期刊
CATALYSIS LETTERS
卷 141, 期 1, 页码 207-212出版社
SPRINGER
DOI: 10.1007/s10562-010-0435-8
关键词
CH4-SCR; Co-ZSM-5; Silver; DRIFTS; Nitrates
资金
- National Natural Science Foundation of China [20573014, 20673016]
- Program for New Century Excellent Talents in University [NCET-07-0136]
- National High Technology and Development Program (863 program) of China [2007AA06Z311]
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.
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