甲烷催化部分氧化制取合成气的研究Ⅱ．添加贵金属Pt的Ni／Al_2O_3催化剂的研究

采用固定床流动反应装置研究了添加贵金属Ｐｔ的Ｎｉ／α－Ａｌ２Ｏ３催化剂对甲烷部分氧化制取合成气的催化活性；考察了不同Ｐｔ添加量、ＣＨ４／Ｏ２配比、反应温度、空速等因素对催化剂性能的影响。结果表明，Ｎｉ／Ａｌ２Ｏ３添加Ｐｔ后其活性和ＣＯ及Ｈ２的选择性明显提高

Studies of catalytic partial oxidation of methane to synthesis gas Ⅱ. Studies of Pt doped Ni/Al 2O 3 catalysts

The activity of Pt doped Ni/Al 2O 3 catalysts for direct oxidation of methane to synthesis gas has been studied by using a fixed bed flow reactor. It is found by examining the effects of doped amount of Pt, CH 4/O 2 ratios, reaction temperature, flow rate on catalytic property that the activity and selectivities for CO and H 2 of Pt doped Ni/Al 2O 3 are much better than Ni/Al 2O 3 catalyst, which did not deactivate during 100 hours on stream with the carbon space velocity of 1.5×10 5h -1 . The amount of carbon deposited on the catalyst is not evident, indicating that Ni/Al 2O 3 doped with Pt has high resistence to carbon deposition.