Disclosed is a preparation method of titanium catalyst for olefin polymerization, the method comprising (1) preparing magnesium compound solution by resolving non-deoxidative magnesium halide and IIIA group atom compound in a solvent mixture of cyclic ether, at least one alcohol, phosphorus compound and organosilane with or without hydrocarbon solvent; (2) reacting said magnesium compound solution with titanium compound, silicon compound, tin compound or mixture thereof to produce a support; and (3) reacting said support with titanium compound and electron donor to produce solid complex titanium catalyst, wherein the particle size and particle size distribution f said catalyst are regulated by controlling solubility of the reactants in said steps (2) and/or (3).
本发明公开了一种用于烯烃聚合的
钛催化剂的制备方法,该方法包括:(1)通过在
环醚、至少一种醇、
磷化合物和有机
硅烷的混合溶剂中溶解非氧化性卤化
镁和IIIA基团原子化合物来制备
镁化合物溶液,可以使用或不使用烃溶剂;(2) 将所述
镁化合物溶液与
钛化合物、
硅化合物、
锡化合物或其混合物反应,生成载体;以及 (3) 将所述载体与
钛化合物和电子供体反应,生成固体复合
钛催化剂,其中所述催化剂的粒度和粒度分布可通过控制所述步骤(2)和/或(3)中反应物的溶解度来调节。