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Renewable Hydrogen Production via Aqueous Phase Reforming of Biomass Derived Oxygenates

By R. Oord

Abstract

Aqueous phase reforming of oxygenated hydrocarbons has several advantages over steam reforming since it is more selective, possible in a single reaction step and there is no need for vaporization which lowers the energy demands. The technique is already pioneered by the group of Dumesic. The use of glycerol is highly interesting, since it is a byproduct of the still growing biodiesel production. The role of the support is still not totally clear. In this research, the performance of platinum based catalyst supported on mixed metal oxides, produced out of diverent ratio Mg to Al layered double hydroxides also known as LDH, is studied on aqueous phase reforming of 10% glycerol solution. It was tested in an autoclave equiped with a back pressure regulator, running in semi batch mode. All catalyst led to a hydrogen rich gas phase, all showing a higher hydrogen selectivity as the benchmark catalyst; 1% Pt supported on Al2O3. The catalysts supported on high ratio Mg/Al show the highest selectivity towards hydrogen. However, there were some problems regarding the stability of the catalysts

Topics: Biomass, Carbon dioxide, Catalysis, Hydrogen, Catalytic reforming, alternative energy, hydrogen, low temperature, platinum, LDH, Aqueous phase reforming
Year: 2012
OAI identifier: oai:dspace.library.uu.nl:1874/255226
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