Atmospheric Production Process for Substitute Natural Gas from Saturated Hydrocarbons 1. Utilization of Catalytic Reaction for Atmospheric Methane Formation

Akira Ninomiya, Misuzu Sato, Hiroyasu Nishiguchi, Tatsumi Ishihara, Yusaku Takita

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1 Citation (Scopus)

Abstract

In order to develop a novel production process for substitute natural gas (SNG), SiO2-supported metal catalysts effective for methane formation from propane and butanes are investigated under atmospheric pressure. Two reactions, namely, methane formation, C3H8→2 CH4+C, and decomposition, C3H8→3C+4H2, took place over the analyzed metal supported catalysts. The highest activity is measured for Ni/SiO2, revealing 100% conversion and over 90% selectivity for methanation at 500° C. As far as the activities of other metal supports are concerned, the order is found to be Ni»Co>Fe> Pt>Pd. Butanes show 95~99 % conversion and 80% selectivity over Ni/SiO2 at 500°C. Adopting the condition of less than 2, 700h-1 is found suitable for selective CH4 formation. Supplying the feed of C3 H8/H2=0.5, only hydrogenolysis of propane takes place over Ni/SiO2 above 250°C, and the conversion reachs 90% and 100% at 350°C and 500°C, respectively.

Original languageEnglish
Pages (from-to)316-321
Number of pages6
Journalkagaku kogaku ronbunshu
Volume25
Issue number2
DOIs
Publication statusPublished - Jan 1 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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