Investigation of CO Oxidation over Pd/NaZSM-5 Supported Catalyst Modified by Fe

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作者单位: 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)

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

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