《烯烃聚合催化剂的应用研究》-毕业论文.doc

精品 精品 专科生毕业设计（论文） 题 目： 烯烃聚合催化剂的应用研究 学生姓名： 系 别： 化学化工系 专业年级： 指导教师： 2012年6月20日 摘要 烯烃聚合催化剂的共同的特点都是使用过渡金属，在中压，低压下进行烯烃的高聚合反应的差异性比较。近几十年来聚合催化剂技术进展很大，这是由于过渡金属催化：化学的发展所致。齐格勒(Ziegler)催化剂，非利普斯(llhilliiS)催化剂以及美孚(Standard)催化剂几乎是在同一时期，内出现的。并且齐格勒Czicgler)催化剂又成为络合催化剂发展的开端，促使定向聚合和选择性低聚舍得以迅速发展。聚合催化剂种类多面且范围广泛，下面仅对烯烃聚合催化剂加以论述。聚烯烃工业技术进展很大程度上得益于催化剂的进步，世界大约3/4的线性聚乙烯是用钛基齐格勒-纳塔催化剂生产的，其余的份额主要是铬基催化剂。20世纪90年代初推出的茂金属催化剂将带来聚合工业的重大变革。文章概述了齐格勒-纳塔催化剂、铬基催化剂和茂等单中心催化剂的应用现状和发展趋势，概述了国产化聚乙烯和聚丙烯催化剂的研发和应用现状，指出聚烯烃催化剂仍将是今后我国石油化工的研发重点。 关键词：催化剂；茂金属；聚乙烯 ABSTRACT Olefin polymerization catalysts are the common characteristics of transition metals used in medium voltage and low voltage under high olefin polymerization of the differences between. Polymerization catalyst technology in recent decades, great progress, which is due to transition metal catalysis: chemistry due to the development. Ziegler (Ziegler) catalyst, non-Phillips (llhilliiS) catalyst and Mobil (Standard) catalyst is almost the same period, appeared in the. And Ziegler Czicgler) catalyst has become the beginning of the development of complex catalysts promote selective oligo-directed polymerization and are willing to develop rapidly. Polymerization catalyst and a wide range of types of multi-faceted, following only the olefin polymerization catalyst to be addressed. Largely due to industrial polyolefin catalyst technology advances the progress of the world about 3 / 4 of a linear polyethylene with titanium Jiqigele - Natta catalysts, and the remaining share is mainly chromium-based catalysts. Launched in early 1990s metallocene polymerization catalysts will bring major changes in industry. Article outlines the Ziegler - Natta catalysts, chromium-based catalysts such as single-site catalysts and Mao application status and development trends, an overview of the localization of polyethylene and polypropylene catalyst research and development and applic