Direct synthesis of methanol by partial oxidation of methane with oxygen over cobalt modified mesoporous H-ZSM-5 catalyst

Yuni Krisyuningsih Krisnandi* (Corresponding Author), Bayu Adi Samodro, Riwandi Sihombing, Russell Francis Howe

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

Partial oxidation of methane over mesoporous catalyst cobalt modified H-ZSM-5 has been carried out. Mesoporous Na-ZSM-5 (Si/Al = 35.4) was successfully synthesized using double template method which has high surface area (450 m2/g) and average pore diameter distribution of 1.9 nm. The as-synthesized Na-ZSM-5 was converted to H-ZSM-5 through multi-exchange treatment with ammonium ion solution, causing decreased crystallinity and surface area, but increased porous diameter, due to dealumination during treatment process. Moreover, H-ZSM-5 was loaded with cobalt (Co = 2.5% w) by the incipient impregnation method and calcined at 550 °C. Partial oxidation of methane was performed in the batch reactor with 0.75 bar methane and 2 bar of nitrogen (with impurities of 0.5% oxygen) as the input at various reaction time (30, 60 and 120 min). The reaction results show that cobalt species in catalyst has an important role, because H-ZSM-5 cannot produce methanol in partial oxidation of methane. The presence of molecular oxygen increased the percentage of methanol yield. The reaction is time-dependent with the highest methanol yield (79%) was acquired using Co/H-ZSM-5 catalyst for 60 min.

Original languageEnglish
Pages (from-to)263-268
Number of pages6
JournalIndonesian Journal of Chemistry
Volume15
Issue number3
DOIs
Publication statusPublished - Nov 2015

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Keywords

  • Cobalt
  • H-ZSM-5
  • Methane
  • Methanol
  • Partial oxidation

ASJC Scopus subject areas

  • Chemistry(all)

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