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

Research output: Contribution to journalArticlepeer-review

7 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 languageEnglish
Pages (from-to)139-146
Number of pages8
JournalApplied Catalysis A: General
Volume567
DOIs
Publication statusPublished - 25 Oct 2018

Keywords

  • Chromium
  • Oligomerisation
  • Polymerisation
  • Process conditions
  • Sulfur ligand

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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