硫化处理对负载钯催化剂甲烷低温催化燃烧性能的影响  

Effect of sulpher treatment on the performance of supported palladium catalysts for low temperature methane catalytic combustion

作　　者：陈安娜[1] 马磊[1] 

机构地区：[1]浙江工业大学工业催化研究所绿色化学合成技术国家重点实验室培育基地,浙江杭州310032

出　　处：《工业催化》2013年第6期22-25,共4页Industrial Catalysis

基　　金：国家自然科学基金(20703037)资助项目

摘　　要：采用浸渍法制备氧化硅负载钯催化剂,考察硫化气氛和硫化时间对催化剂性能的影响,并采用XRD对催化剂进行表征。结果表明,硫化后形成的Pd4S物种可以提高催化剂抗硫中毒性能,同时催化剂表面的SPd4S/SPd对催化活性有重要影响,改变硫化气氛和硫化时间可以调节Pd4S物种的形成和SPd4S/SPd。The silica supported palladium catalysts were prepared by impregnation method and characterized by X-ray diffraction. The influence of curing gases and curing time on the sulfur tolerance performance of the catalysts was investigated. The results showed that Pd4S species formed through sulphur treatment could improve the sulfur tolerance performance of the catalysts, and Spd4s/Spa ratio on the catalyst surface had an important effect on catalytic activity. In addition, the formation of Pd4S and Spd4s/Spd ratio could be modified by changing curing gases and curing time.

关 键 词：催化化学 甲烷催化燃烧 抗硫性能 硫化 Pd4S SPd4S SPD 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]