Three-dimensionally ordered and wormhole-like mesoporous iron oxide catalysts highly active for the oxidation of acetone and methanol.
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°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°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.
Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing, PR China.
Yunsheng
Y
Xia
Hongxing
H
Dai
Haiyan
H
Jiang
Lei
L
Zhang
Jiguang
J
Deng
Yuxi
Y
Liu
D000096:Acetone / Q000737:chemistry*; D002384:Catalysis; D018360:Crystallography, X-Ray; D005290:Ferric Compounds / Q000737:chemistry*; D000432:Methanol / Q000737:chemistry*; D010084:Oxidation-Reduction
D005290:Ferric Compounds; D000096:Acetone; C000499:ferric oxide; D000432:Methanol