Enhanced low-temperature activity of Ag-promoted Co-ZSM-5 for the CH 4-SCR of NO

Xiaomei Chen, Aimin Zhu, Chak Tong AU, Chuan Shi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Ag-promoted Co-ZSM-5 catalyst was prepared and tested for the selective catalytic reduction of NO with methane. The low-temperature activity and water-resistant ability of the promoted catalyst were markedly improved in comparison to Co-ZSM-5. The NO conversion was about 100% in the temperature range of 350-550 °C at a space velocity of 6,000 h-1 and nearly 60% in the presence of 2% water steam. The results showed that with Ag presence, the redox nature of cobalt species changed. The improvement of low-temperature activity and water-resistance of catalyst is attributed to the suppression of methane combustion and the formation of surface nitrate species.

Original languageEnglish
Pages (from-to)207-212
Number of pages6
JournalCatalysis Letters
Volume141
Issue number1
DOIs
Publication statusPublished - Jan 2011

Scopus Subject Areas

  • Catalysis
  • Chemistry(all)

User-Defined Keywords

  • CH-SCR
  • Co-ZSM-5
  • DRIFTS
  • Nitrates
  • Silver

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