文献类型：期刊文献

中文题名：Gas phase ethylene polymerization over SiO_(2)-supported organosilyl chromate UCC S-2 catalyst using a high-speed stirred-autoclave reactor

作者：Liuzhong LI[1,3];Aiyou HAO[1];Ruihua CHENG[2];Boping LIU[2]

机构：[1]School of Chemistry and Chemical Engineering,Shandong University,Jinan 250100,China;[2]State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;[3]Research Institute of Qilu Branch Co.,SINOPEC,Zibo 255400,China

年份：2011

卷号：5

期号：1

起止页码：89

中文期刊名：Frontiers of Chemical Science and Engineering

外文期刊名：化学科学与工程前沿（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2011_2012】；PubMed;

基金：The authors were grateful to the Key Projects in the National Science&Technology Pillar Program during the 11th Five-Year Plan Period(2007BAE50B04);Qilu Branch Co.,SINOPEC for the financial support.

语种：英文

中文关键词：UCC S-2 catalyst;Al-alkyl co-catalyst;gasphase ethylene polymerization;high density polyethylene

摘要：Although an important industrial catalyst for producing high density polyethylene,the SiO_(2)-supported organosilyl chromate UCC S-2 catalyst has not been fully investigated compared with the SiO_(2)-supported oxo chromium Phillips catalyst.In this work,gas phase ethylene polymerization by S-2 catalysts(Cat-1,Cat-2,and Cat-3)was carried out in a high-speed stirredautoclave reactor.The effects of temperature,time,and pressure on kinetics,activity,and product properties were studied.All kinetics were typical built-up types with slow decay.Compared to the simple physical mixtures of Cat-1 and Cat-2,Cat-3 showed higher activity and its product had a broader molecular weight distribution,indicating new active species induced during blending of Cat-1 and Cat-2 in n-hexane.The innovation by a simple catalyst technology created a new application to meet market demands.