Selective production of bio-based linear alpha-olefin from wasted fatty alcohol on al2o3 for bio-based chemicals

Hye Jin Lee, Il Ho Choi, Seung Wook Kim, Kyung Ran Hwang

Research output: Contribution to journalArticlepeer-review

Abstract

The catalytic dehydration of a bio-based fatty alcohol was performed using Al2O3 prepared by solvothermal synthesis for selective production of long-chain linear-alpha-olefins (LAO). The effect of the synthesis temperature of alumina precursors on the dehydration of 1-octadecanol (C18H38O) was examined based on the textural properties and Lewis acid–base properties of the catalysts. Amorphous alumina synthesized at 325C showed the highest surface area (233.07 m2/g) and total pore volume (1.237 cm3/g) among the catalysts and the best dehydration results: 93% conversion, 62% selectivity of 1-octadecene (C18H36 ), and 89% LAO purity. This was attributed to the increased Al/O ratio and atomic concentration of surface O in alumina, which were important factors in the catalytic dehydration of 1-octadecanol through the synergistic catalysis of acid–base pairs. The produced bio-based LAO can be key intermediates for synthesis of oxo alcohols and poly-alpha-olefins, as alternatives to petroleum-based LAO to achieve carbon neutrality in chemical industry.

Original languageEnglish
Article number2850
JournalPolymers
Volume13
Issue number17
DOIs
Publication statusPublished - 2021 Sep 1

Keywords

  • Bio-based alpha-olefins
  • Dehydration
  • Long-chain alpha-olefins
  • Solvothermal method
  • Waste fatty alcohol

ASJC Scopus subject areas

  • Chemistry(all)
  • Polymers and Plastics

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