Steam Reforming of Alcohols for Hydrogen Production

ISSN: 2211-5455 (Online)
ISSN: 2211-5447 (Print)


Volume 3, 3 Issues, 2014


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Editor-in-Chief:
Shaobin Wang
Curtin University
Perth, WA 6845 U1987
Australia


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Steam Reforming of Alcohols for Hydrogen Production

Author(s): Ivana Buffoni, Gerardo Santori, Francisco Pompeo and Nora Nichio

Affiliation: Facultad de Ingeniería, PIDCAT, Universidad Nacional de La Plata, 1 esq. 47, 1900, La Plata, Argentina. CINDECA, Facultad de Ciencias Exactas, Universidad Nacional de La Plata. CCT La Plata-CONICET, 47 Nº 257, 1900, La Plata, Argentina.

Abstract

To understand the complexity of the reactions involved in the steam reforming of glycerol and with the aim of identifying the contribution of C-C and C-O bonds cleavage, in this work we have studied the steam reforming of C3 alcohols simpler than glycerol such as 1-propanol, 2-propanol, 1,2-propanediol and 1,3-propanediol. A Pt/SiO2 catalyst was employed and were studied the conversion and the product distribution for each alcohol. It was possible to determine the absence of C-O and C-C bonds cleavage in a secondary alcohol such as 2-propanol and 1,2 propanediol. The presence of reaction intermediates with an aldehyde function, deactivates the catalyst due to their strong adsorption on the metal site, moreover, the presence of hydroxyl-aldehydes promotes the C-C bonds cleavage favoring the gas production. The reaction pathway from glycerol to acetol by cleavage C-O bonding or dehydration on metal site is responsible for the subsequent reactions leading to deactivation.

The main reaction pathway to obtain gaseous products from glycerol reforming involve C-C bonds cleavage of primary alcohols such as 2,3-dihydroxypropanal, 1,2-ethanediol and 2-hydroxyethanal. In order to confirm the proposed reaction pathways, steam reforming of ethylene glycol was performed, identifying this compound as primary intermediates to obtain gaseous products from glycerol.





Keywords: C3-alcohols, platinum catalyst, steam reforming, hydrogen production.

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Article Details

Volume: 3
Issue Number: 2
First Page: 220
Last Page: 228
Page Count: 9
DOI: 10.2174/2211544702666131224224059
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