A Novel SiO2‐Supported Cr–V Bimetallic Catalyst Making Polyethylene and Ethylene/1‐Hexene Copolymers with Bimodal Molecular Weight Distribution

N Zhao, R Cheng, X He, Z Liu… - … Chemistry and Physics, 2014 - Wiley Online Library
A novel SiO2‐supported Cr–V bimetallic catalyst for ethylene and ethylene/α‐olefin
polymerization is investigated. This catalyst is prepared using the residual surface hydroxyl …

Novel SiO2‐Supported Silyl‐Chromate(Cr)/Imido‐Vanadium(V) Bimetallic Catalysts Producing Polyethylene and Ethylene/1‐Hexene Copolymers with Bimodal …

N Zhao, R Cheng, X He, Z Liu, B Liu… - Macromolecular …, 2014 - Wiley Online Library
Novel SiO2‐supported silyl‐chromate (Cr)/imido‐vanadium (V)(Cr‐imidoV) bimetallic
catalysts for ethylene and ethylene/α‐olefin polymerization are investigated. These catalysts …

TiCl4/MgCl2/MCM-41 Bi-Supported Ziegler–Natta Catalyst: Effects of Catalyst Composition on Ethylene/1-Hexene Copolymerization

X Liu, W Guo, X Wang, Y Guo, B Zhang, Z Fu, Q Wang… - Catalysts, 2021 - mdpi.com
TiCl4/MgCl2/MCM-41 type bi-supported Ziegler-Natta catalysts with different MgCl2/MCM-
41 ratios were synthesized by adsorbing TiCl4 onto MgCl2 crystallites anchored in …

Vanadium Modification Effects on the (SiO2/MgO/MgCl2)•TiClx Ziegler–Natta Polyethylene Catalyst

J Wang, R Cheng, X He, Z Liu… - Macromolecular …, 2016 - Wiley Online Library
A novel vanadium‐modified (SiO2/MgO/MgCl2)· TiClx Ziegler–Natta ethylene
polymerization catalyst with much better catalytic performance is successfully developed …

Immobilization of [VCl3(N-2,6-Me2C6H3)] Complex on Silica Supports: Synthesis and Catalytic Testing for Ethylene Polymerization

A Fiorentino, P Panariti, L Van Turnhout… - Industrial & …, 2020 - ACS Publications
The heterogenization of 2, 6-dimethylarylimido–vanadium (V) dichloride via chemical
tethering on insoluble silica supports is reported. The effects of the silica particle size, drying …

Imido-modified SiO2-supported Ti/Mg Ziegler-Natta catalysts for ethylene polymerization and ethylene/1-hexene copolymerization

T Fu, R Cheng, X He, Z Liu, Z Tian, B Liu - Polyolefins Journal, 2016 - poj.ippi.ac.ir
A novel imido-modified SiO2-supported Ti/Mg Ziegler-Natta catalyst for ethylene and
ethylene/1-hexene polymerization is investigated. The catalyst is prepared by modification of …

Peculiarities of ethylene polymerization kinetics with an imido-vanadium/silyl-chromate bimetallic catalyst: Effect of polymerization conditions

B Liu, Z Tian, N Zhao, Z Liu, B Liu - Industrial & Engineering …, 2017 - ACS Publications
The effects of various polymerization conditions such as cocatalyst concentration, pressure,
temperature, and reaction time on ethylene homopolymerization over a SiO2-supported …

Novel SiO2‐Supported Chromocene and Vanadium Bimetallic Catalysts Producing Bimodal Polyethylene

K Wang, R Zhang, H Ren, N Zhao, Y Jin… - Macromolecular …, 2020 - Wiley Online Library
Polyethylene (PE) with bimodal molecular weight distribution has intrigued researchers
because of its significant processability and mechanical properties. Novel SiO2‐supported …

Ethylene polymerization using vanadium catalyst supported on silica modified by pyridinium ionic liquid

W Ochędzan‐Siodłak, A Bihun, A Olszowy… - Polymer …, 2016 - Wiley Online Library
Abstract Vanadium catalyst systems (SIL1–3A (B)/V) for ethylene polymerization were
obtained by immobilization of the Cp2VCl2 precursor (V) in the ionic liquid 1‐[3 …

Insights into the effect of vanadium on chromium-vanadium Phillips catalysts for the ethylene polymerization

S Ling, H Ren, R Zhang, Y Liu, B Liu, R Cheng - Polyolefins Journal, 2020 - poj.ippi.ac.ir
The chromium/vanadium bimetallic Phillips catalysts developed by our research group have
been proved to be a promising process to produce bimodal polyethylene using a single …