新型TiCl_4/MgCl_2高效聚丙烯催化剂的制备及其结构表征  

Preparation and Characterization of Novel Efficient TiCl_4/MgCl_2 Catalyst for Propylene Polymerization

作　　者：费建奇[1] 李刚[1] 荣峻峰[1] 忻海[1] 周旭华[1] 景振华[1] 

机构地区：[1]中国石化石油化工科学研究院石油化工催化材料与反应工程国家重点实验室,北京100083

出　　处：《石油化工》2008年第5期465-469,共5页Petrochemical Technology

摘　　要：在卤代烷溶剂中,用镁粉与醇反应制备了可溶性含镁配合物溶液,再从溶剂中析出溶质作为合成催化剂的载体,以TiCl4为活性化合物,制备了新型TiCl4/MgCl2高效聚丙烯催化剂。采用元素分析、傅里叶变换红外光谱、X射线衍射、扫描电子显微镜、BET法对载体和催化剂的组成、晶体结构及形貌特征进行了分析表征。表征结果显示,载体的化学结构为ClMg(RO)·ROH;在载钛过程中发生烷氧基镁向氯化镁结构转变,催化剂的晶体结构呈现氯化镁晶体结构的特征。A novel supported catalyst TiCl4/MgCl2 with high activity for propylene polymerization was prepared from a novel complex containing magnesium, which was synthesized via reaction of power magnesium with ethanol and/or butylalcohol in CH2Cl2 solution. The composition, crystal structure and morphology were characterized by means of element analysis, FTIR, XRD, SEM and BET. Structure of novel support is ClMg（RO）. ROH, and structure of complex containing magnesium transforms to magnesium chloride during supporting process. The characteristics of crystalline magnesium chloride are presented in catalyst.

关 键 词：四氯化钛 氯化镁 载体 聚丙烯催化剂 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]