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The catalytic hydroconversion of lower bio-carboxylic acids to bio-alcohols

The catalytic hydroconversion of lower bio-carboxylic acids to bio-alcohols. György Onyestyák. Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences Hungarian Academy of Sciences,. HUSK kick-off meeting October 17, 2012. +H 2. +H 2. +H 2. acid.

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The catalytic hydroconversion of lower bio-carboxylic acids to bio-alcohols

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  1. The catalytic hydroconversion of lower bio-carboxylic acids to bio-alcohols GyörgyOnyestyák Institute of Materials and Environmental Chemistry Research Centre for Natural Sciences Hungarian Academy of Sciences, HUSK kick-off meeting October 17, 2012

  2. +H2 +H2 +H2 acid aldehyde olefin ether ester paraffin -H2O -H2O Bio-carboxylic acids to bio-alcohols Main platforms of the biomass destruction and chemical utilization : →Edible parts-biodiesel from C-rich triglycerides dead ends -ethanol from sugar and starch →Non-edible(cut-offs) -thermochemical - total: synthesisgas → metanol /Green Oscar/ - partial: pyrolisis oil /volatile fattyacids,too/ -biochemical (aneorobic) → acetic acid → bio-gas C6H12O6 → 3CH3COOH→ 3CH4 + 3CO2 ↓ Adkins, Raney, etc.→novel, efficient, selective deoxygenating cataysts desired alcohol Aim:development of novel catalysts and proccesses

  3. Comparison of Ni/ and Ni2In/alumina catalysts 9Ni/Al2O3 300 °C ←hydrodecarbonylation and minor reduction 9Ni/Al2O3+ 10% In2O3 change of the mechanism  ← partial reduction and minor dehydration

  4. Indium dopping effect for 9Ni/Al2O3 270 °C

  5. Comparison of the commercial Adkins and a novel Ni2In/Al2O3 catalysts 72 % CuCr2O4 + 28 % CuO 9Ni/Al2O3 + 10% In2O3

  6. HT-XRD studies on a 9Ni/Al2O3 + 10% In2O3 mixture * InNi2

  7. Comparison of the commercial Adkins and a novel Ni2In/Al2O3 catalysts 72 % CuCr2O4 + 28 % CuO 9Ni/Al2O3 + 10% In2O3

  8. A reaction schema on the base of detected products in acetic acid hydroconversion

  9. Conclusions • Indium additive can effectively direct the step by step catalytic deoxygenation to alcohol formation instead of hydrodecarbonylation probably due to formation of a new Ni2In phase. • /10 papers and 1 chapter are already published and 2+1 of them under this HUSK support/

  10. The following studies • The influence of various supports • The influence of various metallic co-catalysts • Optimization of catalyst preparation • Reaction kinetics studies • Understanding the mechanism • Application other real reactant originated from biomass instead of acetic acid in the hydro-conversion

  11. Thanks for your attention! Hungarian folk-song: „Válaszúti csárdában, Ecet ég a lámpában. Jaj de homályosan ég, Kilenc legény a vendég.” …

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