BTX production by coaromatization of methane and propane over gallium oxide supported on mesoporous HZSM-5

Min Yeong Gim, Changyeol Song, Tae Hyeop Kim, Ji Hwan Song, Do Heui Kim, Kwan Young Lee, In Kyu Song

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

2 wt% GaOy catalysts supported on mesoporous HZSM-5 and microporous HZSM-5 (denoted as 2GaOy/meso-HZSM-5 and 2GaOy/micro-HZSM-5, respectively) were prepared for use in the BTX (benzene, toluene, and xylene) production by coaromatization of methane and propane. It was revealed that 2GaOy/meso-HZSM-5 catalyst showed higher reactant conversion and initial BTX yield than 2GaOy/micro-HZSM-5 catalyst due to the enhanced mass transfer through 2GaOy/meso-HZSM-5 catalyst. On the basis of this result, a series of XGaOy/meso-HZSM-5 (X = 0.5, 1, 2, 4, and 6) catalysts with different gallium oxide loading (X, wt%) were prepared for BTX production by coaromatization of methane and propane. The effect of gallium oxide loading on the acid properties and catalytic activities of XGaOy/meso-HZSM-5 catalysts was investigated. It was found that total acidity of the catalysts served as a crucial factor determining the catalytic performance in the BTX production. Conversion of reactants and initial BTX yield increased with increasing total acidity of the catalysts. Among the catalysts tested, 2GaOy/meso-HZSM-5 catalyst with the largest total acidity showed the best catalytic performance in the BTX production. Thus, an optimal gallium oxide loading of XGaOy/meso-HZSM-5 catalysts was required for maximum production of BTX by coaromatization of methane and propane.

Original languageEnglish
Pages (from-to)134-142
Number of pages9
JournalMolecular Catalysis
Volume439
DOIs
Publication statusPublished - 2017 Oct 1

Keywords

  • BTX production
  • Coaromatization of methane and propane
  • Gallium oxide
  • Mesoporous HZSM-5
  • Total acidity

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology
  • Physical and Theoretical Chemistry

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