【摘要】 对环戊二烯在非晶态NiP/SiO2 催化剂上选择加氢生成环戊烯的反应进行了积分动力学研究 ,结果表明该反应机理较符合Rideal Eley模型 :由吸附态的氢直接和气相中的烯烃发生反应 .环戊二烯加氢生成环戊烯和环戊烯加氢生成环戊烷的活化能分别为 5 7.1kJ·mol-1和 6 0 .2kJ·mol-1.由于吸附态的氢和气相中环戊二烯的有效碰撞频率较高 ,所以环戊二烯的加氢几率比环戊烯的加氢几率大 ,显示出较好的选择性更多还原

【Abstract】 The integral kinetics of the selective hydrogenation of cyclopentadiene to cyclopentene over an amorphous NiP/SiO 2 catalyst was investigated.The results show that the reaction mechanism is in accord with the Rideal Eley model,the adsorbed hydrogen reacts directly with the gasous olefins.The apparent activity energies were determined as 57.1 kJ·mol -1 for cyclopentadiene to cyclopentene and 60.2 kJ·mol -1 for cyclopentene to cyclopentane.Owing to the bigger effective collision frequency between gaseous cyclopentadiene and adsorbed hydrogen,the hydrogenation probability of cyclopentadiene is bigger than that of cyclopentene,showing a fairly good selectivity.更多还原