丙醛均相催化加氢制丙醇的研究  

Study of Homogeneous Catalytic Hydrogenation of Propionaldehyde to Propanol

作　　者：赵转云[1] 杨晶沐[1] 郭秋玲[1] 王欣玫[1] 刘省明[1] 殷元骐[1] 

机构地区：[1]中国科学院兰州化学物理研究所

出　　处：《分子催化》1998年第2期133-136,共4页Journal of Molecular Catalysis(China)

摘　　要：系统地研究了在４．０ＭＰａ氢压下，反应温度、催化剂浓度、溶剂等对丙醛均相加氢制正丙醇反应的影响，得出最佳反应条件为：氢压４．０ＭＰａ、温度８０℃，ＲｕＣｌ３·３Ｈ２Ｏ为催化剂前体，用量９８ｍｇ（０．３５ｍｍｏｌ），ＰＰｈ３为３９３ｍｇ（１．５ｍｍｏｌ），Ｒｕ／Ｐ摩尔比为１／４，ＤＭＦ为溶剂．在此条件下，丙醛转化率和正丙醇选择性可分别达９９％和９５％以上．求出了不同反应温度下的反应速度常数．以ＲｕＣｌ３－ＰＰｈ３为催化剂体系，丙醛加氢的活化能为７７．n this paper, effects of the reaction time, the concentration of catalyst and the solvent on the hydrogenation of propionaldehyde were investigated at the pressure of 4.0 MPa of hydrogen. The best reaction conditions are as follows: pH2=4.0 MPa, T=80℃, 0.35 mmol of RuCl_3·3H_2O and 1.5 mmol of PPh3, molar ratio of Ru/P should be ～1/4 and DMF as solvent. The conversion of propionaldehyde and the selectivity to propanol are above 99% and 95% respectively. The rate constants at different temperatures are calculated. The activation energy of this reaction is ca. 77.62 kJ/mol.

关 键 词：丙醛 正丙醇 加氢 钌 催化剂 制备 丙醇 

分 类 号：TQ223.123[化学工程—有机化工]