Oxidative Coupling of Methane on Oxygen-Semipermeable Yttria-Doped Bismuth Oxide Ceramics in a Reducing Atmosphere

Y. Zeng; Y. S. Lin

doi:10.1021/ie960517c

Oxidative Coupling of Methane on Oxygen-Semipermeable Yttria-Doped Bismuth Oxide Ceramics in a Reducing Atmosphere

Y. Zeng, Y. S. Lin

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

32 Scopus citations

Abstract

Oxidative coupling of methane (OCM) on oxygen-semipermeable δ-phase 25 mol % Y₂O₃/Bi₂O₃ (BY25) in a reducing (methane) atmosphere was studied by measuring transient catalytic properties and weight change of the ceramics when exposed to a methane stream at high temperatures (>800°C). Compared to the results obtained in a fixed-bed reactor operated in the cofeed mode, BY25 ceramics in a pellet form exhibit extremely high C₂ selectivity (94%) and appreciable reactivity (C₂ formation rate of 0.7 μmol/g·s for OCM in a highly reducing methane atmosphere. Experimental results are also reported to show the effects of temperature, flow rate, methane exposure time, helium purge time, and helium to methane ratio on catalytic properties of BY25 pellets in a methane atmosphere. The results indicate that BY25 ceramic membrane materials possess desired catalytic properties for OCM membrane reactor applications.

Original language	English (US)
Pages (from-to)	277-283
Number of pages	7
Journal	Industrial and Engineering Chemistry Research
Volume	36
Issue number	2
DOIs	https://doi.org/10.1021/ie960517c
State	Published - Feb 1997
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

Access to Document

10.1021/ie960517c

Cite this

@article{f50ae981b75d4cbc84956579678f402c,

title = "Oxidative Coupling of Methane on Oxygen-Semipermeable Yttria-Doped Bismuth Oxide Ceramics in a Reducing Atmosphere",

abstract = "Oxidative coupling of methane (OCM) on oxygen-semipermeable δ-phase 25 mol % Y2O3/Bi2O3 (BY25) in a reducing (methane) atmosphere was studied by measuring transient catalytic properties and weight change of the ceramics when exposed to a methane stream at high temperatures (>800°C). Compared to the results obtained in a fixed-bed reactor operated in the cofeed mode, BY25 ceramics in a pellet form exhibit extremely high C2 selectivity (94%) and appreciable reactivity (C2 formation rate of 0.7 μmol/g·s for OCM in a highly reducing methane atmosphere. Experimental results are also reported to show the effects of temperature, flow rate, methane exposure time, helium purge time, and helium to methane ratio on catalytic properties of BY25 pellets in a methane atmosphere. The results indicate that BY25 ceramic membrane materials possess desired catalytic properties for OCM membrane reactor applications.",

author = "Y. Zeng and Lin, {Y. S.}",

year = "1997",

month = feb,

doi = "10.1021/ie960517c",

language = "English (US)",

volume = "36",

pages = "277--283",

journal = "Industrial and Engineering Chemistry Research",

issn = "0888-5885",

publisher = "American Chemical Society",

number = "2",

}

TY - JOUR

T1 - Oxidative Coupling of Methane on Oxygen-Semipermeable Yttria-Doped Bismuth Oxide Ceramics in a Reducing Atmosphere

AU - Zeng, Y.

AU - Lin, Y. S.

PY - 1997/2

Y1 - 1997/2

N2 - Oxidative coupling of methane (OCM) on oxygen-semipermeable δ-phase 25 mol % Y2O3/Bi2O3 (BY25) in a reducing (methane) atmosphere was studied by measuring transient catalytic properties and weight change of the ceramics when exposed to a methane stream at high temperatures (>800°C). Compared to the results obtained in a fixed-bed reactor operated in the cofeed mode, BY25 ceramics in a pellet form exhibit extremely high C2 selectivity (94%) and appreciable reactivity (C2 formation rate of 0.7 μmol/g·s for OCM in a highly reducing methane atmosphere. Experimental results are also reported to show the effects of temperature, flow rate, methane exposure time, helium purge time, and helium to methane ratio on catalytic properties of BY25 pellets in a methane atmosphere. The results indicate that BY25 ceramic membrane materials possess desired catalytic properties for OCM membrane reactor applications.

AB - Oxidative coupling of methane (OCM) on oxygen-semipermeable δ-phase 25 mol % Y2O3/Bi2O3 (BY25) in a reducing (methane) atmosphere was studied by measuring transient catalytic properties and weight change of the ceramics when exposed to a methane stream at high temperatures (>800°C). Compared to the results obtained in a fixed-bed reactor operated in the cofeed mode, BY25 ceramics in a pellet form exhibit extremely high C2 selectivity (94%) and appreciable reactivity (C2 formation rate of 0.7 μmol/g·s for OCM in a highly reducing methane atmosphere. Experimental results are also reported to show the effects of temperature, flow rate, methane exposure time, helium purge time, and helium to methane ratio on catalytic properties of BY25 pellets in a methane atmosphere. The results indicate that BY25 ceramic membrane materials possess desired catalytic properties for OCM membrane reactor applications.

UR - http://www.scopus.com/inward/record.url?scp=0031078906&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031078906&partnerID=8YFLogxK

U2 - 10.1021/ie960517c

DO - 10.1021/ie960517c

M3 - Article

AN - SCOPUS:0031078906

SN - 0888-5885

VL - 36

SP - 277

EP - 283

JO - Industrial and Engineering Chemistry Research

JF - Industrial and Engineering Chemistry Research

IS - 2

ER -

Oxidative Coupling of Methane on Oxygen-Semipermeable Yttria-Doped Bismuth Oxide Ceramics in a Reducing Atmosphere

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this