聚烯烃
聚合
单体
化学
烯烃聚合
动力学
高分子化学
催化作用
扩散
热力学
聚合物
有机化学
物理
图层(电子)
量子力学
作者
M. Hamba,G. C. Han‐Adebekun,W. Harmon Ray
标识
DOI:10.1002/(sici)1099-0518(19970730)35:10<2075::aid-pola23>3.0.co;2-c
摘要
Monomer transport and polymerization kinetics are two key phenomena in olefin polymerization with heterogeneous transition metal catalysts. To have a better understanding of these interrelated kinetics and diffusion phenomena, a quantitative calculation of the monomer diffusion directly from experimental study is essential. In this work, a novel temperature-perturbation technique is developed to systematically study the kinetic and diffusion limitations in catalyzed gas phase olefin polymerization. A physical model of the particle growth mechanism as well as its mathematical representation is presented and the diffusion limitations occurring in the system at high temperature are characterized and quantitatively analyzed. Finally, the practical implications of the results of this study on the operation of industrial scale polyolefin reactors are examined. © 1997 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 35: 2075-2096, 1997
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