Remarkable efficiency of Ni supported on hydrothermally synthesized CeO2 nanorods for low-temperature CO2 hydrogenation to methane

Georgios Varvoutis; Maria Lykaki; Sofia Stefa; Eleni Papista; Sónia A. C. Carabineiro; Georgios E. Marnellos; Michalis Konsolakis

doi:10.1016/j.catcom.2020.106036

Remarkable efficiency of Ni supported on hydrothermally synthesized CeO₂ nanorods for low-temperature CO₂ hydrogenation to methane

Georgios Varvoutis, Maria Lykaki, Sofia Stefa, Eleni Papista, Sónia A. C. Carabineiro, Georgios E. Marnellos, Michalis Konsolakis

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Abstract

Nickel particles deposited on hydrothermally synthesized ceria nanorods (CeO₂-NR) were found to be highly active and stable for CO₂ methanation. A CO₂-to-CH₄ yield of 92% was achieved at 300 °C. The impact of various operational parameters was explored in conjunction with a thermodynamic analysis. The superior performance of Ni/CeO₂-NR was demonstrated through a comparison with i) CeO₂ and Ni/CeO₂ commercial products, ii) various M/CeO₂-NR lab-synthesized catalysts (M = Cu, Co, Fe), and iii) state-of-the-art literature catalysts. The results revealed that a unique combination of Ni with ceria nanorods is required for boosting the reducibility and in turn the methanation efficiency.

Original language	English
Article number	106036
Journal	Catalysis Communications
Volume	142
DOIs	https://doi.org/10.1016/j.catcom.2020.106036
Publication status	Published - Jul 2020

Keywords

Ceria nanorods
CO methanation
Ni catalyst
Ni/CeO

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title = "Remarkable efficiency of Ni supported on hydrothermally synthesized CeO2 nanorods for low-temperature CO2 hydrogenation to methane",

abstract = "Nickel particles deposited on hydrothermally synthesized ceria nanorods (CeO2-NR) were found to be highly active and stable for CO2 methanation. A CO2-to-CH4 yield of 92% was achieved at 300 °C. The impact of various operational parameters was explored in conjunction with a thermodynamic analysis. The superior performance of Ni/CeO2-NR was demonstrated through a comparison with i) CeO2 and Ni/CeO2 commercial products, ii) various M/CeO2-NR lab-synthesized catalysts (M = Cu, Co, Fe), and iii) state-of-the-art literature catalysts. The results revealed that a unique combination of Ni with ceria nanorods is required for boosting the reducibility and in turn the methanation efficiency.",

keywords = "Ceria nanorods, CO methanation, Ni catalyst, Ni/CeO",

author = "Georgios Varvoutis and Maria Lykaki and Sofia Stefa and Eleni Papista and Carabineiro, {S{\'o}nia A. C.} and Marnellos, {Georgios E.} and Michalis Konsolakis",

note = "project code: T1EDK-00094 IF/01381/2013/CP1160/CT0007 UIDB/50020/2020 UIDB/50006/2020 ",

year = "2020",

month = jul,

doi = "10.1016/j.catcom.2020.106036",

language = "English",

volume = "142",

journal = "Catalysis Communications",

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T1 - Remarkable efficiency of Ni supported on hydrothermally synthesized CeO2 nanorods for low-temperature CO2 hydrogenation to methane

AU - Varvoutis, Georgios

AU - Lykaki, Maria

AU - Stefa, Sofia

AU - Papista, Eleni

AU - Carabineiro, Sónia A. C.

AU - Marnellos, Georgios E.

AU - Konsolakis, Michalis

N1 - project code: T1EDK-00094 IF/01381/2013/CP1160/CT0007 UIDB/50020/2020 UIDB/50006/2020

PY - 2020/7

Y1 - 2020/7

N2 - Nickel particles deposited on hydrothermally synthesized ceria nanorods (CeO2-NR) were found to be highly active and stable for CO2 methanation. A CO2-to-CH4 yield of 92% was achieved at 300 °C. The impact of various operational parameters was explored in conjunction with a thermodynamic analysis. The superior performance of Ni/CeO2-NR was demonstrated through a comparison with i) CeO2 and Ni/CeO2 commercial products, ii) various M/CeO2-NR lab-synthesized catalysts (M = Cu, Co, Fe), and iii) state-of-the-art literature catalysts. The results revealed that a unique combination of Ni with ceria nanorods is required for boosting the reducibility and in turn the methanation efficiency.

AB - Nickel particles deposited on hydrothermally synthesized ceria nanorods (CeO2-NR) were found to be highly active and stable for CO2 methanation. A CO2-to-CH4 yield of 92% was achieved at 300 °C. The impact of various operational parameters was explored in conjunction with a thermodynamic analysis. The superior performance of Ni/CeO2-NR was demonstrated through a comparison with i) CeO2 and Ni/CeO2 commercial products, ii) various M/CeO2-NR lab-synthesized catalysts (M = Cu, Co, Fe), and iii) state-of-the-art literature catalysts. The results revealed that a unique combination of Ni with ceria nanorods is required for boosting the reducibility and in turn the methanation efficiency.

KW - Ceria nanorods

KW - CO methanation

KW - Ni catalyst

KW - Ni/CeO

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DO - 10.1016/j.catcom.2020.106036

M3 - Article

AN - SCOPUS:85084404597

SN - 1566-7367

VL - 142

JO - Catalysis Communications

JF - Catalysis Communications

M1 - 106036

ER -

Remarkable efficiency of Ni supported on hydrothermally synthesized CeO₂ nanorods for low-temperature CO₂ hydrogenation to methane

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Keywords

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