Analysis of Slurry-Phase Co-Polymerization of Ethylene and 1-Butene by Ziegler-Natta Catalysts Part 1: Experimental Activity Profiles

被引：6
|
作者：
McCoy, John T. [1 ]
Soares, Joao B. P. [2 ]
Rawatlal, Randhir [1 ]
机构：
[1] Univ Cape Town, Dept Chem Engn, ZA-7701 Cape Town, South Africa
[2] Univ Waterloo, Polymer Res Inst, Dept Chem Engn, Waterloo, ON N2L 3G, Canada
来源：
MACROMOLECULAR REACTION ENGINEERING | 2013年 / 7卷 / 08期
基金：
新加坡国家研究基金会;
关键词：
computer modeling; kinetics (polym.); parameter regression; polyethylene (PE); Ziegler-Natta polymerization; RESIDENCE-TIME DISTRIBUTION; HETEROGENEOUS OLEFIN POLYMERIZATION; TITANIUM OXIDATION-STATES; SIZE DISTRIBUTION; DYNAMIC EVOLUTION; PARTICULATE PROCESSES; PARAMETER-ESTIMATION; MOLECULAR-WEIGHT; MULTISTAGE POLYMERIZATION; PROPYLENE POLYMERIZATION;
D O I：
10.1002/mren.201200078
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A rigorous method is developed to extract kinetic parameters describing catalyst activity from experimental polymerization rate profiles for Ziegler-Natta catalysts. The kinetic scheme used correlates the oxidation state with catalyst activity, eliminating the need for multiple site types to describe rate profiles. The method is applied to data from kinetic experiments performed in a lab-scale semi-batch reactor. Four parameters are required to describe the activity of the catalyst: the polymerization rate constant and three site transformation rate constants. The model is able to reproduce changes in the rate profiles in response to reactant concentrations. The fits of the model to the data are comparable to those in similar studies.
引用
收藏
页码：350 / 361
页数：12
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