NDLI: Towards an organic thermally regenerative fuel cell for truck engines

Content Provider	Royal Society of Chemistry (RSC)
Author	Little, Vanessa Renee Davis, Boyd Vandersleen, John Carrier, Andrew Dean, Darrell Jessop, Philip G.
Copyright Year	2012
Abstract	A thermally regenerative fuel cell (TRFC) on board a long-haul truck would convert waste heat from the engine or exhaust into electrical energy. We propose a TRFC in which waste-heat drives the endothermic dehydrogenation of a secondary benzylic alcohol to the corresponding ketone in a catalytic reaction chamber adjacent to the engine. 1-Phenyl-1-propanol has been identified as a suitable alcohol. In a fully functioning TRFC, the H2 produced from the dehydrogenation will be sent to the fuel cell's anode, while the ketone, propiophenone, will be sent to the cathode to serve as an oxidant, together producing electricity to charge a battery that could power auxiliary vehicle components. The electrochemical reduction of the ketone back to the original benzylic alcohol would take place at the cathode. For such a system to be viable, both reactions must be very selective and rapid. Herein, the initial development of this system and the implications of catalyst and benzylic alcohol choice on the performance of both of these reactions are discussed. For the dehydrogenation of 1-phenyl-1-propanol, Pd/SiO2 offers the highest selectivity (99.65%) at 200 °C. For the re-hydrogenation of the analogous ketone, propiophenone, palladium catalysts offer the highest selectivity, although the highest rates are observed for platinum immobilized on Vulcan XC-72 carbon support; surface modification of commercial catalysts with n-butyl tin also affects the selectivity and rate in a manner that depends on the choice of catalyst support. It has also been shown that the electronic and steric properties of the phenyl ring substituents and the identity of the alkyl chain affect the rate and selectivity.
Starting Page	7111
Ending Page	7123
Page Count	13
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	5
Issue Number	5
Journal	Energy & Environmental Science
DOI	10.1039/c2ee03170a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Fuel cell Waste heat Endothermic process Dehydrogenation Ketone 1-Propanol Anode Propiophenone Cathode Electrochemistry Phenyl group Avro Vulcan Carbon Tin Alkyl
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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