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Catalytic coatings on steel for low-temperature propane prereforming to solid oxide fuel cell (SOFC) application

Alphonse, Pierre and Ansart, Florence Catalytic coatings on steel for low-temperature propane prereforming to solid oxide fuel cell (SOFC) application. (2009) Journal of Colloid and Interface Science, vol. 336 (n° 2). pp. 658-666. ISSN 0021-9797

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Official URL: http://dx.doi.org/10.1016/j.jcis.2009.04.079

Abstract

Catalyst layers (4–20 lm) of rhodium (1 wt%) supported on alumina, titania, and ceria–zirconia (Ce0.5Zr0.5O2) were coated on stainless-steel corrugated sheets by dip-coating in very stable colloidal dispersions of nanoparticles in water. Catalytic performances were studied for low-temperature (6500 C) steam reforming of propane at a steam to carbon ratio equal to 3 and low contact time (0.01 s). The best catalytic activity for propane steam reforming was observed for titania and ceria–zirconia supports for which propane conversion started at 250 C and was more than three times better at 350 C than conversion measured on alumina catalyst. For all catalysts a first-order kinetics was found with respect to propane at 500 C. Addition of PEG 2000 in titania and ceria–zirconia sols eliminated the film cracking observed without additive with these supports. Besides, the PEG addition strongly expanded the porosity of the layers, so that full catalytic efficiency was maintained when the thickness of the ceria–zirconia and titania films was increased.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Colloid and Interface Science website :http://www.sciencedirect.com/science/journal/00219797
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By:Nihad Lahdifi

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