Ιδρυματικό Αποθετήριο [SANDBOX]
Πολυτεχνείο Κρήτης
EN  |  EL

Αναζήτηση

Πλοήγηση

Ο Χώρος μου

Support-induced modifications on the CO2 hydrogenation performance of Ni/CeO2: the effect of ZnO doping on CeO2 nanorods

Varvoutis Georgios, Karakoulia Stamatia A., Lykaki Maria, Stefa Sofia, Binas Vassilios, Marnellos, George, 19..-, Konsolakis Michail

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/B9ABA9F0-1D12-4932-8591-0D8DDD97C51C-
Αναγνωριστικόhttps://doi.org/10.1016/j.jcou.2022.102057-
Αναγνωριστικόhttps://www.sciencedirect.com/science/article/pii/S2212982022001767-
Γλώσσαen-
Μέγεθος15 pagesen
ΤίτλοςSupport-induced modifications on the CO2 hydrogenation performance of Ni/CeO2: the effect of ZnO doping on CeO2 nanorodsen
ΔημιουργόςVarvoutis Georgiosen
ΔημιουργόςKarakoulia Stamatia A.en
ΔημιουργόςLykaki Mariaen
ΔημιουργόςΛυκακη Μαριαel
ΔημιουργόςStefa Sofiaen
ΔημιουργόςΣτεφα Σοφιαel
ΔημιουργόςBinas Vassiliosen
ΔημιουργόςMarnellos, George, 19..-en
ΔημιουργόςKonsolakis Michailen
ΔημιουργόςΚονσολακης Μιχαηλel
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 (project code: T2EDK-01378).en
ΠερίληψηThe production of either CO or CH4 via the hydrogenation of CO2 is amongst the most promising routes for CO2 utilization. However, kinetic barriers necessitate the use of a catalyst, with Ni/CeO2 being one of the most investigated systems. Nevertheless, surface chemistry fine-tuning via appropriate promotional routes can induce significant modifications on the solid-state properties of catalysts and in turn on their activity/selectivity. In the present work, we originally report on the outstanding selectivity alteration of Ni/CeO2 by ZnO doping. Specifically, Ni-based catalysts supported on ZnO, CeO2 nanorods or a mixed ZnO-CeO2 oxide were synthesized by a modified hydrothermal method and characterized by various physicochemical methods. Notable changes in the reaction pathway were demonstrated, as the presence of ZnO largely favored CO production at T < 450 oC for both Ni/ZnO and Ni/ZnO-CeO2, whereas Ni/CeO2 was completely selective to CH4. These findings were interpreted on the basis of ZnO-induced inhibitory effects on key activity/selectivity descriptors like the redox and basic properties, as well as on the adsorption affinity of CO species, which are considered as intermediate species for CO2 methanation.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2024-01-15-
Ημερομηνία Δημοσίευσης2022-
Θεματική ΚατηγορίαCO2 hydrogenationen
Θεματική ΚατηγορίαNi/CeO2en
Θεματική ΚατηγορίαZnO promotionen
Θεματική ΚατηγορίαSelectivity modificationen
Θεματική ΚατηγορίαSupport effecten
Βιβλιογραφική ΑναφοράG. Varvoutis, S. A. Karakoulia, M. Lykaki, S. Stefa, V. Binas, G. E. Marnellos, and M. Konsolakis, “Support-induced modifications on the CO2 hydrogenation performance of Ni/CeO2: the effect of ZnO doping on CeO2 nanorods,” J. CO2 Util., vol. 61, July 2022, doi: 10.1016/j.jcou.2022.102057.en

Υπηρεσίες

Στατιστικά