Mesoporous Mn- and La-Doped Cerium Oxide/Cobalt Oxide Mixed Metal Catalysts for Methane Oxidation

被引：68

作者：

Vickers, Susan M. ^{[1
]}

Gholami, Rahman ^{[2
]}

Smith, Kevin J. ^{[2
]}

MacLachlan, Mark J. ^{[1
]}

机构：

[1] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada

[2] Univ British Columbia, Dept Chem & Biol Engn, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 21期

基金：

加拿大自然科学与工程研究理事会;

关键词：

methane oxidation; mesoporous; cobalt oxide; cerium oxide; KIT-6; hard templating; LOW-TEMPERATURE OXIDATION; COBALT OXIDES; CO3O4; CO; COMBUSTION; PROPERTY; CRYSTALS; NANORODS; CH4;

D O I：

10.1021/acsami.5b02367

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

New precious-metal-free mesoporous materials were investigated as catalysts for the complete oxidation of methane to carbon dioxide. Mesoporous cobalt oxide was first synthesized using KIT-6 mesoporous silica as a hard template. After removal of the silica, the cobalt oxide was itself used as a hard template to construct cerium oxide/cobalt oxide composite materials. Furthermore, cerium oxide/cobalt oxide composite materials doped with manganese and lanthanum were also prepared. All of the new composite materials retained the hierarchical long-range order of the original KIT-6 template. Temperature-programmed oxidation measurements showed that these cerium oxide/cobalt oxide and doped cerium oxide/cobalt oxide materials are effective catalysts for the total oxidation of methane, with a light-off temperature (T-50%) of similar to 400 degrees C observed for all of the nanostructured materials.

引用

页码：11460 / 11466

页数：7

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