【摘要】 用化学沉积法制备了非晶态催化剂Ni-P-SiO₂,测定了该催化剂对苯乙烯加氢的活性,并与相应的晶态Ni-P-SiO₂及Ni-SiO₂的活性作对比.结果表明,还原态的Ni是反应的活性中心.用高真空TPD-MS研究了该催化剂对氢、一氧化碳的吸附,提出了一氧化碳加氢的反应机理.更多还原

【Abstract】 Amorphous Ni-P-SiO₂ was prepared by chemical deposition. The catalytic activity of amorphous Ni-P-SiO₂ for the hydrogenation of styrene was tested and compared with crystallized Ni-P-SiO₂ and Ni-SiO₂ catalysts. The catalytic activity results were compared with the results of XPS and TPR, and the reduced state of nickel was recognized as the active site. The chemisorption of H₂, CO and their interaction on the catalysts were examined in a high vacuum TPD-MS system, and the mechanism of hydrogenation of CO was proposed.更多还原