Structure-function relationship for CO                         
                        2
                                                  methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions

Natalia M. Martin; Felix Hemmingsson; Andreas Schaefer; Martin Ek; Lindsay R. Merte; Uta Hejral; Johan Gustafson; Magnus Skoglundh; Ann Christin Dippel; Olof Gutowski; Matthias Bauer; Per Anders Carlsson

doi:10.1039/c8cy02097c

Structure-function relationship for CO ₂ methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions

Natalia M. Martin, Felix Hemmingsson, Andreas Schaefer, Martin Ek, Lindsay R. Merte, Uta Hejral, Johan Gustafson, Magnus Skoglundh, Ann Christin Dippel, Olof Gutowski, Matthias Bauer, Per Anders Carlsson

Research output: Contribution to journal › Article › peer-review

Abstract

In situ structural and chemical state characterization of Rh/CeO ₂ and Ni/CeO ₂ catalysts during atmospheric pressure CO ₂ methanation has been performed by a combined array of time-resolved analytical techniques including ambient-pressure X-ray photoelectron spectroscopy, high-energy X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy. The ceria phase is partially reduced during the CO ₂ methanation and in particular Ce ³⁺ species seem to facilitate activation of CO ₂ molecules. The activated CO ₂ molecules then react with atomic hydrogen provided from H ₂ dissociation on Rh and Ni sites to form formate species. For the most active catalyst (Rh/CeO ₂ ), transmission electron microscopy measurements show that the Rh nanoparticles are small (average 4 nm, but with a long tail towards smaller particles) due to a strong interaction between Rh particles and the ceria phase. In contrast, larger nanoparticles were observed for the Ni/CeO ₂ catalyst (average 6 nm, with no crystallites below 5 nm found), suggesting a weaker interaction with the ceria phase. The higher selectivity towards methane of Rh/CeO ₂ is proposed to be due to the stronger metal-support interaction.

Original language	English
Pages (from-to)	1644-1653
Number of pages	10
Journal	Catalysis Science and Technology
Volume	9
Issue number	7
DOIs	https://doi.org/10.1039/c8cy02097c
Publication status	Published - 2019

Subject classification (UKÄ)

Chemical Engineering
Biocatalysis and Enzyme Technology
Condensed Matter Physics (including Material Physics, Nano Physics)

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10.1039/c8cy02097c

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NanoLund: Centre for Nanoscience
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Wallenberg, R. (Manager)
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Cite this

Martin, N. M., Hemmingsson, F., Schaefer, A., Ek, M., Merte, L. R., Hejral, U., Gustafson, J., Skoglundh, M., Dippel, A. C., Gutowski, O., Bauer, M., & Carlsson, P. A. (2019). Structure-function relationship for CO ₂ methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions. Catalysis Science and Technology, 9(7), 1644-1653. https://doi.org/10.1039/c8cy02097c

Martin, Natalia M. ; Hemmingsson, Felix ; Schaefer, Andreas et al. / Structure-function relationship for CO ₂ methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions. In: Catalysis Science and Technology. 2019 ; Vol. 9, No. 7. pp. 1644-1653.

@article{a2c233ffedfe4a40abaad22af4f895a0,

title = "Structure-function relationship for CO 2 methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions",

abstract = " In situ structural and chemical state characterization of Rh/CeO 2 and Ni/CeO 2 catalysts during atmospheric pressure CO 2 methanation has been performed by a combined array of time-resolved analytical techniques including ambient-pressure X-ray photoelectron spectroscopy, high-energy X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy. The ceria phase is partially reduced during the CO 2 methanation and in particular Ce 3+ species seem to facilitate activation of CO 2 molecules. The activated CO 2 molecules then react with atomic hydrogen provided from H 2 dissociation on Rh and Ni sites to form formate species. For the most active catalyst (Rh/CeO 2 ), transmission electron microscopy measurements show that the Rh nanoparticles are small (average 4 nm, but with a long tail towards smaller particles) due to a strong interaction between Rh particles and the ceria phase. In contrast, larger nanoparticles were observed for the Ni/CeO 2 catalyst (average 6 nm, with no crystallites below 5 nm found), suggesting a weaker interaction with the ceria phase. The higher selectivity towards methane of Rh/CeO 2 is proposed to be due to the stronger metal-support interaction. ",

author = "Martin, {Natalia M.} and Felix Hemmingsson and Andreas Schaefer and Martin Ek and Merte, {Lindsay R.} and Uta Hejral and Johan Gustafson and Magnus Skoglundh and Dippel, {Ann Christin} and Olof Gutowski and Matthias Bauer and Carlsson, {Per Anders}",

year = "2019",

doi = "10.1039/c8cy02097c",

language = "English",

volume = "9",

pages = "1644--1653",

journal = "Catalysis Science and Technology",

issn = "2044-4753",

publisher = "Royal Society of Chemistry",

number = "7",

}

Martin, NM, Hemmingsson, F, Schaefer, A, Ek, M, Merte, LR, Hejral, U , Gustafson, J, Skoglundh, M, Dippel, AC, Gutowski, O, Bauer, M & Carlsson, PA 2019, 'Structure-function relationship for CO ₂ methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions', Catalysis Science and Technology, vol. 9, no. 7, pp. 1644-1653. https://doi.org/10.1039/c8cy02097c

Structure-function relationship for CO ₂ methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions. / Martin, Natalia M.; Hemmingsson, Felix; Schaefer, Andreas et al.
In: Catalysis Science and Technology, Vol. 9, No. 7, 2019, p. 1644-1653.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Structure-function relationship for CO 2 methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions

AU - Martin, Natalia M.

AU - Hemmingsson, Felix

AU - Schaefer, Andreas

AU - Ek, Martin

AU - Merte, Lindsay R.

AU - Hejral, Uta

AU - Gustafson, Johan

AU - Skoglundh, Magnus

AU - Dippel, Ann Christin

AU - Gutowski, Olof

AU - Bauer, Matthias

AU - Carlsson, Per Anders

PY - 2019

Y1 - 2019

N2 - In situ structural and chemical state characterization of Rh/CeO 2 and Ni/CeO 2 catalysts during atmospheric pressure CO 2 methanation has been performed by a combined array of time-resolved analytical techniques including ambient-pressure X-ray photoelectron spectroscopy, high-energy X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy. The ceria phase is partially reduced during the CO 2 methanation and in particular Ce 3+ species seem to facilitate activation of CO 2 molecules. The activated CO 2 molecules then react with atomic hydrogen provided from H 2 dissociation on Rh and Ni sites to form formate species. For the most active catalyst (Rh/CeO 2 ), transmission electron microscopy measurements show that the Rh nanoparticles are small (average 4 nm, but with a long tail towards smaller particles) due to a strong interaction between Rh particles and the ceria phase. In contrast, larger nanoparticles were observed for the Ni/CeO 2 catalyst (average 6 nm, with no crystallites below 5 nm found), suggesting a weaker interaction with the ceria phase. The higher selectivity towards methane of Rh/CeO 2 is proposed to be due to the stronger metal-support interaction.

AB - In situ structural and chemical state characterization of Rh/CeO 2 and Ni/CeO 2 catalysts during atmospheric pressure CO 2 methanation has been performed by a combined array of time-resolved analytical techniques including ambient-pressure X-ray photoelectron spectroscopy, high-energy X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy. The ceria phase is partially reduced during the CO 2 methanation and in particular Ce 3+ species seem to facilitate activation of CO 2 molecules. The activated CO 2 molecules then react with atomic hydrogen provided from H 2 dissociation on Rh and Ni sites to form formate species. For the most active catalyst (Rh/CeO 2 ), transmission electron microscopy measurements show that the Rh nanoparticles are small (average 4 nm, but with a long tail towards smaller particles) due to a strong interaction between Rh particles and the ceria phase. In contrast, larger nanoparticles were observed for the Ni/CeO 2 catalyst (average 6 nm, with no crystallites below 5 nm found), suggesting a weaker interaction with the ceria phase. The higher selectivity towards methane of Rh/CeO 2 is proposed to be due to the stronger metal-support interaction.

U2 - 10.1039/c8cy02097c

DO - 10.1039/c8cy02097c

M3 - Article

AN - SCOPUS:85063899545

SN - 2044-4753

VL - 9

SP - 1644

EP - 1653

JO - Catalysis Science and Technology

JF - Catalysis Science and Technology

IS - 7

ER -

Martin NM, Hemmingsson F, Schaefer A, Ek M, Merte LR, Hejral U et al. Structure-function relationship for CO ₂ methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions. Catalysis Science and Technology. 2019;9(7):1644-1653. doi: 10.1039/c8cy02097c

Structure-function relationship for CO 2 methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions

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Structure-function relationship for CO ₂ methanation over ceria supported Rh and Ni catalysts under atmospheric pressure conditions