新型MgCl_2/SiO_2复合载体丙烯聚合催化剂的研究  

Novel MgCl_2/SiO_2 complex support catalyst for propylene polymerization

作　　者：祖小京[1] 林舸[1] 陈伟[2] 姜涛[3] 

机构地区：[1]中国科学院广州地球化学研究所,广东广州510640 [2]中国石油化工股份有限公司北京化工研究院,北京100013 [3]大庆石油学院化学化工学院,黑龙江大庆163318

出　　处：《化工进展》2006年第12期1439-1442,共4页Chemical Industry and Engineering Progress

基　　金：国家科技部"863"计划资助项目(2002AA333060)

摘　　要：采用喷雾干燥法制备了MgCl2/SiO2球形复合载体,经载钛处理后得到丙烯聚合催化剂。利用SEM、XRD、XPS、EDX等分析了催化剂的形态和物性,并进行了丙烯本体聚合研究。结果表明:负载TiCl4后制备出的球形丙烯聚合催化剂中,Ti/Mg活性组分均匀负载于SiO2堆成的微球中,催化剂保持了良好的颗粒形态。该催化剂用于丙烯聚合,具有催化活性高、立体定向性好、氢调敏感性好等特点。The MgCl2/SiO2 complex support was prepared by spray drying using alcoholic suspension containing MgCl2 and SiO2. The complex support reacted with TiCl4 and all-n-butyl phthalate to prepare the catalyst for propylene polymerization. The catalyst was characterized with SEM, XRD, XPS and EDX. The analysis results showed that SiO2 functioned as an inert support and there was no chemical reaction between silica and magnesium or titanium. The performance of the catalyst for polymerization of propylene was investigated. The results showed that the catalyst had high activity, high stereo-specificity and sensitive hydrogen response.

关 键 词：MgCl2/SiO2复合载体 丙烯聚合 ZIEGLER-NATTA催化剂 喷雾干燥 

分 类 号：TQ052[化学工程]