Catalytic behavior of O2-pretreated Ni3(SbTe3)2 catalyst in oxidative coupling of methane

Sung Han Lee; Jin Seung Jung; Jae Uk Joo; No Seung Myung; Jong Ho Jun; Joong Gil Choi

doi:10.1016/S0926-860X(02)00319-8

Catalytic behavior of O₂-pretreated Ni₃(SbTe₃)₂ catalyst in oxidative coupling of methane

Sung Han Lee, Jin Seung Jung, Jae Uk Joo, No Seung Myung, Jong Ho Jun, Joong Gil Choi

Department of Chemistry

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

3 Citations (Scopus)

Abstract

Amorphous Ni₃(SbTe₃)₂ was prepared from a metathesis between K₃SbTe₃ and NiBr₂ solution and was examined as a catalyst for the oxidative coupling of methane in a single-pass flow reactor system using on-line gas chromatography at atmospheric pressure. Catalytic reaction was performed by feeding the reaction mixture containing CH₄/O₂/He in the temperature range of 600-750 °C. Although amorphous Ni₃(SbTe₃)₂ showed no catalytic activity for the oxidative coupling of methane, the O₂-pretreated Ni₃(SbTe₃)₂ was found to be active and selective for the reaction. Its C₂ selectivities were in the range of 45-79% in the temperature range of 600-750 °C. The best C₂-yield was 11% with a selectivity of 79% at 650 °C. X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses were performed for the O₂-treated Ni₃(SbTe₃)₂ catalyst before and after the catalytic reaction to characterize the catalyst. Thermogravimetry (TG) analysis was performed for amorphous Ni₃(SbTe₃)₂ in a flow of O₂/Ar mixture. Electrical conductivity of amorphous Ni₃(SbTe₃)₂ was measured as a function of temperature in the range of 400-800°C at both P_O2's of 0.01 and 0.20 atm. The results suggest that NiTeO₃ formed on the surface by the O₂-pretreatment of catalyst is active and is the selective phase for the oxidative coupling of methane.

Original language	English
Pages (from-to)	91-101
Number of pages	11
Journal	Applied Catalysis A: General
Volume	237
Issue number	1-2
DOIs	https://doi.org/10.1016/S0926-860X(02)00319-8
Publication status	Published - 2002 Nov

Bibliographical note

Funding Information:
The authors are grateful for financial support from Korea Research Foundation Grant (KRF-2000-042-D00056).

All Science Journal Classification (ASJC) codes

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/S0926-860X(02)00319-8

Cite this

@article{ca3e9c47366e4721b038dc338a07e13e,

title = "Catalytic behavior of O2-pretreated Ni3(SbTe3)2 catalyst in oxidative coupling of methane",

abstract = "Amorphous Ni3(SbTe3)2 was prepared from a metathesis between K3SbTe3 and NiBr2 solution and was examined as a catalyst for the oxidative coupling of methane in a single-pass flow reactor system using on-line gas chromatography at atmospheric pressure. Catalytic reaction was performed by feeding the reaction mixture containing CH4/O2/He in the temperature range of 600-750 °C. Although amorphous Ni3(SbTe3)2 showed no catalytic activity for the oxidative coupling of methane, the O2-pretreated Ni3(SbTe3)2 was found to be active and selective for the reaction. Its C2 selectivities were in the range of 45-79% in the temperature range of 600-750 °C. The best C2-yield was 11% with a selectivity of 79% at 650 °C. X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses were performed for the O2-treated Ni3(SbTe3)2 catalyst before and after the catalytic reaction to characterize the catalyst. Thermogravimetry (TG) analysis was performed for amorphous Ni3(SbTe3)2 in a flow of O2/Ar mixture. Electrical conductivity of amorphous Ni3(SbTe3)2 was measured as a function of temperature in the range of 400-800°C at both PO2's of 0.01 and 0.20 atm. The results suggest that NiTeO3 formed on the surface by the O2-pretreatment of catalyst is active and is the selective phase for the oxidative coupling of methane.",

author = "Lee, {Sung Han} and Jung, {Jin Seung} and Joo, {Jae Uk} and Myung, {No Seung} and Jun, {Jong Ho} and Choi, {Joong Gil}",

note = "Funding Information: The authors are grateful for financial support from Korea Research Foundation Grant (KRF-2000-042-D00056). ",

year = "2002",

month = nov,

doi = "10.1016/S0926-860X(02)00319-8",

language = "English",

volume = "237",

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journal = "Applied Catalysis A: General",

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T1 - Catalytic behavior of O2-pretreated Ni3(SbTe3)2 catalyst in oxidative coupling of methane

AU - Lee, Sung Han

AU - Jung, Jin Seung

AU - Joo, Jae Uk

AU - Myung, No Seung

AU - Jun, Jong Ho

AU - Choi, Joong Gil

N1 - Funding Information: The authors are grateful for financial support from Korea Research Foundation Grant (KRF-2000-042-D00056).

PY - 2002/11

Y1 - 2002/11

N2 - Amorphous Ni3(SbTe3)2 was prepared from a metathesis between K3SbTe3 and NiBr2 solution and was examined as a catalyst for the oxidative coupling of methane in a single-pass flow reactor system using on-line gas chromatography at atmospheric pressure. Catalytic reaction was performed by feeding the reaction mixture containing CH4/O2/He in the temperature range of 600-750 °C. Although amorphous Ni3(SbTe3)2 showed no catalytic activity for the oxidative coupling of methane, the O2-pretreated Ni3(SbTe3)2 was found to be active and selective for the reaction. Its C2 selectivities were in the range of 45-79% in the temperature range of 600-750 °C. The best C2-yield was 11% with a selectivity of 79% at 650 °C. X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses were performed for the O2-treated Ni3(SbTe3)2 catalyst before and after the catalytic reaction to characterize the catalyst. Thermogravimetry (TG) analysis was performed for amorphous Ni3(SbTe3)2 in a flow of O2/Ar mixture. Electrical conductivity of amorphous Ni3(SbTe3)2 was measured as a function of temperature in the range of 400-800°C at both PO2's of 0.01 and 0.20 atm. The results suggest that NiTeO3 formed on the surface by the O2-pretreatment of catalyst is active and is the selective phase for the oxidative coupling of methane.

AB - Amorphous Ni3(SbTe3)2 was prepared from a metathesis between K3SbTe3 and NiBr2 solution and was examined as a catalyst for the oxidative coupling of methane in a single-pass flow reactor system using on-line gas chromatography at atmospheric pressure. Catalytic reaction was performed by feeding the reaction mixture containing CH4/O2/He in the temperature range of 600-750 °C. Although amorphous Ni3(SbTe3)2 showed no catalytic activity for the oxidative coupling of methane, the O2-pretreated Ni3(SbTe3)2 was found to be active and selective for the reaction. Its C2 selectivities were in the range of 45-79% in the temperature range of 600-750 °C. The best C2-yield was 11% with a selectivity of 79% at 650 °C. X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses were performed for the O2-treated Ni3(SbTe3)2 catalyst before and after the catalytic reaction to characterize the catalyst. Thermogravimetry (TG) analysis was performed for amorphous Ni3(SbTe3)2 in a flow of O2/Ar mixture. Electrical conductivity of amorphous Ni3(SbTe3)2 was measured as a function of temperature in the range of 400-800°C at both PO2's of 0.01 and 0.20 atm. The results suggest that NiTeO3 formed on the surface by the O2-pretreatment of catalyst is active and is the selective phase for the oxidative coupling of methane.

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