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Reaction kinetics of an ethylene tetramerisation catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
44407 46024 2006 8 PDF Available
Title
Reaction kinetics of an ethylene tetramerisation catalyst
Abstract

This paper describes a study on the reaction kinetics of an ethylene tetramerisation catalyst comprising Cr(acac)3, a bis(diphenylphosphino)isopropylamine ligand and MAO as catalyst activator. The reaction rate was found to be dependent on temperature as well as on ethylene concentration to the order of 1.57. The catalyst deactivation rate was found to be a function of temperature. A reaction rate model was developed providing good description of reaction performance in the temperature range of 35–45 °C and pressure range of 30–45 bar. Selectivity data is provided which illustrates the effects of pressure, temperature and time on stream. Increased temperature and decreased pressure result in increased 1-hexene and decreased 1-octene selectivity, while time on stream data indicates the occurrence of secondary incorporation reactions of 1-hexene and 1-octene.

Keywords
Tetramerisation; Trimerisation; Aluminoxane; Chromium; Bis(diphenylphosphino)isopropylamine; Selective oligomerisation; Reaction kinetics
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 306, 7 June 2006, Pages 184–191
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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