Oxidative coupling of methane in dense ceramic membrane reactor with high yields

F. T. Akin, Jerry Lin

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

Oxidative coupling of methane (OCM) was studied with dense tubular Bi1.5Y0.3Sm0.2O3 (BYS) membranes at various temperatures (870 - 930°C). BYS powders were synthesized by a citrate method. Tubular-shaped dense membranes of BYS in the fluorite-type FCC phase structure were fabricated by cold isostatic pressing with green machining. The best one-pass C2 (C2H4 + C2H6) yield achieved for OCM in the BYS dead-end membrane reactor was 35% at a C2 selectivity of 54% at 900°C. At the same C2 yield, the membrane reactor mode gives C2 selectivity of over 200% higher than the cofeed mode in the same membrane reactor under similar conditions. The oxygen permeation fluxes through tubular BYS membrane reactors under OCM reaction conditions are approximately 1.5 to 3.5 times higher than those under oxygen permeation conditions with He as the purge. After 6 days of OCM, BYS membrane remained in good integrity with minor phase segregation observed at the reaction side of the membrane.

Original languageEnglish (US)
Pages (from-to)2298-2306
Number of pages9
JournalAICHE Journal
Volume48
Issue number10
DOIs
StatePublished - Oct 1 2002
Externally publishedYes

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Oxidative Coupling
Ceramic membranes
Methane
Ceramics
Membranes
Permeation
Oxygen
Fluorspar
Phase structure
Citric Acid
Powders
Machining
Fluxes
Temperature

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Mechanical Engineering
  • Environmental Engineering
  • Polymers and Plastics

Cite this

Oxidative coupling of methane in dense ceramic membrane reactor with high yields. / Akin, F. T.; Lin, Jerry.

In: AICHE Journal, Vol. 48, No. 10, 01.10.2002, p. 2298-2306.

Research output: Contribution to journalArticle

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