Environmental Benign Catalysis Process "Development of Catalysts for the Preparation of Cyclic Amine"

研究了1，4-丁二醇与氨在酸性催化剂上的胺化反应。在本研究中所测试的固体酸催化剂中，通过水热合成法制备的质子型BETA沸石（H-BETA）具有更高的催化四氢呋喃合成吡咯烷的活性。在酸性催化剂上，研究了1，4-丁二醇分子间脱水制四氢呋喃的反应，结果表明，传统的γ-Al 2 O3催化剂具有较高的活性和选择性。红外光谱数据表明，随着刘易斯酸用量的增加，四氢呋喃胺化反应的活性和选择性均提高。沿着对吡咯烷、吡啶、氨、乙醇胺、乙二胺等的吸附研究，还对沸石材料酸性OH带的不均一性进行了研究。

The amination reactions of pyrrolidine from 1,4-butanediol with ammonia over acidic type of catalysts were investigated. Among the solid acid catalyst tested in this study, the protonic form of BETA zeolite (H-BEA) which was prepared by hydrothermal synthesis showed much higher catalytic activity from tetrahydrofuran to pyrrolidine. Intermolecular dehydration from 1,4-butanediol to tetrahydrofuran were also investigated over acidic type of catalyst, the conventional γ-alumina showed higher activity and selectivity for this first step of reaction. IR spectroscopic data provided evidence that the increase Lewis acid amount raised the activity and selectivity for the amination of tetrahydrofuran to pyrrolidine. Along with studies of adsorption of pyrrolidine, pyridine, ammonia, athanol amine, ethylene diamine, the heterogeneity of the acidic OH band of zeolite materials was also studied.