LI Sha-sha~1, LIU Jian-zhou~1, WU Jie~2,LI Guo-ling~1,WANG Ping~1, JI Qin-qin~1 (1.Key laboratory of Coal Processing and Efficient Utilization, China University of Mining and Technology, Xuzhou 221116, China; 2.Xuzhou Jinqiao Petrochemical pipeline transportation Technology Co., Ltd., Xuzhou 221116, China)The γ-Al_2O_3 was used as support prepared by chemical coprecipitation-gel method, and the components of catalyst were loaded on the support through impregnation, as well the K_2O, MgO and CeO_2 as catalytic promoter, PdO as the active component, the catalyzer to combustion CH_4 of low concentration were be made and investigated the effect of heating rate of activation, the species and adding ways of additive. The results showed that the higher activation could be obtained in excess oxygen with low speed of oxidation; it presented upper activation with the method of impregnation to rather than co-precipitation; the adding of K_2O、MgO and CeO_2 could improve the activity of the catalyst, and the more content of adding, the higher activity showed except K_2O, while the activity got higher with 20% CeO_2 catalyst.
2010 01 v.16;No.65 [Abstract][OnlineView][Download 386K]