Particle growth during the polymerization of olefins on supported catalysts. Part 2: current experimental understanding and modeling progresses on particle …

A Alizadeh, TFL McKenna - Macromolecular Reaction …, 2018 - Wiley Online Library
The morphology of the growing polymer particles is important in olefin polymerisation on
supported catalysts. It has a significant impact on the rate of mass and energy transport, and …

Slurry-phase ethylene polymerization processes: a review on multiscale modeling and simulations

AK Thakur, SK Gupta, P Chaudhari - Reviews in Chemical …, 2022 - degruyter.com
Slurry polymerization processes using Zeigler–Natta catalysts, are most widely used for the
production of polyethylene due to their several advantages over other processes. Significant …

Heterogeneous catalysts for olefin polymerization: Mathematical model for catalyst particle fragmentation

AG Fisch, JHZ dos Santos, AR Secchi… - Industrial & …, 2015 - ACS Publications
A model for studying the catalyst fragmentation in the early stages of olefin polymerization is
presented. The model is based on measurable and observable parameters of the catalyst …

A comprehensive model for the micro and meso-scale level olefin polymerization: Framework and predictions

S Kulkarni, V Mishra, NM Bontu - Iranian Polymer Journal, 2019 - Springer
A fundamental understanding of the heterogeneous olefin polymerization process is critical
for imparting desired properties to the final polymer product. In this work, we have developed …

A combined experimental and molecular simulation study on stress generation phenomena during the Ziegler–Natta polyethylene catalyst fragmentation process

A De Nicola, V Touloupidis, V Kanellopoulos… - Nanoscale …, 2022 - pubs.rsc.org
The morphology of particles obtained under different pre-polymerization conditions has
been connected to the stress generation mechanism at the polymer/catalyst interface. A …

Effect of fragment size distribution on reaction rate and molecular weight distribution in heterogeneous olefin polymerization

M Nouri, M Parvazinia, H Arabi - Iranian Polymer Journal, 2015 - Springer
A one-dimensional polymeric flow model is used to study the effect of particle fragment size
and size distribution on molecular weight distribution and particularly on reaction yield in …

Experimental evaluation of a catalyst fragmentation model for olefin polymerization

B Dos Santos Boll, CP Dutra… - Macromolecular …, 2020 - Wiley Online Library
Fragmentation of supported catalysts plays an important role on olefin polymerization, which
has motivated several studies on this topic in recent years. This work aims to obtain …

[PDF][PDF] Mathematical modeling of the effect of catalyst initial shape and the crack pattern in olefin copolymerization

M Nouri, M Parvazinia, H ARABI, M Najafi - 2015 - sid.ir
Abstract Atwo-dimensional (2D) SINGLE PARTICLE model for the COPOLYMERIZATION of
propylene-ethylene with heterogeneous Ziegler-Natta catalyst is developed. The model …

[PDF][PDF] Modeling and multi-objective optimization of an industrial high density polyethylene slurry reactor

AK Thakur - 2021 - dr.ddn.upes.ac.in
Chemical Engineering Page 1 MODELING AND MULTI-OBJECTIVE OPTIMIZATION OF AN
INDUSTRIAL HIGH DENSITY POLYETHYLENE SLURRY REACTOR A thesis submitted to the …

[PDF][PDF] Estudo experimental da fragmentação de catalisadores suportados para polimerização de olefinas

BS Boll - 2020 - lume.ufrgs.br
A fragmentação de catalisadores suportados na polimerização de olefinas tem um papel
importante na taxa de reação, na definição da morfologia do polímero formado e na …