Preparation of Titanium-based Polyoxometalatxiue-ionic Liquid Catalysts and Application in the Synthesis of Degradable Polyester

作     者：Ran CHEN Changyuan YU Liying GUO Kun LIU Xiudan ZHAO Zezhong JIANG 

作者机构：College of Life Science and TechnologyBeijing University of Chemical TechnologyBeijing 100029China School of Petrochemical EngineeringShenyang University of TechnologyLiaoyang 111003China Petroleum Plant of Fushun Petrochemical Company of Petro ChinaFushun 113004China 

出 版 物：《Meteorological and Environmental Research》 (气象与环境研究（英文版）)

年 卷 期：2022年第13卷第4期

页      面：135-139页

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Supported by the Key Project of Education Department of Liaoning Province(LZGD2020005) 

主　　题：Polyoxometalate-ionic liquid Synergistic catalysis Coupling reaction Degradable polyester 

摘      要：Three kinds of Keggin-type titanium-based polyoxometalate-ionic liquid catalysts were prepared,and the chemical structure,crystal structure and thermal stability of the three catalysts were analyzed and tested by infrared spectrometer,ultraviolet-visible spectrometer,X-ray diffractometer,and thermogravimetric analyzer,***,their performance in catalyzing the coupling reaction of ethylene carbonate(EC)and dimethyl succinate(DMSu)to synthesize polyethylene succinate(PES)was studied,and the effects of different metals on the catalytic performance and the mechanism of action were *** optimal process parameters for the coupling reaction were ***,the chemical structure of PES was characterized by infrared *** results show that under the same process parameters,the polyoxometalate-ionic liquid catalyst Bmim_(5)[Ti(H_(2)O)TiMo_(11)O_(39)]had the best catalytic *** the optimal process parameters,Bmim_(5)[Ti(H_(2)O)TiMo_(11)O_(39)]had obvious inhibitory effect on side reactions,and the yield and selectivity of PES prepolymer were up to 72.23%and 88.64%.