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Hydrogen production by ethanol steam reforming (ESR) over CeO2 supported transition metal (Fe, Co, Ni, Cu) catalysts: insight into the structure-activity relationship

Konsolakis Michail, Ioakimidis Zisis, Kraia Tzouliana, Marnellos, Georges E

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URIhttp://purl.tuc.gr/dl/dias/E3F4A929-08FA-4BA9-9FFA-68E683F60545-
Identifierhttps://www.mdpi.com/2073-4344/6/3/39-
Identifierhttps://doi.org/10.3390/catal6030039-
Languageen-
Extent27 pagesen
TitleHydrogen production by ethanol steam reforming (ESR) over CeO2 supported transition metal (Fe, Co, Ni, Cu) catalysts: insight into the structure-activity relationshipen
CreatorKonsolakis Michailen
CreatorΚονσολακης Μιχαηλel
CreatorIoakimidis Zisisen
CreatorKraia Tzoulianaen
CreatorMarnellos, Georges Een
PublisherMDPIen
Content SummaryThe aim of the present work was to investigate steam reforming of ethanol with regard to H2 production over transition metal catalysts supported on CeO2. Various parameters concerning the effect of temperature (400-800 ˚C), steam-to-carbon (S/C) feed ratio (0.5, 1.5, 3, 6), metal entity (Fe, Co, Ni, Cu) and metal loading (15-30 wt.%) on the catalytic performance, were thoroughly studied. The optimal performance was obtained for the 20 wt.% Co/CeO2 catalyst, achieving a H2 yield of up to 66% at 400 ˝C. In addition, the Co/CeO 2 catalyst demonstrated excellent stability performance in the whole examined temperature range of 400-800 °C. In contrast, a notable stability degradation, especially at low temperatures, was observed for Ni-, Cu-, and Fe-based catalysts, ascribed mainly to carbon deposition. An extensive characterization study, involving N2 adsorption-desorption (BET), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM/EDS), X-ray Photoelectron Spectroscopy (XPS), and Temperature Programmed Reduction (H>2-TPR) was undertaken to gain insight into the structure-activity correlation. The excellent reforming performance of Co/CeO2 catalysts could be attributed to their intrinsic reactivity towards ethanol reforming in combination to their high surface oxygen concentration, which hinders the deposition of carbonaceous species.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2018-10-19-
Date of Publication2016-
SubjectCeria-based catalystsen
SubjectCobalten
SubjectCopperen
SubjectEthanol steam reformingen
SubjectH2 productionen
SubjectH2-TPRen
SubjectIronen
SubjectNickelen
SubjectStabilityen
SubjectXPSen
Bibliographic CitationM. Konsolakis, Z. Ioakimidis, T. Kraia and G. E. Marnellos, "Hydrogen production by ethanol steam reforming (ESR) over CeO2 supported transition metal (Fe, Co, Ni, Cu) catalysts: insight into the structure-activity relationship," Catalysts, vol. 6, no. 3, Mar. 2016. doi: 10.3390/catal6030039en

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