Oligomerization of light olefins in the presence of a supported BrØnsted acidic ionic liquid catalyst

Csaba Fehér, Szabina Tomasek, Jenő Hancsók, Rita Skoda-Földes

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3 Citations (Scopus)

Abstract

Oligomerization of C4-C5 olefins and olefin mixtures has been investigated in the presence of a supported ionic liquid phase (SILP) catalyst, obtained by the physisorption of 1-(4-sulfobutyl)-3-methylimidazolium trifluoromethanesulfonate on silica. Surface properties of the SILP phase were determined from the experimental data of their nitrogen adsorption/desorption isotherms. Fresh and spent catalyst were characterised by 13C- and 29Si-CP MAS NMR spectroscopy and thermogravimetric analysis. Reactivity of alkenes followed the awaited order of isobutene>but-1-ene>pent-1-ene. The main products of oligomerization of hydrocarbon mixtures, modelling the C4-C5 fraction of waste polyethylene cracking products, were isoolefins in the boiling point range corresponding to kerosene fraction components, which is applicable as jet fuel after hydrotreatment. Stability and recyclability of the catalyst could greatly be enhanced by a pretreatment of the fresh catalyst, carrying out an oligomerization experiment with pure isobutene.

Original languageEnglish
Pages (from-to)52-60
Number of pages9
JournalApplied Catalysis B: Environmental
Volume239
DOIs
Publication statusPublished - Dec 30 2018

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Keywords

  • Catalyst recycling
  • Jet fuel
  • Oligomerization
  • Supported ionic liquid catalyst
  • Waste polyolefin

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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