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论文类型：期刊论文

发表时间：2011-01-01

发表刊物：CATALYSIS LETTERS

收录刊物：SCIE、EI

卷号：141

期号：1

页面范围：207-212

ISSN号：1011-372X

关键字：CH4-SCR; Co-ZSM-5; Silver; DRIFTS; Nitrates

摘要：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 degrees 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.