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采用红外光谱跟踪分析用于丙烯聚合的ＭｇＣｌ２负载型催化剂的制备过程，阐明了制备过程中的主要化学变化．认为载体ＭｇＣｌ２含水对催化剂负载过程及钛含量有极大的影响；ＭｇＣｌ２的溶解是一经过中间过渡态的醇化过程；邻苯二甲酸酐不仅会与部分醇反应生成酯，而且还与水反应生成酸，起了除水的作用；其中酯在ＴｉＣｌ４负载中作为内酯，酸容易与－Ｍｇ—（ＯＲ）作用生成Ｍｇ（ＯＨ）２或Ｍｇ（ＯＨ）Ｃｌ；在负载过程中，ＴｉＣｌ４倾向于在ＭｇＣｌ２表面的结构缺陷处与ＭｇＣｌ２发生“结构锚定”．用红外光谱跟踪分析的结论，得到了用不同含水量ＭｇＣｌ２制得的催化剂钛含量和催化活性及ＸＰＳ分析的支持
The preparation process of MgCl2 supported catalyst for propylene polymerization was analyzed by infrared spectroscopy, and the main chemical changes in the preparation process were elucidated. It is considered that the MgCl2 carrier water has a great influence on the catalyst loading process and the titanium content. The dissolution of MgCl2 is an alcoholysis process through intermediate transition state. Phthalic anhydride not only reacts with some alcohol to form esters, but also reacts with water to form The acid plays a role of removing water. Among them, ester acts as a lactone in the TiCl4 loading and the acid easily forms Mg (OH) 2 or Mg (OH) Cl by -Mg- (OR). During the loading process, TiCl4 tends to The “structural anchoring” occurs with MgCl2 at the structural defects on the MgCl2 surface. The results of FTIR trace analysis and the support of titanium content, catalytic activity and XPS analysis of catalysts prepared with different water content MgCl2