Methane dehydrogenation and aromatization over 4 wt% Mn/HZSM-5 in the absence of an oxidant

P. L. Tan, Chak Tong AU, Suk Yin LAI*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Methane dehydrogenation and aromatization over 4 wt% Mn/HZSM-5 in the absence of an oxidant (GHSV = 1600 mLh-1 g-1) was investigated. Mn/HZSM-5 was prepared by impregnation of HZSM-5 with manganese acetate tetrahydrate solution; Mn3O4 formed was the precursor of active phase for methane activation. The induction period over Mn/HZSM-5 catalyst before aromatic products appear was long at 700 °C. This period shortened with a rise of the reaction temperature to 800 °C. XPS and TPO results showed that the partly carburized or carburized Mn species formed are probably responsible for methane activation.

Original languageEnglish
Pages (from-to)239-245
Number of pages7
JournalCatalysis Letters
Volume112
Issue number3-4
DOIs
Publication statusPublished - Dec 2006

Scopus Subject Areas

  • Catalysis
  • Chemistry(all)

User-Defined Keywords

  • Active phase
  • Methane aromatization
  • Mn/HZSM-5

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