1,4-丁二醇脱氢合成γ-丁内酯催化剂研究

Study on the Preparation of γ-Butyrolactone Catalyst by Dehydrogenation of 1,4-Butanediol

以Cu、Zn、Al等金属离子的硝酸盐为原料，以共沉淀方式制备CuO／ZnO／Al2O3催化剂，在常压下考察该催化剂对1，4-丁二醇脱氢制备γ-丁内酯的活性效果。温度在250-260℃，液时空速2．0h^-1，氢醇比在4．5～5．5范围内，γ-丁内酯的收率在92％以上。在适宜的条件下，该催化剂具有较好的活性和操作灵活性。

CuO/ZnO/AlO3 catalyst is prepared by co -precipitation method, with Cu, Zn, Al nitrates as raw materials. The activity of the catalyst on the preparation of γ- butyrolactone by dehydrogenation of 1,4 - butanediol in the atmosphere is reviewed. With reaction temperature 250 - 260℃, liquid hourly space velocity 2.0 h^-1, the mole ratio of hydrogen and alcohol 4.5 - 5.5, the yield of γ-butyrolactone can be up to 92%. In appropriate circumstances, catalyst has good activity and an operating flexibility.