甲烷部分氧化制合成气Ni/MgO和Ni-MgO/MgO催化剂的研究

甲烷氧化偶联制乙烷、乙烯以及甲烷选择氧化制甲醇、甲醛等反应 ,因其转化率和收率低 ,故短期内无法实现工业化 .目前 ,工业上应用甲烷蒸汽转化制合成气 ,进而合成氨等化工产品 .甲烷蒸汽转化制的合成气 ,其 H2 /CO≥ 3,不适用于甲醇合成和 F- T合成 .而甲烷部分氧化制的合成气 ,其H2 /CO≤ 2 ,因而最适合用于甲醇合成和 F- T合成 ,故近 1 0年来倍受科学家的关注1 ,2 ] .在 CH4部分氧化制合成气中 ,钌、铑、钯、铂等贵金属催化剂的活性高、选择性好、稳定性好1 ] ,但价格昂贵 (负载量以 1 2 %～ 4 0 %为佳 ) ,因而难以实现商品化 .N…

Partial Oxidation of Methane to Synthesis Gas over Ni/MgO and Ni-MgO/MgO Catalysts

Ni/MgO and Ni MgO/MgO catalysts for partial oxidation of methane to syngas were prepared by ordinary impregnation method and impregnation promoted by supported salt. The catalytic performance were characterized by TPR, TPO, TPMC (Temperature Programmed Methane decomposition Carbon deposition) and activity examination techniques. The results showed that Ni MgO interaction of the promoted catalyst is stronger than that of the common one, and the resisting carbon deposition ability of the promoted catalyst is increased. Therefore the activity and selectivity of the promoted catalyst are enhanced.