A study of the selective hydroconversion of biocarboxylic acids to bioalcohols over novel indium-nickel/zeolite catalysts using octanoic acid as model reactant

Szabolcs Harnos, György Onyestyák, Szilvia Klébert, Magdalena Štolcová, Alexander Kaszonyi, József Valyon

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Octanoic acid (OA) was hydrotreated in a flow-through reactor at 21 bar total pressure and 240-340 °C over supported metal catalysts prepared from Nizeolites (A, X, P) by indium modification. The Ni-zeolites were activated first in H2 flow at 21 bar and 450 °C. While a fraction of the nickel got fully reduced, the zeolite structure became partially destructed. However, some nickel cations remained unreduced, therefore a large fraction of the crystalline zeolite structure was retained. The indium modification of the reduced Ni-zeolites generated bimetallic NiIn/Ni,H-zeolite catalysts having higher stability, hydroconversion activity, octanol selectivity, and lower hydrodecarbonylation activity than the parent partially destructed Ni-zeolite and the Adkins-type catalysts, commercially applied for the conversion of fatty acids to alcohols.

Original languageEnglish
Pages (from-to)53-62
Number of pages10
JournalReaction Kinetics, Mechanisms and Catalysis
Volume110
Issue number1
DOIs
Publication statusPublished - Oct 1 2013

Keywords

  • Alcohols
  • Biomass
  • Fatty acids
  • Hydroconversion
  • NiIn/Ni,H-zeolites

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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