BiMo基复合氧化物催化剂丙烷直接氧化至丙烯醛研究  

Direct Oxidation of Propane to Acrolein over BiMo Based Catalysts

作　　者：吴俊明 杨汉培 范以宁[2] 许波连[2] 陈懿[2] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,河海大学环境科学与工程学院,"浅水湖泊综合治理与资源开发"教育部重点实验室,南京210098 [2]南京大学化学化工学院,介观化学教育部重点实验室,南京210093

出　　处：《无机化学学报》2007年第8期1469-1476,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家重点基础研究发展规划(No.2005CB221408)资助项目。

摘　　要：The effects of the available zoon above the catalyst bed on the performance of the catalyst were investigated. It has been suggested that propylene is an intermediate species in the reaction of propane to acrolein,and a two-step reaction scheme is proposed,the first step is oxidative dehydrogenation of propane to propylene in the gas phase then followed by the second step,the selective oxidation of propylene to acrolein on the surface of the catalyst. The performance of the catalyst depends on both the oxidative dehydrogenation of propane to propylene in the gas phase and the selective oxidation of propylene to acrolein on the catalyst surface. The thermal cracking,homogeneous oxidative dehydrogenation and heterogeneous catalytic dehydrogenation of propane as well as the selective catalytic oxidation of propane to acrolein over BiMoO based mixed oxides catalysts were studied. Under the optimum reaction conditions of propane dehydrogenation and selective oxidation of propylene,the selectivity and the yield of acrolein approached to 45mol% and 14mol%,respectively under about 30mol% propane conversion.The effects of the available zoon above the catalyst bed on the performance of the catalyst were investigated. It has been suggested that propylene is an intermediate species in the reaction of propane to acrolein,and a two-step reaction scheme is proposed,the first step is oxidative dehydrogenation of propane to propylene in the gas phase then followed by the second step,the selective oxidation of propylene to acrolein on the surface of the catalyst. The performance of the catalyst depends on both the oxidative dehydrogenation of propane to propylene in the gas phase and the selective oxidation of propylene to acrolein on the catalyst surface. The thermal cracking,homogeneous oxidative dehydrogenation and heterogeneous catalytic dehydrogenation of propane as well as the selective catalytic oxidation of propane to acrolein over BiMoO based mixed oxides catalysts were studied. Under the optimum reaction conditions of propane dehydrogenation and selective oxidation of propylene,the selectivity and the yield of acrolein approached to 45mol% and 14mol%,respectively under about 30mol% propane conversion.

关 键 词：丙烷脱氢 BiMo基复合氧化物 选择氧化 丙烯醛 

分 类 号：O614.611[理学—无机化学] O643[理学—化学]