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Efficient CO2 hydrogenation over mono- and bi-metallic RuNi/MCM-41 catalysts: controlling CH4 and CO products distribution through the preparation method and/or partial replacement of Ni by Ru

Rontogianni Anatoli, Chalmpes Nikolaos, Nikolaraki Ersi, Botzolaki Georgia, Androulakis Athanasios, Stratakis Antonios, Zygouri Panagiota, Moschovas Dimitrios, Avgeropoulos Apostolos, Karakassides Michael A., Gournis Dimitrios, Tsatsos Sotirios, Kyriakou Georgios, Boukos Nikos, Panagiotopoulou Paraskevi, Gentekakis Ioannis

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/B3533E1A-E953-4BF0-AF27-5E2141693F89-
Αναγνωριστικόhttps://doi.org/10.1016/j.cej.2023.145644-
Αναγνωριστικόhttps://www.sciencedirect.com/science/article/pii/S1385894723043759-
Γλώσσαen-
Μέγεθος26 pagesen
ΤίτλοςEfficient CO2 hydrogenation over mono- and bi-metallic RuNi/MCM-41 catalysts: controlling CH4 and CO products distribution through the preparation method and/or partial replacement of Ni by Ruen
ΔημιουργόςRontogianni Anatolien
ΔημιουργόςΡοντογιαννη Ανατοληel
ΔημιουργόςChalmpes Nikolaosen
ΔημιουργόςNikolaraki Ersien
ΔημιουργόςΝικολαρακη Ερσηel
ΔημιουργόςBotzolaki Georgiaen
ΔημιουργόςΜποτζολακη Γεωργιαel
ΔημιουργόςAndroulakis Athanasiosen
ΔημιουργόςΑνδρουλακης Αθανασιοςel
ΔημιουργόςStratakis Antoniosen
ΔημιουργόςΣτρατακης Αντωνιοςel
ΔημιουργόςZygouri Panagiotaen
ΔημιουργόςMoschovas Dimitriosen
ΔημιουργόςAvgeropoulos Apostolosen
ΔημιουργόςKarakassides Michael A.en
ΔημιουργόςGournis Dimitriosen
ΔημιουργόςTsatsos Sotiriosen
ΔημιουργόςKyriakou Georgiosen
ΔημιουργόςBoukos Nikosen
ΔημιουργόςPanagiotopoulou Paraskevien
ΔημιουργόςΠαναγιωτοπουλου Παρασκευηel
ΔημιουργόςGentekakis Ioannisen
ΔημιουργόςΓεντεκακης Ιωαννηςel
ΕκδότηςElsevieren
ΠεριγραφήThis research has been co-financed by the European Union and Greek national funds through the Greece 2.0 National Recovery and Resilience Fund, under the call RESEARCH - CREATE - INNOVATE (projects code: T1EDK-00782 and T2EDK-00955)en
ΠερίληψηCO2 methanation is receiving special attention nowadays due to the urgent environmental and energy need to control/recycle CO2 emissions. Herein the reaction is investigated over mono- and bi-metallic RuNi catalysts supported on mesoporous MCM-41 materials. Monometallic-Ru catalysts were always superior to their monometallic-Ni counterparts, while the bimetallic-RuNi, although outperforming monometallic-Ni, were inferior to monometallic-Ru. The CO2 methanation efficiency of monometallic-Ni catalysts was found to be highly dependent on the catalyst preparation method: One-pot synthesis provided catalysts almost completely ineffective for methanation, but very effective for the reverse-water–gas-shift (RWGS) reaction producing syngas at low temperatures. In striking contrast, compositionally identical Ni catalysts prepared by impregnation were efficient in CO2 methanation. An important for practical purposes redispersion of already stabilized large Ni crystallites was achieved by adding small amounts of Ru via the formation of core(Ru)-shell(Ni) nano-configurations. Detailed characterizations, kinetic and in-situ DRIFTS studies allowed the convincing interpretation of the novel findings.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2025-09-10-
Ημερομηνία Δημοσίευσης2023-
Θεματική ΚατηγορίαCO hydrogenationen
Θεματική ΚατηγορίαRuNi bimetallic catalystsen
Θεματική ΚατηγορίαΜesoporous MCM-41 silicaen
Θεματική ΚατηγορίαCO methanationen
Θεματική ΚατηγορίαSabatier reactionen
Βιβλιογραφική ΑναφοράA. Rontogianni, Ν. Chalmpes, E. Nikolaraki, G. Botzolaki, A. Androulakis, A. Stratakis, P. Zygouri, D. Moschovas, A. Avgeropoulos, M. Α. Karakassides, D. P. Gournis, S. Tsatsos, G. Kyriakou, N. K. Boukos, P. Panagiotopoulou, and I. V. Yentekakis, “Efficient CO2 hydrogenation over mono- and bi-metallic RuNi/MCM-41 catalysts: controlling CH4 and CO products distribution through the preparation method and/or partial replacement of Ni by Ru,” Chem. Eng. J., vol. 474, Oct. 2023, doi: 10.1016/j.cej.2023.145644.el

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