SO4^2-/γ-Al2O3催化胺化制备四氢吡咯及工艺研究  

Catalytic Ammoniation of Tetrahydrofuran to Pyrrolidine by SO4^2-/γ-Al2O3

作　　者：孙中华 查杰 钱俊峰[1] 孙富安[1] 何明阳[1] 陈群[1] SUN Zhonghua;ZHA Jie;QIAN Junfeng;SUN Fu’an;HE Mingyang;CHEN Qun(Jiangsu Key Laboratory of Fine Petrochemical Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学江苏省精细石油化工重点实验室,江苏常州213164

出　　处：《常州大学学报（自然科学版）》2020年第4期24-31,共8页Journal of Changzhou University：Natural Science Edition

基　　金：江苏省科技厅产学研前瞻项目(BY2016029-08)。

摘　　要：以SO4^2-/γ-Al2O3为催化剂,以四氢呋喃和氨气为原料,采用固定床连续催化胺化法制备四氢吡咯。通过前期对各种催化剂催化性能的考察,发现SO4^2-/γ-Al2O3催化剂具有更高的四氢吡咯选择性。研究了浸渍液种类,浸渍液浓度和焙烧温度等制备条件对催化性能的影响,同时优化了反应的工艺条件。实验结果表明,浸渍液选择浓度为0.2 mol/L的硫酸,焙烧温度和时间分别为500℃和4 h时催化性能最高。对工艺条件进行优化得出,在反应温度350℃、液时空速0.2 h^-1、氨气与四氢呋喃物质的量比为6∶1的条件下,四氢呋喃转化率为91.2%,四氢吡咯选择性为80.5%。通过对催化剂进行使用寿命实验,在150 h内可保持稳定的四氢吡咯收率。Tetrahydropyrrole was prepared by using SO4^2-/γ-Al2O3 as catalyst and tetrahydrofuran as raw material. Through the investigation of the catalytic properties of various solid acid catalysts, it has been found that higher tetrahydropyrrole selectivity can be obtained by using SO4^2-/γ-Al2O3 catalyst. Through the optimization of catalyst preparation conditions and reaction conditions, the results of the preparation conditions show that sulfuric acid concentration of 0.2 mol/L, calcined at 500 ℃ for 4 h. When the reaction temperature is 350 ℃, liquid hourly space velocity is 0.2 h^-1, n(NH3)∶n(THF) is 6∶1, the reaction conversion is 91.2% and the selectivity is 80.5%. Through the life test of the catalyst, a stable tetrahydropyrrole yield can be obtained within 150 h.

关 键 词：四氢呋喃 催化胺化 四氢吡咯 SO4^2-/γ-Al2O3 

分 类 号：TQ032.4[化学工程]