Hydrogen generation via catalytic partial dehydrogenation of gasoline and diesel fuels

International audienc

Evaluation of proton conducting BCY10-based anode supported cells by co-pressing method: Up-scaling, performances and durability

One of the main target of the French ANR CONDOR (2009-2011) project coordinated by EDF-EIFER was the elaboration of proton conducting BaCe0,9Y0,1O3−δ-based cells using processes suitable at industrial level. Thus, commercial powders produced at kilogram scale (anode, electrolyte and cathode) have been analysed and used. Then, elaboration of protonic ceramic half-cells by co-pressing method from 25 mm to 80 mm in diameter has been assessed in order to establish the suitability of this shaping method regarding industrial requirements. According to results, the co-pressing method is relevant for the elaboration of cells up to 40 mm in diameter (laboratory experiment). A sintering step was carried out to densify the electrolyte layer to get a gas-tight membrane. Nickelate-based cathodes were screen-printed and electrochemical performances of the final assembly have been measured. Electrical power up to 180 mW cm−2 at 600 °C has been obtained on both 25 and 40 mm cells

Hydrogen generation by catalytic partial dehydrogenation of low-sulfur fractions produced from kerosene Jet A-1

International audienc

Pt-Sn/\u3b3-Al2O3 and Pt-Sn-Na/\u3b3-Al 2O3 catalysts for hydrogen production by dehydrogenation of Jet A-1 fuel: Characterisation and preliminary activity tests

The partial dehydrogenation of fuels like diesel or kerosene cuts to produce H2 is an emerging idea of increasing interest. In the present work the study of the partial dehydrogenation of Jet A-1 fuel on Pt\u2013Sn/\u3b3-Al2O3 based catalysts to produce H2 to feed an on-board (aircraft) proton exchange membrane fuel cell is presented. Extensive physico-chemical characterization of 5% wt.Pt-1% wt.Sn/\u3b3-Al2O3 and 5%wt.Pt-1%wt.Sn-1%wt.Na/\u3b3-Al2O3 pelleted materials has been performed. A gradient of the active metals from the edge to the centre of the pellet has been observed. A higher concentration of Pt0 has been detected on the outer part of the pellet than in the inner part, whereas Sn has been detected only on the external part of the pellet. The investigated materials are active as catalysts for the partial dehydrogenation of normal and desulfurised Jet A-1 kerosene fuel. The presence of sulfur compounds and coke deposition strongly affects the H2 productivity which decreases rapidly with time on stream. The presence of a Na cation addition contributes to give the highest and most sustained H2 production. The condensed outlet liquid stream retains the fuel properties in the range of the Jet A-1 kerosene fuel. These are encouraging preliminary results, inviting further research; coking and sulfur poisoning as well as identification of appropriate reaction conditions are the main challenges to be overcome in the immediate future