Carbon nitride boosts the CO2 methanation activity of Ni/CeO2

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F25%3A00142962" target="_blank" >RIV/00216224:14310/25:00142962 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2213343725038497?via%3Dihub#ack0005" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2213343725038497?via%3Dihub#ack0005</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jece.2025.119153" target="_blank" >10.1016/j.jece.2025.119153</a>

Result language
angličtina
Original language name
Carbon nitride boosts the CO2 methanation activity of Ni/CeO2
Original language description
Selective CO2 methanation using green H-2 offers a promising approach for tackling both energy and environmental challenges. Herein, a Ni/CeO2 catalyst was synthesized using a one-pot method in the presence of sacrificial C3N4 and evaluated for COQ methanation. The catalyst exhibited a high CO2 conversion of 82.6 % and a CH4 production rate of up to 178 mmol g(cat)(-1) h(-1), with high CH4 selectivity (99.4 %) at a remarkably low temperature of 250 degrees C. Surface characterization techniques, including Raman spectroscopy, XPS, P-31-MAS NMR of adsorbed trimethylphosphine, and CO2-TPD, demonstrate that the addition of C3N4 significantly enhanced the concentration of surface oxygen vacancies and medium-strength basic sites. In situ DRIFTS analysis indicated that CO2 methanation over Ni/CeO2 proceeded via the RWGS+CO hydrogenation and formate pathways, with the former being predominant at low temperatures. The exceptional low-temperature methanation performance of this new catalyst is attributed to the increased density of oxygen vacancies and medium-strength basic sites.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry

Project
<a href="/en/project/EH23_015%2F0008175" target="_blank" >EH23_015/0008175: Innovation of Czech Infrastructure for Integrative Structural Biology</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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