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CO2 methanation on supported Rh nanoparticles: the combined effect of support oxygen storage capacity and Rh particle size

Botzolaki Georgia, Goula Grammatiki, Rontogianni Anatoli, Nikolaraki Ersi, Chalmpes Nikolaos, Zygouri, Panagiota, 1985-, Karakassides Michalis, Gournis Dimitrios, Charisiou Nikolaos, Goula Maria, Papadopoulos Stylianos, Gentekakis Ioannis

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URIhttp://purl.tuc.gr/dl/dias/EA3246F9-BF02-47CC-A6DD-575D74FE4A92-
Identifierhttps://doi.org/10.3390/catal10080944-
Identifierhttps://www.mdpi.com/2073-4344/10/8/944/htm-
Languageen-
Extent25 pagesen
Extent5,3 megabytesen
TitleCO2 methanation on supported Rh nanoparticles: the combined effect of support oxygen storage capacity and Rh particle sizeen
CreatorBotzolaki Georgiaen
CreatorΜποτζολακη Γεωργιαel
CreatorGoula Grammatikien
CreatorΓουλα Γραμματικηel
CreatorRontogianni Anatolien
CreatorΡοντογιαννη Ανατοληel
CreatorNikolaraki Ersien
CreatorΝικολαρακη Ερσηel
CreatorChalmpes Nikolaosen
CreatorZygouri, Panagiota, 1985-en
CreatorKarakassides Michalisen
CreatorGournis Dimitriosen
CreatorCharisiou Nikolaosen
CreatorGoula Mariaen
CreatorPapadopoulos Stylianosen
CreatorGentekakis Ioannisen
CreatorΓεντεκακης Ιωαννηςel
PublisherMDPIen
Content SummaryCO2 hydrogenation toward methane, a reaction of high environmental and sustainable energy importance, was investigated at 200–600 °C and H2/CO2 = 4/1, over Rh nanoparticles dispersed on supports with different oxygen storage capacity characteristics (γ-Al2O3, alumina-ceria-zirconia, and ceria-zirconia). The effects of the support OSC and Rh particle size on reaction behavior under both integral and differential conditions were investigated, to elucidate the combined role of these crucial catalyst design parameters on methanation efficiency. A volcano-type variation of methanation turnover frequency was found in respect to support OSC; Rh/ACZ, with intermediate OSC, was the optimal catalyst. The structure sensitivity of the reaction was found to be a combined function of support OSC and Rh particle size: For Rh/γ-Al2O3 (lack of OSC) methanation was strongly favored on small particles—the opposite for Rh/CZ (high OSC). The findings are promising for rational design and optimization of CO2 methanation catalysts by tailoring the aforementioned characteristics.en
Type of ItemPeer-Reviewed Journal Publicationen
Type of ItemΔημοσίευση σε Περιοδικό με Κριτέςel
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2021-06-18-
Date of Publication2020-
SubjectCO2 hydrogenationen
SubjectRhodium nanoparticlesen
SubjectOxygen storage capacityen
SubjectStructure-sensitive reactionen
SubjectAlumina ceria zirconiaen
SubjectMixed oxide supportsen
SubjectOxygen vacanciesen
Bibliographic CitationG. Botzolaki, G. Goula, A. Rontogianni, E. Nikolaraki, N. Chalmpes, P. Zygouri, M. Karakassides, D. Gournis, N. Charisiou, M. Goula, S. Papadopoulos, and I. Yentekakis, “CO2 methanation on supported Rh nanoparticles: the combined effect of support oxygen storage capacity and Rh particle size,” Catalysts, vol. 10, no. 8, Aug. 2020. doi: 10.3390/catal10080944en

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