Syngas production via combined steam and carbon dioxide reforming of methane over Ni-Ce/MgAl2O4 catalysts with enhanced coke resistance

Kee Young Koo; Sung Hun Lee; Un Ho Jung; Hyun Seog Roh; Wang Lai Yoon

doi:10.1016/j.fuproc.2013.11.005

Syngas production via combined steam and carbon dioxide reforming of methane over Ni-Ce/MgAl₂O₄ catalysts with enhanced coke resistance

Kee Young Koo, Sung Hun Lee, Un Ho Jung, Hyun Seog Roh, Wang Lai Yoon

Division of Environmental Engineering

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

125 Citations (Scopus)

Abstract

A Ni-Ce/MgAl₂O₄ catalyst was prepared by the co-impregnation method by adjusting the Ce/Ni ratio in a range of 0.0-1.0 for the combined steam and carbon dioxide reforming of methane (CSCRM). The characterization as to surface area, metal dispersion, NiO crystallite size as well as reduction temperature and basicity of prepared catalysts was analyzed by BET, H₂-chemisroption, XRD, TPR and CO₂-TPD. The used catalysts were collected to investigate the coke formation and surface characteristics through SEM, TGA, XPS and Raman analysis. The Ce addition to Ni/MgAl₂O₄ catalyst has significant effects on the NiO crystallite size, metal dispersion and reduction degree. The Ni-Ce/MgAl ₂O₄ catalyst with the Ce/Ni ratio of 0.25 showed the smallest NiO crystallite size of 8.3 nm and the highest metal dispersion of 4.91%. Meanwhile, in the Ni/MgAl₂O₄ (Ce/Ni = 0) catalyst, the NiO crystallite size was found to be as large as 11.0 nm and showed a low metal dispersion of 3.49%. The Ni-Ce/MgAl₂O₄ (Ce/Ni = 0.25) catalyst shows the highest activity and coke resistance in CSCRM due to the improvement of metal dispersion, excellent reducibility as well as effective surface oxygen transfer as evidenced by XPS results.

Original language	English
Pages (from-to)	151-157
Number of pages	7
Journal	Fuel Processing Technology
Volume	119
DOIs	https://doi.org/10.1016/j.fuproc.2013.11.005
Publication status	Published - 2014

Bibliographical note

Funding Information:
This work was conducted under the framework of Research and Development Program of the Korea Institute of Energy Research (KIER) (B3-2413). This work was supported by the Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Knowledge Economy ( 20122010200040 ).

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Fuel Technology
Energy Engineering and Power Technology

Access to Document

10.1016/j.fuproc.2013.11.005

Cite this

@article{527e5fab36a64187a422b923dad53861,

title = "Syngas production via combined steam and carbon dioxide reforming of methane over Ni-Ce/MgAl2O4 catalysts with enhanced coke resistance",

abstract = "A Ni-Ce/MgAl2O4 catalyst was prepared by the co-impregnation method by adjusting the Ce/Ni ratio in a range of 0.0-1.0 for the combined steam and carbon dioxide reforming of methane (CSCRM). The characterization as to surface area, metal dispersion, NiO crystallite size as well as reduction temperature and basicity of prepared catalysts was analyzed by BET, H2-chemisroption, XRD, TPR and CO2-TPD. The used catalysts were collected to investigate the coke formation and surface characteristics through SEM, TGA, XPS and Raman analysis. The Ce addition to Ni/MgAl2O4 catalyst has significant effects on the NiO crystallite size, metal dispersion and reduction degree. The Ni-Ce/MgAl 2O4 catalyst with the Ce/Ni ratio of 0.25 showed the smallest NiO crystallite size of 8.3 nm and the highest metal dispersion of 4.91%. Meanwhile, in the Ni/MgAl2O4 (Ce/Ni = 0) catalyst, the NiO crystallite size was found to be as large as 11.0 nm and showed a low metal dispersion of 3.49%. The Ni-Ce/MgAl2O4 (Ce/Ni = 0.25) catalyst shows the highest activity and coke resistance in CSCRM due to the improvement of metal dispersion, excellent reducibility as well as effective surface oxygen transfer as evidenced by XPS results.",

author = "Koo, {Kee Young} and Lee, {Sung Hun} and Jung, {Un Ho} and Roh, {Hyun Seog} and Yoon, {Wang Lai}",

note = "Funding Information: This work was conducted under the framework of Research and Development Program of the Korea Institute of Energy Research (KIER) (B3-2413). This work was supported by the Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Knowledge Economy ( 20122010200040 ).",

year = "2014",

doi = "10.1016/j.fuproc.2013.11.005",

language = "English",

volume = "119",

pages = "151--157",

journal = "Fuel Processing Technology",

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T1 - Syngas production via combined steam and carbon dioxide reforming of methane over Ni-Ce/MgAl2O4 catalysts with enhanced coke resistance

AU - Koo, Kee Young

AU - Lee, Sung Hun

AU - Jung, Un Ho

AU - Roh, Hyun Seog

AU - Yoon, Wang Lai

N1 - Funding Information: This work was conducted under the framework of Research and Development Program of the Korea Institute of Energy Research (KIER) (B3-2413). This work was supported by the Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korea Government Ministry of Knowledge Economy ( 20122010200040 ).

PY - 2014

Y1 - 2014

N2 - A Ni-Ce/MgAl2O4 catalyst was prepared by the co-impregnation method by adjusting the Ce/Ni ratio in a range of 0.0-1.0 for the combined steam and carbon dioxide reforming of methane (CSCRM). The characterization as to surface area, metal dispersion, NiO crystallite size as well as reduction temperature and basicity of prepared catalysts was analyzed by BET, H2-chemisroption, XRD, TPR and CO2-TPD. The used catalysts were collected to investigate the coke formation and surface characteristics through SEM, TGA, XPS and Raman analysis. The Ce addition to Ni/MgAl2O4 catalyst has significant effects on the NiO crystallite size, metal dispersion and reduction degree. The Ni-Ce/MgAl 2O4 catalyst with the Ce/Ni ratio of 0.25 showed the smallest NiO crystallite size of 8.3 nm and the highest metal dispersion of 4.91%. Meanwhile, in the Ni/MgAl2O4 (Ce/Ni = 0) catalyst, the NiO crystallite size was found to be as large as 11.0 nm and showed a low metal dispersion of 3.49%. The Ni-Ce/MgAl2O4 (Ce/Ni = 0.25) catalyst shows the highest activity and coke resistance in CSCRM due to the improvement of metal dispersion, excellent reducibility as well as effective surface oxygen transfer as evidenced by XPS results.

AB - A Ni-Ce/MgAl2O4 catalyst was prepared by the co-impregnation method by adjusting the Ce/Ni ratio in a range of 0.0-1.0 for the combined steam and carbon dioxide reforming of methane (CSCRM). The characterization as to surface area, metal dispersion, NiO crystallite size as well as reduction temperature and basicity of prepared catalysts was analyzed by BET, H2-chemisroption, XRD, TPR and CO2-TPD. The used catalysts were collected to investigate the coke formation and surface characteristics through SEM, TGA, XPS and Raman analysis. The Ce addition to Ni/MgAl2O4 catalyst has significant effects on the NiO crystallite size, metal dispersion and reduction degree. The Ni-Ce/MgAl 2O4 catalyst with the Ce/Ni ratio of 0.25 showed the smallest NiO crystallite size of 8.3 nm and the highest metal dispersion of 4.91%. Meanwhile, in the Ni/MgAl2O4 (Ce/Ni = 0) catalyst, the NiO crystallite size was found to be as large as 11.0 nm and showed a low metal dispersion of 3.49%. The Ni-Ce/MgAl2O4 (Ce/Ni = 0.25) catalyst shows the highest activity and coke resistance in CSCRM due to the improvement of metal dispersion, excellent reducibility as well as effective surface oxygen transfer as evidenced by XPS results.

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