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Effect of Cu promoter on Ni-based SBA-15 catalysts for partial oxidation of methane to syngas

查看全文 作　　者：Fabien [1]Habimana;Xiujin [2]Li;Shengfu [1]Ji;Bao [1]Lang;Daoan [1]Sun;Chengyue [1]Li 高影响力作者 机构地区：[1]State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;[2]Department of Environmental Engineering, Beijing University of Chemical Technology, Beijing 100029, China高影响力机构 出　　处：《Journal of Natural Gas Chemistry》索引2009年第18卷第4期,共7页高影响力期刊 基　　金：supported by the National Basic Research Program of China (Project No. 2005CB221405);the National '863' Project of China (No.2006AA10Z425) 摘　　要：A series of Ni/SBA-15 catalysts with 5wt% to 15wt% Ni content as well as a series of 12.5%Ni/Cu/SBA-15 catalysts with 1% to 10% copper content were prepared by the impregnation method. The catalytic performance for partial oxidation of methane was investigated in a continuous flow microreactor under atmospheric pressure. The textural and chemical properties of the catalysts were characterized by XRD,TEM,BET and H 2-TPR techniques. The results indicated that the catalysts modified with Cu promoter showed better performance than those without modification. For the 12.5%Ni/2.5%/Cu/SBA-15 catalyst,at 850 C the conversion of CH 4 reached 97.9% and the selectivity of CO and H 2 reached 98.0% and 96.0%,respectively. In XRD patterns of the Ni/Cu/SBA-15 catalyst with 7.5 to 10% Cu contents there were CuO characteristic peaks beside NiO characteristic peaks. The mesoporous structure of SBA-15 was retained in all of the catalysts. TPR analysis of the catalysts revealed that a strong interaction between Ni,Cu promoter and SBA-15 support may be existed. This interaction enhanced significantly the redox properties of the catalysts resulting in the higher catalytic activity. 关 键 词：氧化铜催化剂 甲烷部分氧化 SBA 铜镍 促进剂 合成气 催化性能 XRD图
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