摘要
A new type of catalytic material for purification of automobile exhaust, Cu Mn Ce O/ γ Al 2O 3, 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 SO 2 poisoning was determined in a fixed bed reactor by exposing the sample to the atmosphere of 160?mL/min SO 2/air. The study reveals that the catalyst has shown high catalytic activities for the conversion of NH 3 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 NH 3.
A new type of catalytic material for purification of automobile exhaust, Cu Mn Ce O/ γ Al 2O 3, 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 SO 2 poisoning was determined in a fixed bed reactor by exposing the sample to the atmosphere of 160?mL/min SO 2/air. The study reveals that the catalyst has shown high catalytic activities for the conversion of NH 3 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 NH 3.
出处
《中国有色金属学会会刊：英文版》
CSCD
2002年第2期317-320,共4页
Transactions of Nonferrous Metals Society of China
