The influence of process conditions on the competition between ethylene oligomerisation and polymerisation reactions with P,S-bidentate ligands

Boitumelo F. Makume; Munaka C. Maumela; Cedric W. Holzapfel; John T. Dixon

doi:10.1016/j.apcata.2018.09.020

The influence of process conditions on the competition between ethylene oligomerisation and polymerisation reactions with P,S-bidentate ligands

Boitumelo F. Makume
, Munaka C. Maumela
, Cedric W. Holzapfel
, John T. Dixon

Chemical Sciences

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Sulfur-based bidentate ligands are active in Cr-catalysed selective ethylene oligomerisation but generally produce large amounts of solids. Through a systematic process condition optimisation study, the amount of solids formed with two P,S-bidentate ligands was reduced from 88% and 57% to 13% and 6% respectively, while maintaining reasonable oligomerisation activities and achieving high liquid product selectivities (>50% 1-octene and >75% 1-hexene and 1-octene combined). The selective suppression of solids formation indicated that ethylene oligomerisation and polymerisation reactions are possibly facilitated by different catalytic species.

Original language	English
Pages (from-to)	139-146
Number of pages	8
Journal	Applied Catalysis A: General
Volume	567
DOIs	https://doi.org/10.1016/j.apcata.2018.09.020
Publication status	Published - 25 Oct 2018

Keywords

Chromium
Oligomerisation
Polymerisation
Process conditions
Sulfur ligand

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

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10.1016/j.apcata.2018.09.020

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title = "The influence of process conditions on the competition between ethylene oligomerisation and polymerisation reactions with P,S-bidentate ligands",

abstract = "Sulfur-based bidentate ligands are active in Cr-catalysed selective ethylene oligomerisation but generally produce large amounts of solids. Through a systematic process condition optimisation study, the amount of solids formed with two P,S-bidentate ligands was reduced from 88\% and 57\% to 13\% and 6\% respectively, while maintaining reasonable oligomerisation activities and achieving high liquid product selectivities (>50\% 1-octene and >75\% 1-hexene and 1-octene combined). The selective suppression of solids formation indicated that ethylene oligomerisation and polymerisation reactions are possibly facilitated by different catalytic species.",

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AU - Makume, Boitumelo F.

AU - Maumela, Munaka C.

AU - Holzapfel, Cedric W.

AU - Dixon, John T.

PY - 2018/10/25

Y1 - 2018/10/25

N2 - Sulfur-based bidentate ligands are active in Cr-catalysed selective ethylene oligomerisation but generally produce large amounts of solids. Through a systematic process condition optimisation study, the amount of solids formed with two P,S-bidentate ligands was reduced from 88% and 57% to 13% and 6% respectively, while maintaining reasonable oligomerisation activities and achieving high liquid product selectivities (>50% 1-octene and >75% 1-hexene and 1-octene combined). The selective suppression of solids formation indicated that ethylene oligomerisation and polymerisation reactions are possibly facilitated by different catalytic species.

AB - Sulfur-based bidentate ligands are active in Cr-catalysed selective ethylene oligomerisation but generally produce large amounts of solids. Through a systematic process condition optimisation study, the amount of solids formed with two P,S-bidentate ligands was reduced from 88% and 57% to 13% and 6% respectively, while maintaining reasonable oligomerisation activities and achieving high liquid product selectivities (>50% 1-octene and >75% 1-hexene and 1-octene combined). The selective suppression of solids formation indicated that ethylene oligomerisation and polymerisation reactions are possibly facilitated by different catalytic species.

KW - Chromium

KW - Oligomerisation

KW - Polymerisation

KW - Process conditions

KW - Sulfur ligand

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DO - 10.1016/j.apcata.2018.09.020

M3 - Article

AN - SCOPUS:85054053782

SN - 0926-860X

VL - 567

SP - 139

EP - 146

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

ER -

The influence of process conditions on the competition between ethylene oligomerisation and polymerisation reactions with P,S-bidentate ligands

Abstract

Keywords

ASJC Scopus subject areas

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