Catalytic activity of LiSbTe2 for oxidative coupling of methane

Jang Il Kong, Jin Seung Jung, Joong-Gill Choi, Sung Han Lee

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Zintl phase LiSbTe2 was examined as a catalyst for the oxidative coupling of methane to ethane and ethylene in a single-pass flow reactor system using on-line gas chromatography which operated at atmospheric pressure. Catalytic reactions were performed by feeding the reaction mixture containing CH4/O2/He or CH4/O2/H2O/He in the temperature range from 873 to 1023 K. LiSbTe2 catalyst was found to be active and selective for the oxidative coupling of methane only when it was treated under oxygen flow prior to reaction. When the reaction mixture containing CH4/O2/He was fed over the oxygen-pretreated LiSbTe2 catalyst, C2 selectivities were in the range of 40-82%. The best C2 yield was 12% with a selectivity of 69% at 973 K. When the reaction mixture containing CH4/O2/H2O/He was fed over the oxygen-pretreated LiSbTe2 catalyst, C2 selectivities were in the range of 88-91%, in which the best C2 yield was 13% with a selectivity of 88% at 1023 K. It was found from the effect of contact time on the product distribution that ethane was an initial product and ethylene was a secondary product in the reaction. To characterize the catalyst, X-ray diffraction (XRD), X-ray photoelectron spectroscopy, and thermogravimetry analyses were performed for the LiSbTe2 catalyst. The results suggest that oxygen ions chemisorbed on the surface are responsible for the selective activation of methane.

Original languageEnglish
Pages (from-to)241-250
Number of pages10
JournalApplied Catalysis A: General
Volume204
Issue number2
DOIs
Publication statusPublished - 2000 Dec 4

Fingerprint

Methane
Catalyst activity
Oxygen
Catalysts
Ethane
Catalyst selectivity
Ethylene
Online systems
Gas chromatography
Atmospheric pressure
Thermogravimetric analysis
X ray photoelectron spectroscopy
Chemical activation
Ions
X ray diffraction
Temperature
ethylene

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

Cite this

Kong, Jang Il ; Jung, Jin Seung ; Choi, Joong-Gill ; Lee, Sung Han. / Catalytic activity of LiSbTe2 for oxidative coupling of methane. In: Applied Catalysis A: General. 2000 ; Vol. 204, No. 2. pp. 241-250.
@article{02645aad51c346bd949cbbb879daed6c,
title = "Catalytic activity of LiSbTe2 for oxidative coupling of methane",
abstract = "Zintl phase LiSbTe2 was examined as a catalyst for the oxidative coupling of methane to ethane and ethylene in a single-pass flow reactor system using on-line gas chromatography which operated at atmospheric pressure. Catalytic reactions were performed by feeding the reaction mixture containing CH4/O2/He or CH4/O2/H2O/He in the temperature range from 873 to 1023 K. LiSbTe2 catalyst was found to be active and selective for the oxidative coupling of methane only when it was treated under oxygen flow prior to reaction. When the reaction mixture containing CH4/O2/He was fed over the oxygen-pretreated LiSbTe2 catalyst, C2 selectivities were in the range of 40-82{\%}. The best C2 yield was 12{\%} with a selectivity of 69{\%} at 973 K. When the reaction mixture containing CH4/O2/H2O/He was fed over the oxygen-pretreated LiSbTe2 catalyst, C2 selectivities were in the range of 88-91{\%}, in which the best C2 yield was 13{\%} with a selectivity of 88{\%} at 1023 K. It was found from the effect of contact time on the product distribution that ethane was an initial product and ethylene was a secondary product in the reaction. To characterize the catalyst, X-ray diffraction (XRD), X-ray photoelectron spectroscopy, and thermogravimetry analyses were performed for the LiSbTe2 catalyst. The results suggest that oxygen ions chemisorbed on the surface are responsible for the selective activation of methane.",
author = "Kong, {Jang Il} and Jung, {Jin Seung} and Joong-Gill Choi and Lee, {Sung Han}",
year = "2000",
month = "12",
day = "4",
doi = "10.1016/S0926-860X(00)00517-2",
language = "English",
volume = "204",
pages = "241--250",
journal = "Applied Catalysis A: General",
issn = "0926-860X",
publisher = "Elsevier",
number = "2",

}

Catalytic activity of LiSbTe2 for oxidative coupling of methane. / Kong, Jang Il; Jung, Jin Seung; Choi, Joong-Gill; Lee, Sung Han.

In: Applied Catalysis A: General, Vol. 204, No. 2, 04.12.2000, p. 241-250.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Catalytic activity of LiSbTe2 for oxidative coupling of methane

AU - Kong, Jang Il

AU - Jung, Jin Seung

AU - Choi, Joong-Gill

AU - Lee, Sung Han

PY - 2000/12/4

Y1 - 2000/12/4

N2 - Zintl phase LiSbTe2 was examined as a catalyst for the oxidative coupling of methane to ethane and ethylene in a single-pass flow reactor system using on-line gas chromatography which operated at atmospheric pressure. Catalytic reactions were performed by feeding the reaction mixture containing CH4/O2/He or CH4/O2/H2O/He in the temperature range from 873 to 1023 K. LiSbTe2 catalyst was found to be active and selective for the oxidative coupling of methane only when it was treated under oxygen flow prior to reaction. When the reaction mixture containing CH4/O2/He was fed over the oxygen-pretreated LiSbTe2 catalyst, C2 selectivities were in the range of 40-82%. The best C2 yield was 12% with a selectivity of 69% at 973 K. When the reaction mixture containing CH4/O2/H2O/He was fed over the oxygen-pretreated LiSbTe2 catalyst, C2 selectivities were in the range of 88-91%, in which the best C2 yield was 13% with a selectivity of 88% at 1023 K. It was found from the effect of contact time on the product distribution that ethane was an initial product and ethylene was a secondary product in the reaction. To characterize the catalyst, X-ray diffraction (XRD), X-ray photoelectron spectroscopy, and thermogravimetry analyses were performed for the LiSbTe2 catalyst. The results suggest that oxygen ions chemisorbed on the surface are responsible for the selective activation of methane.

AB - Zintl phase LiSbTe2 was examined as a catalyst for the oxidative coupling of methane to ethane and ethylene in a single-pass flow reactor system using on-line gas chromatography which operated at atmospheric pressure. Catalytic reactions were performed by feeding the reaction mixture containing CH4/O2/He or CH4/O2/H2O/He in the temperature range from 873 to 1023 K. LiSbTe2 catalyst was found to be active and selective for the oxidative coupling of methane only when it was treated under oxygen flow prior to reaction. When the reaction mixture containing CH4/O2/He was fed over the oxygen-pretreated LiSbTe2 catalyst, C2 selectivities were in the range of 40-82%. The best C2 yield was 12% with a selectivity of 69% at 973 K. When the reaction mixture containing CH4/O2/H2O/He was fed over the oxygen-pretreated LiSbTe2 catalyst, C2 selectivities were in the range of 88-91%, in which the best C2 yield was 13% with a selectivity of 88% at 1023 K. It was found from the effect of contact time on the product distribution that ethane was an initial product and ethylene was a secondary product in the reaction. To characterize the catalyst, X-ray diffraction (XRD), X-ray photoelectron spectroscopy, and thermogravimetry analyses were performed for the LiSbTe2 catalyst. The results suggest that oxygen ions chemisorbed on the surface are responsible for the selective activation of methane.

UR - http://www.scopus.com/inward/record.url?scp=0034606567&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034606567&partnerID=8YFLogxK

U2 - 10.1016/S0926-860X(00)00517-2

DO - 10.1016/S0926-860X(00)00517-2

M3 - Article

AN - SCOPUS:0034606567

VL - 204

SP - 241

EP - 250

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

IS - 2

ER -