Catalyst for synthesizing polypropylene carbonate and application thereof

The invention provides a catalyst for synthesizing polypropylene carbonate and application thereof, the catalyst is a binary acid zinc manganese bimetallic catalyst, the molar ratio range of zinc to manganese is (10: 1)-(1: 1), preferably, the molar ratio of zinc to manganese is 5: 1, and the particle size of the catalyst is 10-50nm. The binary acid zinc-manganese bimetallic catalyst has the beneficial effects that the preparation steps are simple, the preparation conditions are mild, the cost is lower, and the industrial production is easy. The catalyst is used for catalytic production of poly (propylene carbonate), a polymerization kettle is adopted for reaction, the catalyst activity is high, and an obtained polymer is high in molecular weight and low in ether segment content. 本发明提供了一种用于合成聚碳酸亚丙酯的催化剂及其应用，所述催化剂是一种二元酸锌锰双金属催化剂，其中锌与锰的摩尔比范围为(10:1)-(1:1)，优选的，所述锌与锰的摩尔比为5:1，所述催化剂的粒径为10-50nm。本发明有益效果：本发明所述的二元酸锌锰双金属催化剂，制备步骤简单，制备条件温和，成本较低，易于工业化生产。该催化剂用于催化生产聚碳酸亚丙酯，采用聚合釜进行反应，催化剂活性较高，所得聚合物分子量较高，醚段含量较低。