天然气发动机三效催化剂  

Three-way catalyst for a natural-gas engine

作　　者：张强[1] 李娜[1,2] 李国祥[1] 

机构地区：[1]山东大学能源与动力工程学院,山东济南250061 [2]济南大学机械工程学院,山东济南250022

出　　处：《山东大学学报（工学版）》2010年第4期121-124,共4页Journal of Shandong University（Engineering Science）

基　　金：国家高技术研究发展计划(863计划)资助项目(2006AA11A1A8;2008AA11A120)

摘　　要：开发天然气发动机专用三效催化剂,以贵金属钯Pd、同时添加少量铂Pt作为活性组份。在试验室小样评价系统上对所制备的不同催化剂涂层材料和活性助剂进行起燃温度、转化效率和耐久性对比评价。小样试验结果表明,Si-Al-O体系的材料兼具较好的耐硫中毒性能和最大转化效率,因此选用Al2O3/SiO2作为天然气车用三效催化剂涂层材料,活性催化助剂Co-Ce-Mn-O老化后起燃温度和转化效率的指标最佳,适合作为活性助剂。The special three-way catalyst for a natural-gas engine was studied by using noble metal Pd and a small amout of Pt as the activated composition.The light-off temperature,conversion efficiency and durability were studied by using different coating materials and activated assistants on the testing small sample catalyst evaluation system.The experimental results showed that Al2O3/SiO2 could be adopted as a coating material of the three-way catalyst for Si-Al-O had better resistance to sulfur poisoning and maximal conversion efficiency.The Co-Ce-Mn-O catalyst assistant could be used as an activated assistant for the best property data of the light-off temperature and conversion efficiency.

关 键 词：天然气发动机 催化剂 涂层材料 活性助剂 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]