石油化工2015，Vol.44Issue(12)：1518-1523,6.
CuMn2TiO6催化剂的制备及其甲烷催化燃烧性能
Preparation of CuMn2TiO6 and Its Activities in Catalytic Combustion of Methane
丁天朋 1赵伟 2孟明 2陈春辉 1靳琳浩2
作者信息
- 1. 天津大学 化工学院,天津 300072
- 2. 新奥科技发展有限公司,河北 廊坊 065001
- 折叠
摘要
Abstract
A series of composite oxide catalysts,namely CuTiO3,Mn2TiO5,CuMn2O4 and CuMn2TiO6,for the catalytic combustion of methane were prepared by sol-gel method. Then CuMn2TiO6 catalysts were prepared by co-precipitation and impregnation method,separately. The eff ects of chemical composition and preparation methods on the structure and properties of the catalysts were investigated by means of XRD,H2-TPR,N2 adsorption-desorption and TEM. The performances of the catalysts in the catalytic combustion of methane were evaluated in a fixed-bed reactor. The results showed that the introduction of Ti could inhibit the growth of catalyst particles and improve the reducibility of the catalysts,which enhanced their catalytic activity. Furthermore,the XRD result indicated that Mn2O3 and Mn1.5Cu1.5O4 were the major active species. The catalysts prepared by the sol-gel and impregnation methods mostly consisted of CuO,Mn2O3 and Cu1.5Mn1.5O4,while the catalysts prepared by the co-precipitation method mainly consisted of spinel Cu1.5Mn1.5O4,which had much higher catalytic activity in the methane combustion. The methane conversion over the Cu1.5Mn1.5O4 catalyst reached 90% under the conditions of GHSV 12 000 h-1 and 432℃.关键词
复合氧化物催化剂/甲烷催化燃烧/共沉淀法/溶胶-凝胶法Key words
composite oxide cat alysts/methane catalytic combustion/co-precipitation method/sol-gel method分类
化学化工引用本文复制引用
丁天朋,赵伟,孟明,陈春辉,靳琳浩..CuMn2TiO6催化剂的制备及其甲烷催化燃烧性能[J].石油化工,2015,44(12):1518-1523,6.
