State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
会议录
Asia-Pacific Congress on Catalysis:Abstracts vol.3; 20031012-15; Dalian(CN)
会议地点
Dalian(CN)
召开年
2003
分类号
TQ032
摘要
Low temperature CO oxidation has attracted considerable attentions because of its significance in environmental protection, fuel cell, reduction of hazardous substances in tobacco, air- purification for respiratory, CO gas sensors and closed-cycle CO%_2 lasers. Up to now, catalysts for CO oxidation consist mainly of metal oxides with variable oxidation states and supported noble metals (such as Pd, Pt, Au, etc.) on reducible oxides or on inert oxides. However, catalyst based on NaZSM-5 zeolite f...更多
Low temperature CO oxidation has attracted considerable attentions because of its significance in environmental protection, fuel cell, reduction of hazardous substances in tobacco, air- purification for respiratory, CO gas sensors and closed-cycle CO%_2 lasers. Up to now, catalysts for CO oxidation consist mainly of metal oxides with variable oxidation states and supported noble metals (such as Pd, Pt, Au, etc.) on reducible oxides or on inert oxides. However, catalyst based on NaZSM-5 zeolite for CO oxidation is less studied. We have reported the results of CO oxidation using Pd/NaZSM-5 and Pd-Ce/NaZSM-5 supported catalysts and found that they are good for the CO oxidation. In this paper, the results of CO oxidation over Fe_2O_3-modified Pd-Fe bimetallic supported catalysts based on NaZSM-5 prepared by impregnation method have been reported. It is found that the addition of Fe_2O_3 to the catalyst can enhance its activity remarkably.收起
