改性戊二酸锌催化剂催化合成二氧化碳基聚碳酸亚丙酯研究

Study on Catalytic Synthesis of Carbon Dioxide-based Poly(Propylene Carbonate)over Modified Zinc Glutarate Catalysts

以非离子表面活性剂聚环氧丙烷醚二醇对戊二酸锌催化剂的合成进行优化改性,改性后得到的戊二酸锌催化剂中各元素比例更接近理论值,其中锌元素占比为32.2%。与未进行改性的戊二酸锌催化剂相比,改性后的催化剂的比表面积可达21 m^(2)/g,在聚合反应中的催化活性可达47.4 g聚合物/g催化剂,活性约为未改性催化剂活性的9倍左右。该方法提升了戊二酸锌催化剂在二氧化碳基聚碳酸亚丙酯合成中的应用价值。

The synthesis of zinc glutarate catalysts was optimized with the nonionic surfactant poly(epoxypropylene ether diol),and the proportion of each element in the modified zinc glutarate catalysts was closer to the theoretical value,with the proportion of zinc being 32.2%.Compared with the unmodified zinc glutarate catalyst,the specific surface area of the modified catalyst was up to 21 m^(2)/g,and the catalytic activity in the polymerization reaction was up to 47.4 g polymer/g catalyst,which was about 9 times of the activity of the unmodified catalyst.This method enhanced the application value of zinc glutarate catalysts in the synthesis of carbon dioxide-based poly(propylene carbonate).