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Catalytic alkylation of acetone with ethanol over Pd/carbon catalyst in flow-through system via borrowing hydrogen route

Gyula Novodárszki, György Onyestyák, Ágnes Farkas Wellisch, Aranka Pilbáth

Abstract


Consecutive alkylation of acetone with ethanol as model reactants was studied in order to obtain biomass based fuels by continuous processing of acetone-butanol-ethanol (ABE) mixture. Butanol, which can inevitably form as Guerbet side product in a self-aldol reaction of ethanol was not applied in our study as an initial component, in order to follow the complexity of the reaction mechanism. A flow-through reactor was applied with inert He or reducing H2 stream in the temperature range of 150-350 °C. Efficient catalysts containing Pd and base (K3PO4 or CsOH) crystallites were prepared applying commercial activated carbon (AC) support. The catalyst beds were pre-treated in H2 flow at 350 °C. Mono- or dialkylated ketones were formed with high yields and these products could be reduced only to alcohols over palladium.


Keywords


Acetone; Alcohols; C-alkylation; Pd/C catalysts

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DOI: http://dx.doi.org/10.17344/acsi.2015.1992

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Copyright (c) 2016 Gyula Novodárszki, György Onyestyák, Ágnes Farkas Wellisch, Aranka Pilbáth

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