Preferential CO oxidation over Pt/3A zeolite catalysts in H2-rich gas for fuel cell application |
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Authors: | Ilaria Rosso Camilla Galletti Sabina Fiorot Guido Saracco Edoardo Garrone Vito Specchia |
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Affiliation: | (1) Dipartimento di Scienza dei Materiali e Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy;(2) Present address: Electro Power Systems S.P.A., Via Grange Palmer, 104, 10091 Alpignano, Torino, Italy |
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Abstract: | Even traces of CO in the hydrogen-rich gas fed to proton exchange membrane fuel cells (PEMFC) poison the platinum anode electrode
and dramatically decrease the cell power output. In this work, several 1%Pt catalysts, all on 3A-type zeolite support, were
prepared starting from different precursors and employing different methods: cation exchange (CE), wet impregnation (WI) and
incipient wetness impregnation (IWI). The catalysts were characterised in terms of platinum dispersion and tested under realistic
conditions in the quest of a catalyst for the removal of CO via the CO preferential oxidation (CO-PROX) reaction. The best
catalytic performance was shown by the 1%Pt–3A catalyst prepared by IWI starting from Pt(NH3)4Cl2 as a precursor, thanks to its highest platinum dispersion. |
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Keywords: | 3A zeolite Catalysis Preferential CO oxidation Fuel cell |
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