Flexible ligands in heterogeneous catalysts for olefin polymerization: Insights from spectroscopy

A Piovano, E Groppo - Coordination Chemistry Reviews, 2022 - Elsevier
Heterogeneous catalysis for olefin polymerization is one of the most relevant industrial
processes in terms of worldwide diffusion, material volume, and economic turnover. At the …

Fundamental aspects of heterogeneous Ziegler–Natta olefin polymerization catalysis: An experimental and computational overview

J Kumawat, VK Gupta - Polymer Chemistry, 2020 - pubs.rsc.org
MgCl2 supported Ziegler–Natta (Z–N) catalysts have emerged as the most exciting chemical
process for polyolefin technology, which is responsible for the production of∼ 150 million …

Nontraditional catalyst supports in surface organometallic chemistry

RJ Witzke, A Chapovetsky, MP Conley… - ACS …, 2020 - ACS Publications
The field of Surface Organometallic Chemistry (SOMC) aims to blend the positive attributes
of homogeneous and heterogeneous catalysis. Significant insight into heterogeneous …

Formation of highly active Ziegler–Natta catalysts clarified by a multifaceted characterization approach

A Piovano, T Wada, A Amodio, G Takasao, T Ikeda… - ACS …, 2021 - ACS Publications
Although the formation of nanosized and defective δ-MgCl2 is essential for the performance
of Ziegler–Natta catalysts, the process has not sufficiently been elucidated due to certain …

A brief review on selected applications of hybrid materials based on functionalized cage-like silsesquioxanes

Ł John, J Ejfler - Polymers, 2023 - mdpi.com
Rapid developments in materials engineering are accompanied by the equally rapid
development of new technologies, which are now increasingly used in various branches of …

Exploring cocatalyst type effect on the Ziegler–Natta catalyzed ethylene polymerizations: Experimental and DFT studies

M Masoori, M Nekoomanesh, S Posada-Pérez… - Journal of Polymer …, 2022 - Springer
Due to the important role of cocatalyst in the polymerization process employing industrially
favored Ziegler–Natta catalysts, its effect on kinetic behavior, catalyst activity, and polymer …

[HTML][HTML] Silica-magnesium-titanium Ziegler-Natta catalysts. Part 1: Structure of the pre-catalyst at a molecular level

J Zarupski, A Piovano, M Signorile, A Amodio, L Olivi… - Journal of …, 2023 - Elsevier
In this paper, which is the first part of a more extended work, we elucidate the molecular
level structure of a highly active SiO 2-supported Ziegler-Natta precatalyst obtained by …

Mechanistic Study on Effect of Electron Donors in Propylene Polymerization Using the Ziegler–Natta Catalyst

X Guo, L Cui, Y Wang, J Yi, J Sun, Z Liu… - The Journal of Physical …, 2021 - ACS Publications
TiCl4/MgCl2 catalysts are still the main industrial catalyst for isotactic polypropylene at
present. However, the mechanism of isotactic polymerization of propylene has not been fully …

Revisiting the identity of δ-MgCl2: Part II. Morphology and exposed surfaces studied by vibrational spectroscopies and DFT calculation

A Piovano, M D'Amore, T Wada, PC Bruzzese… - Journal of catalysis, 2020 - Elsevier
The activation of MgCl 2 is an essential step for preparing performant Ziegler-Natta (ZN)
catalysts for olefin polymerization, either by mechanical grinding of pristine MgCl 2 or by …

Understanding the Role of Sulfonyl Amine Donors in Propylene Polymerization Using MgCl2-Supported Ziegler–Natta Catalyst

X Guo, L Cui, J Yi, Z Liu, B Liu - The Journal of Physical Chemistry …, 2022 - ACS Publications
Ziegler–Natta catalysts are one of the mainly used industrial catalysts for the large-scale
production of polyolefins. As one of the important components in a Ziegler–Natta catalyst …