茂钛络合物-纳米NaH体系催化苯乙烯氢化

Catalytic Hydrogenation of Styrene by a Series of Titanocene Complexes with Nanometric NaH

茂钛络合物，以纳米ＮａＨ为助催化剂催化苯乙烯氢化，初速率为３．７×１０３～８．３×１０３ｍｏｌ／（ｍｏｌ·ｍｉｎ）（Ｈ２／Ｔｉ），催化效率为６．４×１０３～１８．５×１０３ｍｏｌ／ｍｏｌ（Ｈ２／Ｔｉ），均高于文献报道的其他茂钛催化体系。考察了不同温度对催化反应的影响，反应温度在２７５～３１５Ｋ时，活化能为２０．３ｋＪ／ｍｏｌ，与催化体系活性高一致。

Hydrogenation of styrene was studied by a series of titanocene complexes with nanometric NaH as coca Lalyst.Their initial rates range from 3.7×10 3 to 8.3×10 3 mol/mol·min (H 2/Ti)and catalytic efficiencies range from 6.4×10 3 to 18.5×10 3 mol/mol (H 2/Ti).All of them are higher than those of other titanocene systems reported in literature.Effect of different temperature on the catalytic hydrogenation had been investigated.From which, activation energy was calculated as 20.3kJ/mol,which was small, and in consistent with high activities of this system.