Remarkable enhancement in durability of Pd/H-ZSM-5 zeolite catalysts for CH4-SCR

Masaru Ogura, Susumu Kage, Masayoshi Hayashi, Masahiko Matsukata, Eiichi Kikuchi

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Effect of second components on the catalytic performance of Pd/H-ZSM-5 zeolite.(Pd: 0.4 wt.%) was evaluated by a durability test of NO reduction with CH4 at a relatively high temperature of 500°C in the presence of water vapor for a prolonged period. The Pd/H-ZSM-5 showed high stable activity for this reaction without H2O in the reactant feed, while immediate and irreversible deactivation was observed in the presence of H2O, resulting in no activity after 7 h. The second components such as Co, Rh, Ag, Ce, and Fe introduced individually to the Pd/H-ZSM-5 enhanced the durability, and in particular the addition of 3.3 wt.% Co led to a stable NO conversion for more than 40 h in the presence of H2O. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)L213-L216
JournalApplied Catalysis B: Environmental
Volume27
Issue number4
DOIs
Publication statusPublished - 2000 Aug 28

Keywords

  • CH-SCR
  • Co/Pd/H-ZSM-5
  • Durability
  • Pd/H-ZSM-5

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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