石油化工2012，Vol.41Issue(7)：830-834,5.
助剂负载量和焙烧温度对K/CuAl复合氧化物催化分解N2O性能的影响
Effect of K Loading and Calcination Temperature on Catalytic Performance of K/CuAl Composite Oxides for N2O Decomposition
摘要
Abstract
K-doped CuAl composite oxides(K/CuAl) were prepared by an isochoric impregnation of CuAl composite oxide with K2CO3 solution, which was prepared by calcination of CuAl hydrotalcite-like compound obtained by a co-precipitation method, and characterized by means of XRD, BET, H2-TPR and XPS. The effects of K loading and calcination temperature on the activity of K/CuAl for N2O decomposition in the presence of oxygen were investigated. The results show that the catalytic activity of K/CuAl, especially the one with the atom ratio of K to Cu 0.10 calcined at 400 ℃, was significantly enhanced by the addition of K species. The optimized K/CuAl catalyst exhibited a good stability in N2O decomposition, the N2O conversion could be 90% or 60% at 500 ℃ for 10 h with the feed gases containing oxygen or both oxygen and steam, respectively. The resistances of the catalyst to oxygen and water were evidently improved by the addition of K.关键词
一氧化二氮/催化分解/钾改性铜铝复合氧化物/焙烧温度Key words
nitrous oxide/ catalytic decomposition/ potassium-modified copper-alumina composite oxides/ calcination temperature分类
化学化工引用本文复制引用
冯鸣,姬长春,李明明,徐秀峰..助剂负载量和焙烧温度对K/CuAl复合氧化物催化分解N2O性能的影响[J].石油化工,2012,41(7):830-834,5.基金项目
教育部留学回国人员科研启动基金项目(2004-527). （2004-527）
