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Cu and Cu2In nanoparticles supported on amorphised zeolites for the selective reduction of biomass derived carboxylic acids to alcohols

Harnos, Szabolcs and Onyestyák, György and Kalló, Dénes (2012) Cu and Cu2In nanoparticles supported on amorphised zeolites for the selective reduction of biomass derived carboxylic acids to alcohols. Microporous and Mesoporous Materials, 167. pp. 109-116.

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Abstract

Octanoic acid (OA) was used as reactant with medium chain length to model the aliphatic carboxylic acids which can be produced by catalytic, thermochemical or biological degradation of biomass. A flow through reactor was applied at 21 bar total pressure (in general at 20 bar hydrogen and 1 bar octanoic acid partial pressures) and 330-380 °C. Cu A-, X- and Y-zeolite based catalysts were pretreated in hydrogen flow at 450 °C. During reduction/dehydration A- and X-zeolite structures collapsed and aluminosilicate supported copper catalysts were formed, which contain copper nanoparticles in high dispersion. The catalyst samples were modified by In2O3 co-catalyst. Fatty acid conversion activity of amorphized zeolite supported Cu catalysts and the yield of selectively produced alcohol can be increased drastically by In2O3 addition. Appearance of metallic indium can effectively rein in the step by step catalytic reduction at alkanol formation previous to dehydration of alcohols to alkenes and ethers.

Item Type: Article
Uncontrolled Keywords: Biomass, Fatty acids, Hydroconversion, Cu-zeolites, Alcohols; In2O3 doping
Subjects: Q Science / természettudomány > QD Chemistry / kémia > QD01 Analytical chemistry / analitikai kémia
Q Science / természettudomány > QD Chemistry / kémia > QD02 Physical chemistry / fizikai kémia
Q Science / természettudomány > QD Chemistry / kémia > QD03 Inorganic chemistry / szervetlen kémia
Depositing User: Dr. György Onyestyák
Date Deposited: 25 Feb 2013 14:39
Last Modified: 25 Feb 2013 14:39
URI: http://real.mtak.hu/id/eprint/4283

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