Oxidative coupling of methane over LaF3/La2O3 catalysts

C. T. Au; Y. Q. Zhang; C. F. Ng; H. L. Wan

doi:10.1007/BF00811372

Oxidative coupling of methane over LaF₃/La₂O₃ catalysts

C. T. Au^*, Y. Q. Zhang, C. F. Ng, H. L. Wan

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

9 Citations (Scopus)

Abstract

We studied the oxidative coupling of methane over the LaF₃/La₂O₃ (50:50) catalyst. The catalyst was found active even at 873 K. At 1023 K, the C₂ yield was 12.7% at 26.0% CH₄ conversion and 49.1% C₂ selectivity. It was found to be stable and had a lifetime not less than 50 h at 1023 K. The catalyst was effective in C₂H₆ conversion to C₂H₄. XRD results indicated that the catalyst was mainly rhombohedral LaOF. It is suggested that the catalyst has ample stoichiometric defects and generates active oxygen sites suitable for methane dehydrogenation.

Original language	English
Pages (from-to)	377-386
Number of pages	10
Journal	Catalysis Letters
Volume	23
Issue number	3-4
DOIs	https://doi.org/10.1007/BF00811372
Publication status	Published - May 1994

Scopus Subject Areas

Catalysis
General Chemistry

User-Defined Keywords

LaO
LaF
Oxidative coupling of methane
rhombohedral LaOF

Access to Document

10.1007/BF00811372

Cite this

@article{443a393e00f24c9a877bf360d122b1c1,

title = "Oxidative coupling of methane over LaF3/La2O3 catalysts",

abstract = "We studied the oxidative coupling of methane over the LaF3/La2O3 (50:50) catalyst. The catalyst was found active even at 873 K. At 1023 K, the C2 yield was 12.7% at 26.0% CH4 conversion and 49.1% C2 selectivity. It was found to be stable and had a lifetime not less than 50 h at 1023 K. The catalyst was effective in C2H6 conversion to C2H4. XRD results indicated that the catalyst was mainly rhombohedral LaOF. It is suggested that the catalyst has ample stoichiometric defects and generates active oxygen sites suitable for methane dehydrogenation.",

keywords = "LaO, LaF, Oxidative coupling of methane, rhombohedral LaOF",

author = "Au, {C. T.} and Zhang, {Y. Q.} and Ng, {C. F.} and Wan, {H. L.}",

year = "1994",

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doi = "10.1007/BF00811372",

language = "English",

volume = "23",

pages = "377--386",

journal = "Catalysis Letters",

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T1 - Oxidative coupling of methane over LaF3/La2O3 catalysts

AU - Au, C. T.

AU - Zhang, Y. Q.

AU - Ng, C. F.

AU - Wan, H. L.

PY - 1994/5

Y1 - 1994/5

N2 - We studied the oxidative coupling of methane over the LaF3/La2O3 (50:50) catalyst. The catalyst was found active even at 873 K. At 1023 K, the C2 yield was 12.7% at 26.0% CH4 conversion and 49.1% C2 selectivity. It was found to be stable and had a lifetime not less than 50 h at 1023 K. The catalyst was effective in C2H6 conversion to C2H4. XRD results indicated that the catalyst was mainly rhombohedral LaOF. It is suggested that the catalyst has ample stoichiometric defects and generates active oxygen sites suitable for methane dehydrogenation.

AB - We studied the oxidative coupling of methane over the LaF3/La2O3 (50:50) catalyst. The catalyst was found active even at 873 K. At 1023 K, the C2 yield was 12.7% at 26.0% CH4 conversion and 49.1% C2 selectivity. It was found to be stable and had a lifetime not less than 50 h at 1023 K. The catalyst was effective in C2H6 conversion to C2H4. XRD results indicated that the catalyst was mainly rhombohedral LaOF. It is suggested that the catalyst has ample stoichiometric defects and generates active oxygen sites suitable for methane dehydrogenation.

KW - LaO

KW - LaF

KW - Oxidative coupling of methane

KW - rhombohedral LaOF

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JO - Catalysis Letters

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