锰、铈氧化物气凝胶的制备和其对CO氧化的催化性能

PREPARATION OF Mn-Ce OXIDE AEROGELS AND THEIR PERFORMANCES FOR CO OXIDATION

以无机盐为原料通过超临界干燥法制得了锰、铈氧化物气凝胶 ,初步考察了该气凝胶对 CO氧化的催化活性 .结果显示以超临界干燥法可以制得 1 0纳米以下的锰、铈氧化物纳米粒子 ,该纳米粒子对 CO氧化呈现出良好的催化活性 ,氧化锰和氧化铈之间存在着协同效应 .

Mn Ce oxide aerogels have been prepared by means of supercritical drying,with inorganic salts used as the input materials.The catalytic performances of these aerogel catalysts for CO oxidation are studied.Results show that nano particles of Mn Ce oxide with a size below 10 nm can be prepared by use of the supercritical drying method.These nano particles exhibit high activity for CO oxidation,which suggests that there exists synergetic effect of Mn and Ce oxides.