Outstanding efficiency of indium in bimetallic catalysts for hydroconversion of bioacids to bioalcohols

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Abstract

Step by step reduction of acetic acid (AA) to ethanol was investigated over novel bimetallic catalysts (PtIn/Al2O3) for the processing of VFAs (volatile fatty acids) that can be produced simply by thermochemical or biological biomass degradation. A fixed bed flow-through reactor was applied with hydrogen stream at 21 bar total pressure in the temperature range of 220-380 C. AA hydroconversion activity of the parent alumina supported Pt catalyst and the yield of selectively produced alcohol can be increased drastically by In2O3 addition. Appearance of metallic indium creating a bimetallic catalyst can direct the consecutive catalytic reduction to ethanol formation inhibiting hydrodecarbonylation. Comparing the In-containing bimetallic catalysts studied recently, NiIn-catalyst showing similar activity to that of the PtIn-catalyst can be a cheap substitute for the expensive Pt catalysts in the reduction carboxylic acids.

Original languageEnglish
Pages (from-to)50-53
Number of pages4
JournalCatalysis Communications
Volume38
DOIs
Publication statusPublished - Aug 5 2013

Fingerprint

Indium
Catalysts
Acetic acid
Acetic Acid
Ethanol
Volatile fatty acids
Volatile Fatty Acids
Aluminum Oxide
Carboxylic Acids
Carboxylic acids
Catalyst supports
Hydrogen
Catalyst activity
Biomass
Alcohols
Alumina
Degradation
Processing

Keywords

  • Acetic acid hydrodeoxygenation
  • bimetallic PtIn catalyst
  • indium co-catalyst ethanol

ASJC Scopus subject areas

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

Cite this

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title = "Outstanding efficiency of indium in bimetallic catalysts for hydroconversion of bioacids to bioalcohols",
abstract = "Step by step reduction of acetic acid (AA) to ethanol was investigated over novel bimetallic catalysts (PtIn/Al2O3) for the processing of VFAs (volatile fatty acids) that can be produced simply by thermochemical or biological biomass degradation. A fixed bed flow-through reactor was applied with hydrogen stream at 21 bar total pressure in the temperature range of 220-380 C. AA hydroconversion activity of the parent alumina supported Pt catalyst and the yield of selectively produced alcohol can be increased drastically by In2O3 addition. Appearance of metallic indium creating a bimetallic catalyst can direct the consecutive catalytic reduction to ethanol formation inhibiting hydrodecarbonylation. Comparing the In-containing bimetallic catalysts studied recently, NiIn-catalyst showing similar activity to that of the PtIn-catalyst can be a cheap substitute for the expensive Pt catalysts in the reduction carboxylic acids.",
keywords = "Acetic acid hydrodeoxygenation, bimetallic PtIn catalyst, indium co-catalyst ethanol",
author = "G. Onyesty{\'a}k",
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journal = "Catalysis Communications",
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T1 - Outstanding efficiency of indium in bimetallic catalysts for hydroconversion of bioacids to bioalcohols

AU - Onyestyák, G.

PY - 2013/8/5

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N2 - Step by step reduction of acetic acid (AA) to ethanol was investigated over novel bimetallic catalysts (PtIn/Al2O3) for the processing of VFAs (volatile fatty acids) that can be produced simply by thermochemical or biological biomass degradation. A fixed bed flow-through reactor was applied with hydrogen stream at 21 bar total pressure in the temperature range of 220-380 C. AA hydroconversion activity of the parent alumina supported Pt catalyst and the yield of selectively produced alcohol can be increased drastically by In2O3 addition. Appearance of metallic indium creating a bimetallic catalyst can direct the consecutive catalytic reduction to ethanol formation inhibiting hydrodecarbonylation. Comparing the In-containing bimetallic catalysts studied recently, NiIn-catalyst showing similar activity to that of the PtIn-catalyst can be a cheap substitute for the expensive Pt catalysts in the reduction carboxylic acids.

AB - Step by step reduction of acetic acid (AA) to ethanol was investigated over novel bimetallic catalysts (PtIn/Al2O3) for the processing of VFAs (volatile fatty acids) that can be produced simply by thermochemical or biological biomass degradation. A fixed bed flow-through reactor was applied with hydrogen stream at 21 bar total pressure in the temperature range of 220-380 C. AA hydroconversion activity of the parent alumina supported Pt catalyst and the yield of selectively produced alcohol can be increased drastically by In2O3 addition. Appearance of metallic indium creating a bimetallic catalyst can direct the consecutive catalytic reduction to ethanol formation inhibiting hydrodecarbonylation. Comparing the In-containing bimetallic catalysts studied recently, NiIn-catalyst showing similar activity to that of the PtIn-catalyst can be a cheap substitute for the expensive Pt catalysts in the reduction carboxylic acids.

KW - Acetic acid hydrodeoxygenation

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KW - indium co-catalyst ethanol

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