The catalytic performance and characterization of a durable perovskite-type chloro-oxide SrFeO3-δClσ catalyst selective for the oxidative dehydrogenation of ethane

H. X. Dai, C. F. Ng, Chak Tong AU*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

The catalytic performances and properties of SrFeO3-0.190 and SrFeO3-0.382Cl0.443 catalysts have been investigated for the oxidative dehydrogenation of ethane (ODE). XRD results showed that both catalysts exhibited oxygen-deficient perovskite-type structures. The inclusion of chloride ions in the SrFeO3-δ lattice matrix can significantly enhance ethene selectivity and ethane conversion. The SrFeO3-0.382Cl0.443 catalyst showed an ethane conversion of ca. 90%, an ethene selectivity of ca. 70%, and an ethene yield of ca. 63% under the reaction conditions: C2H6 : O2 : N2 = 2 : 1 : 3.7, temperature 680°C, and space velocity 6000 mlh-1 g-1. With the increase of space velocity, ethane conversion decreased, whereas ethene selectivity increased over SrFeO3-0.382Cl0.443. Lifetime studies showed that the perovskite-type chloro-oxide catalyst was durable. The results of O2-TPD and TPR experiments illustrated that the implanted chloride ions caused the oxygen nature of SrFeO3-δ to change. By regulating the concentration of oxygen vacancies and the Fe4+/Fe ratio in this perovskite-type chloro-oxide catalyst, one can generate a durable chloro-oxide catalyst for the ODE reaction with excellent performance.

Original languageEnglish
Pages (from-to)115-120
Number of pages6
JournalCatalysis Letters
Volume57
Issue number3
DOIs
Publication statusPublished - Feb 1999

Scopus Subject Areas

  • Catalysis
  • Chemistry(all)

User-Defined Keywords

  • Chloro-oxides
  • Ethane
  • Ethene
  • Ferrates-based catalysts
  • Oxidative dehydrogenation
  • Perovskites
  • Selective oxidation
  • SrFeOCl

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