Tubular lanthanum cobaltite perovskite-type membrane reactors for partial oxidation of methane to syngas

Wanqin Jin, Shiguang Li, Pei Huang, Nanping Xu, Jun Shi, Y. S. Lin

Research output: Contribution to journalArticle

133 Scopus citations

Abstract

The partial oxidation of methane to synthesis gas (syngas) was performed on a tubular La0.6Sr0.4Co0.2Fe0.8O(3-δ) membrane reactor packed with a Ni/γ-Al2O3 catalyst. In 1098-1158K, the CH4 conversion was larger than 96% with the CO selectivity larger than 97% at low methane concentrations in the feed. CH4 conversion decreased and CO selectivity remained essentially constant with increasing concentration of methane in the feed. Carbon deposition on the surface of the catalyst (with H2/CO ratio in the product larger than 2) occurred at high CH4 concentration (>6%) in the feed. Analysis of SEM, XRD and EDS on the used membrane showed metal ion reduction/sublimation and segregation of elements on the membrane surfaces, which led to a redistribution of the metal ions across the membrane after being operated in the membrane reactor at the reaction temperature for 3-7h. Copyright (C) 2000 Elsevier Science B.V.

Original languageEnglish (US)
Pages (from-to)13-22
Number of pages10
JournalJournal of Membrane Science
Volume166
Issue number1
DOIs
StatePublished - Feb 14 2000
Externally publishedYes

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Keywords

  • Ceramic membrane
  • Membrane reactor
  • Perovskite-type oxide
  • Syngas

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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