文献类型：期刊文献

英文题名：Estimation of Apparent Kinetic Constants of Individual Site Types for the Polymerization of Ethylene and α-olefins with Ziegler-Natta Catalysts

作者：Chen, Keran[1,2];Mehdiabadi, Saeid[1];Liu, Boping[2];Soares, Joao B. P.[1]

机构：[1]Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2016

卷号：10

期号：6

起止页码：551

外文期刊名：MACROMOLECULAR REACTION ENGINEERING

收录：;EI(收录号：20162302475606);WOS:【SCI-EXPANDED(收录号:WOS:000393060100003)】；

基金：The authors thank the Chinese Scholarship Council, the National Natural Science Foundation of China (Grant No. 21406061), and the Natural Sciences and Engineering Research Council of Canada (NSERC) for their financial support.

语种：英文

外文关键词：polyethylene; polymer reaction engineering; polymerization modelling; MWD deconvolution; Ziegler-Natta

摘要：This article proposes a method to quantify the polymerization kinetics of ethylene and alpha-olefins with commercial TiCl4/MgCl2 Ziegler-Natta catalysts. The method determines the leading apparent polymerization kinetic constants for each active site in a Ziegler-Natta catalyst by simultaneously fitting the instantaneous polymerization rate, cumulative polymer yield, and polymer molecular weight distribution measured at different times during a series of semi-batch polymerization experiments. This approach quantifies the behavior of olefin polymerization with multisite catalysts using the least number of adjustable parameters needed to consistently model polymerization kinetics and polymer microstructural data.