Title Development of a new electrochemical catalyst with an electrochemically assisted regeneration ability for H2 production at low temperatures
Authors De Lucas-Consuegra A. , Caravaca A. , Martínez P.J. , ENDRINO ARMENTEROS, JOSÉ LUIS, Dorado F. , Valverde J.L.
External publication Si
Means J. Catal.
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 1
JCR Impact 5.41500
SJR Impact 3.38000
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-77956360366&doi=10.1016%2fj.jcat.2010.07.007&partnerID=40&md5=9c5ca79a52e2e06ceec44fca8a82bb2b
Publication date 01/01/2010
ISI 000282116100015
Scopus Id 2-s2.0-77956360366
DOI 10.1016/j.jcat.2010.07.007
Abstract A new electrochemical catalyst (Pt-Pt/YSZ/Na-ßAl2O 3) has been prepared and characterized for the H2 production at low temperature from CH4 with a high CO2 selectivity. It has been tested under electrochemical promotion conditions under different reaction systems: steam reforming, partial oxidation and autothermal steam reforming. Among them, the latter system seems to be the most suitable one for the operation of the electrochemical catalyst in a cyclical way between positive and negative polarizations. Under positive polarization, the electrochemical catalyst produced a high amount of H2. However, it was deactivated due to a strong increase in the CH4-derived chemisorption species, which led to carbon deposition. Nevertheless, the subsequent application of negative polarization led to a strong increase in the coverage of O2- and H2O-derived species that caused the removal of the deposited carbon and, hence, the regeneration of the catalyst. The possibility of in situ electrochemical regeneration of a catalyst under fixed conditions could have a significant importance from both theoretical and technological points of view. © 2010 Elsevier Inc. All rights reserved.
Keywords Electrochemical promotion; Electrochemical regeneration; H2 production; Methane steam reforming; NEMCA effects; Partial oxidations; Steam reforming; Chemisorption; Low temperature production; Methane;
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