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Hydrogen Production from Ethanol. Comparing Thermal Catalytic Reactions to Photo-catalytic Reactions.

Published online by Cambridge University Press:  18 July 2011

M. Scott ,
A.M. Nadeem ,
G.I.W. Waterhouse  and
H. Idriss
M. Scott
Affiliation:
Department of Chemistry, University of Auckland, Auckland, New Zealand
A.M. Nadeem
Affiliation:
Department of Chemistry, University of Auckland, Auckland, New Zealand
G.I.W. Waterhouse
Affiliation:
Department of Chemistry, University of Auckland, Auckland, New Zealand
H. Idriss*
Affiliation:
Department of Chemistry, University of Aberdeen, Aberdeen, UK
*
*Corresponding author: [email protected]
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Abstract

Hydrogen production from renewables such as bio-ethanol is one of the most promising processes for energy carriers in a sustainable way. In this work we review and compare two catalytic systems: one based on thermal activation over bimetallic catalysts (Rh-Pd/CeO2) and the other over photo-excited semiconductor catalysts (Au/TiO2 anatine, rutile and anatase/rutile). It is found that the hydrogen yield is far higher on the thermally activated catalysts (at 773K) when compared to that of the photo-exited catalysts (at room temperature); about 60 times. However, the photo-excited catalysts are a promising way to create a fully sustainable system for future applications if the complete removal of hydrogen atoms from water and ethanol are obtained at room temperature.

Keywords

catalyticsurface reactionphotochemical
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1326: Symposium F – Renewable Fuels and Nanotechnology , 2011 , mrss11-1326-f07-07
Copyright
Copyright © Materials Research Society 2010

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