The concept of active site in heterogeneous catalysis

C Vogt, BM Weckhuysen - Nature Reviews Chemistry, 2022 - nature.com
Catalysis is at the core of chemistry and has been essential to make all the goods
surrounding us, including fuels, coatings, plastics and other functional materials. In the near …

Hydrodynamic modeling of liquid-solid flow in polyolefin slurry reactors using CFD techniques–A critical analysis

AK Thakur, R Kumar, N Banerjee, P Chaudhari… - Powder Technology, 2022 - Elsevier
This first-of-its-kind review discusses the hydrodynamics for polyolefin productions in slurry
reactors using CFD. Past reviews in this field are specifically focused on the CFD …

A conceptual multilevel approach to polyolefin reaction engineering

JBP Soares, TFL McKenna - The Canadian Journal of Chemical …, 2022 - Wiley Online Library
This article gives a wide overview of different types of mathematical models that can be used
to describe the polymerization of linear olefins with coordination catalysts. We expanded the …

Early-stage particle fragmentation behavior of a commercial silica-supported metallocene catalyst

S Zanoni, N Nikolopoulos, A Welle… - Catalysis Science & …, 2021 - pubs.rsc.org
Efficient fragmentation of catalyst particles during the polymerization of olefins is a
necessary process to maintain catalyst activity and obtain discrete polymer particles with …

Entanglement formation mechanism in the POSS modified heterogeneous Ziegler–Natta catalysts

Y Chen, P Liang, Z Yue, W Li, C Dong, B Jiang… - …, 2019 - ACS Publications
Chain entanglement was very important for adjusting the processability and mechanical
property of nascent ultrahigh molecular weight polyethylene (UHMWPE). So far, it is still a …

Structure-performance relationship of Mg (OEt) 2-based Ziegler-Natta catalysts

T Wada, T Funako, P Chammingkwan, A Thakur… - Journal of catalysis, 2020 - Elsevier
A multivariate aspect has hampered the clarification of structure-performance relationships
in heterogeneous Ziegler-Natta olefin polymerization catalysis. Here, 16 catalyst samples …

Multiscale modelling of multizone gas phase propylene (co) polymerization reactors—A comprehensive review

K Kulajanpeng, N Sheibat‐Othman… - … Canadian Journal of …, 2022 - Wiley Online Library
Catalysts and polymerization processes have evolved over the years. Such significant
developments have allowed producers to broaden the range of polymer microstructure 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 …

Kinetic features of ethylene polymerization over titanium–magnesium catalysts with different structures and morphology

TB Mikenas, VA Zakharov, MA Matsko - Iranian Polymer Journal, 2022 - Springer
Establishing a relationship between structural characteristics of a catalyst system and
morphology of polymer particles, on the one hand, and the kinetic characteristics of the …

Gas‐Phase Polyethylene Reactors—A Critical Review of Modeling Approaches

RF Alves, T Casalini, G Storti… - Macromolecular …, 2021 - Wiley Online Library
Different approaches to modeling the gas phase polymerization of ethylene that have been
considered in the literature are reviewed. It is shown that while simple, well‐mixed models …