A highly chlorinated xylene promoter for ethylene–propylene copolymerisation over a vanadium catalyst

Hexachloro-p-xylene was found to be an effective promoter of olefin copolymerisation in the presence of vanadium catalyst, which increases the activity severalfold, enhances propylene incorporation in the copolymer, and results in a more homogeneous polymer.

An efficient CO2 fixation reaction with epoxides catalysed by in situ formed blue vanadium catalyst from dioxovanadium(+5) complex: moisture enhanced and atmospheric oxygen retarded catalytic activity

In situ formed vanadium(+4) species catalyzed carbon dioxide fixation reaction, leading to 99% conversion of epoxides to cyclic carbonates under mild conditions is reported here, along with the study on the in situ formed catalyst to some extent.

Oxidative processing of propane into important petrochemical products on deposited vanadium catalysts

The paper presents the data on activity of the deposited catalyst based on vanadium. The developed catalyst allows conducting the process of oxidative conversion of propane into ethylene and hydrogen using CO2 as an oxidant. The study of the activity of the developed vanadium catalyst at the oxidative conversion of propane showed that the maximum ethylene yield was 24.5% at: C3H8:CO2=2:1, T=700°C and W=1000 h-1. The increase of temperature to 800°C resulted in the in formation of 27.5% hydrogen. By methods of BET and XRD the developed catalyst 5% V/Al2O3, is differed by increase of specific surface area and bonding of the carrier with active phase, contributing to increase of efficiency of the developed catalyst in the oxidative conversion of propane to ethylene and hydrogen.