Cu, Co, Ni nanoparticles supported ceria catalysts in ambient pressure CO2 hydrogenation

Bali Henrik and Mutyala Suresh and Ábel Marietta and Sápi András and Kukovecz Ákos and Kónya Zoltán: Cu, Co, Ni nanoparticles supported ceria catalysts in ambient pressure CO2 hydrogenation.

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Abstract

A series of CeO2 supported Cu, Co, and Ni catalysts have been synthesized by the wetimpregnation method for CO2 thermo-catalytic hydrogenation from 200 – 400 °C in the fixed bed reactor. All catalysts were characterized by XRD, N2-isotherms, and H2 temperatureprogrammed reduction. XRD results have suggested that the incorporated Cu, Co, and Ni have uniformly distributed on the CeO2 surface, N2-isotherm analysis confirmed that the pores of CeO2 were blocked by incorporated metals and H2-TPR indicated strong interaction between active metal and CeO2. The CO2 consumption rate and product selectivity depend on the type of active metal on CeO2 and reaction temperature. The order of CO2 consumption rate for 5wt% catalysts was 5Ni/CeO2 > 5Co/CeO2 > 5Cu/CeO2 at 400 °C. The high CO2 consumption rate for 5Ni/CeO2 was attributed to the presence of more number of active metallic Ni during the reaction which dissociated H2 molecule to H-atoms. The formed H-atoms reacted with active CO2 molecule and formed CH4 with 100% selectivity.

Item Type: Conference or Workshop Item
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2021
Volume: 27
ISBN: 978-963-306-835-9
Page Range: pp. 85-88
Language: English
Publisher: University of Szeged
Place of Publication: Szeged
Event Title: International Symposium on Analytical and Environmental Problems (27.) (2021) (Szeged)
Related URLs: http://acta.bibl.u-szeged.hu/75798/
Uncontrolled Keywords: Környezetkémia
Additional Information: Bibliogr.: 88. p. ; ill. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.04. Chemical sciences
Date Deposited: 2022. May. 26. 13:44
Last Modified: 2022. Aug. 08. 15:40
URI: http://acta.bibl.u-szeged.hu/id/eprint/75931

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