Issue 2, 2012
From the journal:

Catalysis Science & Technology

Upgrading of biomass transformation residue: influence of gas flow composition on acetic acid ketonic condensation

Aqeel Ahmad Taimoor,a   Alain Favre-Réguillon,*ab   Laurent Vanoyea  and  Isabelle Pitault*a  

* Corresponding authors

a Laboratoire de Génie des Procédés Catalytiques (LGPC), UMR 2214 CNRS/CPE Lyon, Université de Lyon, 43 boulevard du 11 novembre 1918, 69616 Villeurbanne cedex, France
E-mail: ipl@lgpc.cpe.fr

b Laboratoire des Transformations Chimiques et Pharmaceutiques (LTCP), Conservatoire National des Arts et Métiers, 2 rue Conté, 75003 Paris, France
E-mail: afr@lgpc.cpe.fr

Abstract

Acetic acid, a common biomass transformation residue, can be converted into acetone by direct ketonization in the gas phase over γ-Fe2O3 (maghemite) pre-activated at 450 °C under air. This reaction was performed in a continuous flow reactor with varying temperature from 250 to 300 °C and different carrier gases. Using N2 as carrier gas, the activity of the iron based catalyst normally increased with increasing temperature and contact time and remained constant under stationary operating conditions. A slight decrease of activity was observed using a N2/CO2 mixture as carrier gas. A strong enhancement of the activity was observed when H2 was introduced in the carrier gas, as a N2/H2 or CO2/H2 mixture. This improvement could be attributed to the modification of the oxidation state of the iron catalyst used for which in situ characterisation is still to be performed.

Graphical abstract: Upgrading of biomass transformation residue: influence of gas flow composition on acetic acid ketonic condensation

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Article information

DOI
https://doi.org/10.1039/C1CY00346A
Article type
Paper
Submitted
30 Aug 2011
Accepted
11 Oct 2011
First published
08 Nov 2011

Catal. Sci. Technol., 2012,2, 359-363

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Upgrading of biomass transformation residue: influence of gas flow composition on acetic acid ketonic condensation

A. A. Taimoor, A. Favre-Réguillon, L. Vanoye and I. Pitault, Catal. Sci. Technol., 2012, 2, 359 DOI: 10.1039/C1CY00346A

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