BaK/γ-Al_2O_3固体碱催化合成聚甘油的研究  

Study on the Synthesis of Polyglycerol Catalyzed by BaK/γ-Al_2O_3 Solid Base

作　　者：张星星[1] 胡志雄[1,2] 张旭冬[1] 余小波[1] 许春芳[1] 张维农[1,2] 齐玉堂[1] 

机构地区：[1]武汉轻工大学食品科学与工程学院,武汉430023 [2]农产品加工湖北省协同创新中心,武汉430023

出　　处：《山东化工》2015年第14期20-22,24,共4页Shandong Chemical Industry

基　　金：国家自然科学基金项目(31371783);国家局粮食公益性行业科研专项(2013007);武汉轻工大学研究生创新计划项目(2014cx16)

摘　　要：以γ-Al2O3为载体,采用溶胶凝胶法,合成了Ba K/γ-Al2O3型固体碱催化剂,通过扫描电镜（SEM）、Brunauer-EmmerttTeller（BET）比表面测试以及碱强度与碱量测定等方法对催化剂的结构与性能进行表征;将其应用于聚甘油的合成中,并对催化效果进行了评价。结果表明,该催化剂具有较好的孔道结构,碱性在11.1~15.0之间,属于固体强碱类。该催化剂对甘油法聚合反应制备聚甘油表现出良好的催化性能,反应较温和,产物色泽浅,聚合度适中,具有较高研究意义与应用潜力。In this paper, BaK/γ-Al2O3 solid base catalyst was synthesized by using γ-Al2O3 as carrier through solgel process. Its structure and properties were characterized by SEM, Brunauer - Emmertt - Teller（BET） specific surface area and the determination of base strength and alkali content; its catalytic effect was also evaluated according to the synthesis of polyglycerol. The results showed that this catalyst belongs to solid strong base which has a preferable pore structure and alkalinity value between 11.1 and 15.0. The catalyst shows good catalytic performance for the polymerization of glycerol, and can provide many advantages such as mild reaction condition, light color product and moderate polymerization degree, which thus indicates it has high research significance and good application potential.

关 键 词：聚甘油 合成 BA K/γ-Al2O3 固体碱 

分 类 号：TQ645.5[化学工程—精细化工]