Issue 9, 2011
From the journal:

Green Chemistry

Direct transformation of ethanol into ethyl acetate through catalyticmembranes containing Pd or Pd-Zn: comparison with conventional supported catalysts

Adriana Bonilla Sánchez,ab   Narcís Homs,ab   Sylvain Miachon,†c   Jean-Alain Dalmon,c   José Luis G. Fierrod  and  Pilar Ramírez de la Piscina*a  

* Corresponding authors

a Departament de Química Inorgànica, Facultat de Química and Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, C/Martí i Franquès 1-11, Barcelona, Spain
E-mail: pilar.piscina@qi.ub.es
Fax: +34 934407725
Tel: +34 934037056

b Catalonia Institute for Energy Research (IREC), Jardins de les dones de negre 1, Sant Adrià del Besòs (Barcelona), Spain

c Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON), UMR 5256 CNRS-Université de Lyon. 2, Av. A. Einstein, Villeurbanne cedex, France

d Instituto de Catálisis y Petroleoquímica, CSIC, C/Marie Curie s/n, Cantoblanco, Madrid, Spain

Abstract

Ethanol dehydrogenating coupling was studied at 523 K and 1 MPa over catalytic membrane reactors (CMRs) and conventional supported catalysts based on Pd or Pd-Zn on CeO2-ZrO2. A wet impregnation method based on evaporation-crystallization was used to deposit Pd or Pd and Zn on membrane reactors of TiO2 with a top layer of CeO2-ZrO2 and a pore size of 5 nm. These systems were compared with conventional CeO2-ZrO2-supported Pd or Pd-Zn catalysts. Monometallic Pd systems favoured the decomposition of ethanol giving CO and CH4 as the main products. The presence of Zn in both Pd/CeO2-ZrO2 and CMRs containing Pd inhibited ethanol decomposition and favoured the production of acetaldehyde; the effect is greater for CMRs and is related to the presence of PdZn entities together with the porous system of CMRs. Acetaldehyde was subsequently transformed to ethyl acetate.

Graphical abstract: Direct transformation of ethanol into ethyl acetate through catalytic membranes containing Pd or Pd-Zn: comparison with conventional supported catalysts

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Article information

DOI
https://doi.org/10.1039/C1GC15559H
Article type
Paper
Submitted
16 May 2011
Accepted
23 Jun 2011
First published
28 Jul 2011

Green Chem., 2011,13, 2569-2575

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Direct transformation of ethanol into ethyl acetate through catalytic membranes containing Pd or Pd-Zn: comparison with conventional supported catalysts

A. B. Sánchez, N. Homs, S. Miachon, J. Dalmon, J. L. G. Fierro and P. Ramírez de la Piscina, Green Chem., 2011, 13, 2569 DOI: 10.1039/C1GC15559H

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