Carbon dioxide reforming of methane over Ni catalysts supported on Al 2O3 modified with La2O3, MgO, and CaO

Hyun Seog Roh; Ki Won Jun

doi:10.1007/s10563-008-9058-0

Carbon dioxide reforming of methane over Ni catalysts supported on Al ₂O₃ modified with La₂O₃, MgO, and CaO

Hyun Seog Roh, Ki Won Jun

Division of Environmental Engineering

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

91 Citations (Scopus)

Abstract

The preparation of synthesis gas from carbon dioxide reforming of methane (CDR) has attracted increasing attention. The present review mainly focuses on CDR to produce synthesis gas over Ni/MO_x/Al₂O₃ (X = La, Mg, Ca) catalysts. From the examination of various supported nickel catalysts, the promotional effects of La₂O₃, MgO, and CaO have been found. The addition of promoters to Al₂O ₃-supported nickel catalysts enhances the catalytic activity as well as stability. The catalytic performance is strongly dependent on the loading amount of promoters. For example, the highest CH₄ and CO₂ conversion were obtained when the ratios of metal M to Al were in the range of 0.04-0.06. In the case of Ni/La₂O₃/Al₂O ₃ catalyst, the highest CH₄ conversion (96%) and CO ₂ conversion (97%) was achieved with the catalyst (La/Al = 0.05 (atom/atom)). For Ni/CaO/Al₂O₃ catalyst, the catalyst with Ca/Al = 0.04 (atom/atom) exhibited the highest CH₄ conversion (91%) and CO₂ conversion (92%) among the catalysts with various CaO content. Also, Ni/MgO/Al₂O₃ catalyst with Mg/Al = 0.06 (atom/atom) showed the highest CH₄ conversion (89%) and CO ₂ conversion (90%) among the catalysts with various Mg/Al ratios. Thus it is most likely that the optimal ratios of M to Al for the highest activities of the catalysts are related to the highly dispersed metal species. In addition, the improved catalytic performance of Al₂O ₃-supported nickel catalysts promoted with metal oxides is due to the strong interaction between Ni and metal oxide, the stabilization of metal oxide on Al₂O₃ and the basic property of metal oxide to prevent carbon formation.

Original language	English
Pages (from-to)	239-252
Number of pages	14
Journal	Catalysis Surveys from Asia
Volume	12
Issue number	4
DOIs	https://doi.org/10.1007/s10563-008-9058-0
Publication status	Published - 2008 Dec

Bibliographical note

Funding Information:
Acknowledgements This work was conducted as a subject (KK-0803-D0) of KRICT research program ‘‘Sustainable Chemical Technology’’ and also supported in part by Yonsei University Research Fund of 2008.

All Science Journal Classification (ASJC) codes

Catalysis
Chemistry(all)

Access to Document

10.1007/s10563-008-9058-0

Cite this

@article{e38f7d593bd34f309dbb896f322ded9a,

title = "Carbon dioxide reforming of methane over Ni catalysts supported on Al 2O3 modified with La2O3, MgO, and CaO",

abstract = "The preparation of synthesis gas from carbon dioxide reforming of methane (CDR) has attracted increasing attention. The present review mainly focuses on CDR to produce synthesis gas over Ni/MOx/Al2O3 (X = La, Mg, Ca) catalysts. From the examination of various supported nickel catalysts, the promotional effects of La2O3, MgO, and CaO have been found. The addition of promoters to Al2O 3-supported nickel catalysts enhances the catalytic activity as well as stability. The catalytic performance is strongly dependent on the loading amount of promoters. For example, the highest CH4 and CO2 conversion were obtained when the ratios of metal M to Al were in the range of 0.04-0.06. In the case of Ni/La2O3/Al2O 3 catalyst, the highest CH4 conversion (96%) and CO 2 conversion (97%) was achieved with the catalyst (La/Al = 0.05 (atom/atom)). For Ni/CaO/Al2O3 catalyst, the catalyst with Ca/Al = 0.04 (atom/atom) exhibited the highest CH4 conversion (91%) and CO2 conversion (92%) among the catalysts with various CaO content. Also, Ni/MgO/Al2O3 catalyst with Mg/Al = 0.06 (atom/atom) showed the highest CH4 conversion (89%) and CO 2 conversion (90%) among the catalysts with various Mg/Al ratios. Thus it is most likely that the optimal ratios of M to Al for the highest activities of the catalysts are related to the highly dispersed metal species. In addition, the improved catalytic performance of Al2O 3-supported nickel catalysts promoted with metal oxides is due to the strong interaction between Ni and metal oxide, the stabilization of metal oxide on Al2O3 and the basic property of metal oxide to prevent carbon formation.",

author = "Roh, {Hyun Seog} and Jun, {Ki Won}",

note = "Funding Information: Acknowledgements This work was conducted as a subject (KK-0803-D0) of KRICT research program {\textquoteleft}{\textquoteleft}Sustainable Chemical Technology{\textquoteright}{\textquoteright} and also supported in part by Yonsei University Research Fund of 2008.",

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AU - Roh, Hyun Seog

AU - Jun, Ki Won

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N2 - The preparation of synthesis gas from carbon dioxide reforming of methane (CDR) has attracted increasing attention. The present review mainly focuses on CDR to produce synthesis gas over Ni/MOx/Al2O3 (X = La, Mg, Ca) catalysts. From the examination of various supported nickel catalysts, the promotional effects of La2O3, MgO, and CaO have been found. The addition of promoters to Al2O 3-supported nickel catalysts enhances the catalytic activity as well as stability. The catalytic performance is strongly dependent on the loading amount of promoters. For example, the highest CH4 and CO2 conversion were obtained when the ratios of metal M to Al were in the range of 0.04-0.06. In the case of Ni/La2O3/Al2O 3 catalyst, the highest CH4 conversion (96%) and CO 2 conversion (97%) was achieved with the catalyst (La/Al = 0.05 (atom/atom)). For Ni/CaO/Al2O3 catalyst, the catalyst with Ca/Al = 0.04 (atom/atom) exhibited the highest CH4 conversion (91%) and CO2 conversion (92%) among the catalysts with various CaO content. Also, Ni/MgO/Al2O3 catalyst with Mg/Al = 0.06 (atom/atom) showed the highest CH4 conversion (89%) and CO 2 conversion (90%) among the catalysts with various Mg/Al ratios. Thus it is most likely that the optimal ratios of M to Al for the highest activities of the catalysts are related to the highly dispersed metal species. In addition, the improved catalytic performance of Al2O 3-supported nickel catalysts promoted with metal oxides is due to the strong interaction between Ni and metal oxide, the stabilization of metal oxide on Al2O3 and the basic property of metal oxide to prevent carbon formation.

AB - The preparation of synthesis gas from carbon dioxide reforming of methane (CDR) has attracted increasing attention. The present review mainly focuses on CDR to produce synthesis gas over Ni/MOx/Al2O3 (X = La, Mg, Ca) catalysts. From the examination of various supported nickel catalysts, the promotional effects of La2O3, MgO, and CaO have been found. The addition of promoters to Al2O 3-supported nickel catalysts enhances the catalytic activity as well as stability. The catalytic performance is strongly dependent on the loading amount of promoters. For example, the highest CH4 and CO2 conversion were obtained when the ratios of metal M to Al were in the range of 0.04-0.06. In the case of Ni/La2O3/Al2O 3 catalyst, the highest CH4 conversion (96%) and CO 2 conversion (97%) was achieved with the catalyst (La/Al = 0.05 (atom/atom)). For Ni/CaO/Al2O3 catalyst, the catalyst with Ca/Al = 0.04 (atom/atom) exhibited the highest CH4 conversion (91%) and CO2 conversion (92%) among the catalysts with various CaO content. Also, Ni/MgO/Al2O3 catalyst with Mg/Al = 0.06 (atom/atom) showed the highest CH4 conversion (89%) and CO 2 conversion (90%) among the catalysts with various Mg/Al ratios. Thus it is most likely that the optimal ratios of M to Al for the highest activities of the catalysts are related to the highly dispersed metal species. In addition, the improved catalytic performance of Al2O 3-supported nickel catalysts promoted with metal oxides is due to the strong interaction between Ni and metal oxide, the stabilization of metal oxide on Al2O3 and the basic property of metal oxide to prevent carbon formation.

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