Effect of surface properties controlled by Ce addition on CO2 methanation over Ni/Ce/Al2O3 catalyst

Min Jae Kim; Jae Rang Youn; Hye Jeong Kim; Myung Won Seo; Doyeon Lee; Kang Seok Go; Ki Bong Lee; Sang Goo Jeon

doi:10.1016/j.ijhydene.2020.06.144

Effect of surface properties controlled by Ce addition on CO₂ methanation over Ni/Ce/Al₂O₃ catalyst

Min Jae Kim
, Jae Rang Youn
, Hye Jeong Kim
, Myung Won Seo
, Doyeon Lee
, Kang Seok Go
, Ki Bong Lee
, Sang Goo Jeon^*

^*Corresponding author for this work

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

94 Citations (Scopus)

Abstract

Ce-promoted Ni/Al₂O₃ catalysts with Ce contents of 0, 5, 10, 15, and 20 wt% were investigated for CO₂ methanation. Ni/15Ce/Al₂O₃ showed good selectivity and catalytic performance in CO₂ methanation and remained stable at 350 °C for 80 h with minor fluctuations. Interactions between Ni and the Ce/Al₂O₃ support was characterized using X-ray diffraction, temperature-programmed reduction of H₂, temperature-programmed desorption of CO₂, X-ray photoelectron spectroscopy, Raman spectroscopy, and thermogravimetric analysis. Addition of Ce did not increase the catalytic surface area, which can significantly enhance the heterogeneous catalytic activity. However, XPS analysis showed that the Ce on the Ni/Al₂O₃ catalyst changed the surface electron states of Ni, Ce, and O. Additionally, CO₂ adsorption/desorption was confirmed to be related to the amount of Ce present on Ni/Al₂O₃ by TGA and CO₂-TPD. The Ce addition thus played an important role in determining the CO₂ adsorption, desorption, and conversion.

Original language	English
Pages (from-to)	24595-24603
Number of pages	9
Journal	International Journal of Hydrogen Energy
Volume	45
Issue number	46
DOIs	https://doi.org/10.1016/j.ijhydene.2020.06.144
Publication status	Published - 2020 Sept 21

Bibliographical note

Funding Information:
This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No.2019281010007B).

Funding Information:
Funding was received for this work. All of the sources of funding for the work described in this publication are acknowledged below: Korea Institute of Energy Technology Evaluation and Planning, Ministry of Trade, Industry & Energy of the Republic of Korea.This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No.2019281010007B).

Publisher Copyright:
© 2020 Hydrogen Energy Publications LLC

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

CO adsorption
CO methanation
Cerium
Defect oxygen
Nickel

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

Access to Document

10.1016/j.ijhydene.2020.06.144

Cite this

@article{6184caa149d148be818d21af66b2d837,

title = "Effect of surface properties controlled by Ce addition on CO2 methanation over Ni/Ce/Al2O3 catalyst",

abstract = "Ce-promoted Ni/Al2O3 catalysts with Ce contents of 0, 5, 10, 15, and 20 wt\% were investigated for CO2 methanation. Ni/15Ce/Al2O3 showed good selectivity and catalytic performance in CO2 methanation and remained stable at 350 °C for 80 h with minor fluctuations. Interactions between Ni and the Ce/Al2O3 support was characterized using X-ray diffraction, temperature-programmed reduction of H2, temperature-programmed desorption of CO2, X-ray photoelectron spectroscopy, Raman spectroscopy, and thermogravimetric analysis. Addition of Ce did not increase the catalytic surface area, which can significantly enhance the heterogeneous catalytic activity. However, XPS analysis showed that the Ce on the Ni/Al2O3 catalyst changed the surface electron states of Ni, Ce, and O. Additionally, CO2 adsorption/desorption was confirmed to be related to the amount of Ce present on Ni/Al2O3 by TGA and CO2-TPD. The Ce addition thus played an important role in determining the CO2 adsorption, desorption, and conversion.",

keywords = "CO adsorption, CO methanation, Cerium, Defect oxygen, Nickel",

author = "Kim, \{Min Jae\} and Youn, \{Jae Rang\} and Kim, \{Hye Jeong\} and Seo, \{Myung Won\} and Doyeon Lee and Go, \{Kang Seok\} and Lee, \{Ki Bong\} and Jeon, \{Sang Goo\}",

note = "Funding Information: This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry \& Energy (MOTIE) of the Republic of Korea (No.2019281010007B). Funding Information: Funding was received for this work. All of the sources of funding for the work described in this publication are acknowledged below: Korea Institute of Energy Technology Evaluation and Planning, Ministry of Trade, Industry \& Energy of the Republic of Korea.This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry \& Energy (MOTIE) of the Republic of Korea (No.2019281010007B). Publisher Copyright: {\textcopyright} 2020 Hydrogen Energy Publications LLC Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2020",

month = sep,

day = "21",

doi = "10.1016/j.ijhydene.2020.06.144",

language = "English",

volume = "45",

pages = "24595--24603",

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T1 - Effect of surface properties controlled by Ce addition on CO2 methanation over Ni/Ce/Al2O3 catalyst

AU - Kim, Min Jae

AU - Youn, Jae Rang

AU - Kim, Hye Jeong

AU - Seo, Myung Won

AU - Lee, Doyeon

AU - Go, Kang Seok

AU - Lee, Ki Bong

AU - Jeon, Sang Goo

N1 - Funding Information: This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No.2019281010007B). Funding Information: Funding was received for this work. All of the sources of funding for the work described in this publication are acknowledged below: Korea Institute of Energy Technology Evaluation and Planning, Ministry of Trade, Industry & Energy of the Republic of Korea.This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No.2019281010007B). Publisher Copyright: © 2020 Hydrogen Energy Publications LLC Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/9/21

Y1 - 2020/9/21

N2 - Ce-promoted Ni/Al2O3 catalysts with Ce contents of 0, 5, 10, 15, and 20 wt% were investigated for CO2 methanation. Ni/15Ce/Al2O3 showed good selectivity and catalytic performance in CO2 methanation and remained stable at 350 °C for 80 h with minor fluctuations. Interactions between Ni and the Ce/Al2O3 support was characterized using X-ray diffraction, temperature-programmed reduction of H2, temperature-programmed desorption of CO2, X-ray photoelectron spectroscopy, Raman spectroscopy, and thermogravimetric analysis. Addition of Ce did not increase the catalytic surface area, which can significantly enhance the heterogeneous catalytic activity. However, XPS analysis showed that the Ce on the Ni/Al2O3 catalyst changed the surface electron states of Ni, Ce, and O. Additionally, CO2 adsorption/desorption was confirmed to be related to the amount of Ce present on Ni/Al2O3 by TGA and CO2-TPD. The Ce addition thus played an important role in determining the CO2 adsorption, desorption, and conversion.

AB - Ce-promoted Ni/Al2O3 catalysts with Ce contents of 0, 5, 10, 15, and 20 wt% were investigated for CO2 methanation. Ni/15Ce/Al2O3 showed good selectivity and catalytic performance in CO2 methanation and remained stable at 350 °C for 80 h with minor fluctuations. Interactions between Ni and the Ce/Al2O3 support was characterized using X-ray diffraction, temperature-programmed reduction of H2, temperature-programmed desorption of CO2, X-ray photoelectron spectroscopy, Raman spectroscopy, and thermogravimetric analysis. Addition of Ce did not increase the catalytic surface area, which can significantly enhance the heterogeneous catalytic activity. However, XPS analysis showed that the Ce on the Ni/Al2O3 catalyst changed the surface electron states of Ni, Ce, and O. Additionally, CO2 adsorption/desorption was confirmed to be related to the amount of Ce present on Ni/Al2O3 by TGA and CO2-TPD. The Ce addition thus played an important role in determining the CO2 adsorption, desorption, and conversion.

KW - CO adsorption

KW - CO methanation

KW - Cerium

KW - Defect oxygen

KW - Nickel

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