature reducibility. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：43 / 47

页数：5

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