Three-dimensionally ordered and wormhole-like mesoporous iron oxide catalysts highly active for the oxidation of acetone and methanol

被引：84

作者：

Xia, Yunsheng ^{[1
]}

Dai, Hongxing ^{[1
]}

Jiang, Haiyan ^{[1
]}

Zhang, Lei ^{[1
]}

Deng, Jiguang ^{[1
]}

Liu, Yuxi ^{[1
]}

机构：

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

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 186卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Three-dimensional mesoporous iron oxide; Hard-templating fabrication; Citric acid-complexing method; Volatile organic compounds; Catalytic oxidation; VOLATILE ORGANIC-COMPOUNDS; CRYSTALLINE WALLS; CHROMIUM-OXIDE; COMBUSTION; TOLUENE; DEHYDROGENATION; ETHYLACETATE; REPLICATION; PERFORMANCE; SURFACES;

D O I：

10.1016/j.jhazmat.2010.10.073

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Three-dimensionally (3D) ordered and wormhole-like mesoporous iron oxides (denoted as Fe-KIT6 and Fe-CA) were respectively prepared by adopting the 3D ordered mesoporous silica KIT-6-templating and modified citric acid-complexing strategies, and characterized by a number of analytical techniques. It is shown that the Fe-KIT6-400 and Fe-CA-400 catalysts derived after 400 degrees C-calcination possessed high surface areas (113-165 m(2)/g), high surface adsorbed oxygen concentrations, and good low-temperature reducibility, giving 90% conversion below 189 and 208 degrees C for acetone and methanol oxidation at 20,000 mL/(g h), respectively. It is believed that the good catalytic performance of Fe-CA-400 and Fe-KIT6-400 was related to factors such as higher surface area and oxygen adspecies concentration, better low-temperature reducibility, and 3D mesoporous architecture. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：84 / 91

页数：8

共 34 条

[1] Activated carbon and tungsten oxide supported on activated carbon catalysts for toluene catalytic combustion [J].