Decomposition of methane and its reaction with CO 2 over Rh/ZSM-5 catalyst

F. Solymosi, A. Szőke, L. Egri

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

0The decomposition of methane, its conversion into higher hydrocarbons and reaction with CO 2 over Rh/ZSM-5 catalyst have been studied in a fixed bed continuous-flow reactor. Methane decomposed on Rh/ZSM-5 above 523 K to produce hydrogen, surface carbon and a small amount of ethane. No benzene or ethylene formation was detected even at 873-973 K. The addition of CH 4 to CO 2 promoted the dissociation of CO 2 . The surface carbon exhibited less reactivity toward CO 2 . The reaction between CH 4 and CO 2 occurred rapidly above 673 K to give CO and H 2 with a ratio of 1.3:1 to 1.6:1. Little carbon deposited during the reaction, attributed to the facile reactions between CH x and CO 2 . However, addition of more than 4-5% ethane to the reacting gas mixture resulted in a significant amount of carbon deposition and in catalyst deactivation. The extent of deactivation can be decreased by using a large excess of CO 2 .

Original languageEnglish
Pages (from-to)249-257
Number of pages9
JournalTopics in Catalysis
Volume8
Issue number3-4
Publication statusPublished - Jan 1 1999

Keywords

  • Decomposition of methane
  • Dry reforming of methane
  • Effects of ethane
  • Reactivity of surface carbon
  • Rh/ZSM-5 catalyst

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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