Synthesis and catalytic property of Cu-Mn-Ce/γ-Al2O3 complex oxide
来源期刊：中国有色金属学报(英文版)2002年第2期
论文作者：黄可龙 王红霞 刘素琴 桂客
文章页码：317 - 320
Key words：purifying material；automobile exhaust; catalytic activity; bimetallic oxide catalyst; resistance to SO2-poisoning
Abstract: A new type of catalytic material for purification of automobile exhaust, Cu-Mn-Ce-O/γ-Al2O3, has been studied. The factors affecting its catalytic activity, such as calcination temperature and the period of calcinations and so on have been investigated. Its catalytic activity after SO2-poisoning was deter mined in a fixed-bed reactor by exposing the sample to the atmosphere of 160mL/min SO2/air. The study reveals that the catalyst has shown high catalytic activities for the conversion of NH3 oxidation by NO after sulfate. The conversion of NO reduction over the sulfated catalyst is somewhat higher than that over the fresh catalyst except that the optimum temperature has increased about 100℃. Also at the optimum process for the experiment, the selective catalytic oxidation of CO by NO is over 76% and the conversion of NO reduction is over 80% by NH3.
