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High Resistance of SO2 and H2O over Monolithic Mn-Fe-Ce-Al-O Catalyst for Low Temperature NH3-SCR
被引:12
作者:

Hao, Shijie
论文数: 0 引用数: 0
h-index: 0
机构:
Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China

Cai, Yandi
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h-index: 0
机构:
Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China

Sun, Chuanzhi
论文数: 0 引用数: 0
h-index: 0
机构:
Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Peoples R China Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China

Sun, Jingfang
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h-index: 0
机构:
Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China

Tang, Changjin
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h-index: 0
机构:
Nanjing Normal Univ, Sch Environm, Nanjing 210093, Peoples R China Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China

Dong, Lin
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h-index: 0
机构:
Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China
机构:
[1] Nanjing Univ, Sch Environm, Jiangsu Key Lab Vehicle Emiss Control, Nanjing 210093, Peoples R China
[2] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Peoples R China
[3] Nanjing Normal Univ, Sch Environm, Nanjing 210093, Peoples R China
来源:
基金:
中国国家自然科学基金;
国家高技术研究发展计划(863计划);
关键词:
honeycomb catalyst;
Mn-Fe-Ce-Al-O;
low temperature denitration;
water and sulfur resistance;
MNOX-CEO2;
CATALYSTS;
REDUCTION;
NO;
NH3;
OXIDES;
PERFORMANCE;
IRON;
SCR;
MECHANISM;
FE-ZSM-5;
D O I:
10.3390/catal10111329
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Monolithic Mn-Fe-Ce-Al-O catalyst with honeycomb cordierite ceramic as a carrier was reported for the first time for low temperature deNO(x) application. In the reaction of selective catalytic reduction (SCR) of NO with NH3, a NO conversion of above 80% at 100 degrees C was obtained. Notably, the catalyst also showed excellent resistance against SO2 and H2O. About 60% NO conversion was maintained after successive operation in the mixed stream of SO2 and H2O for 168 h. The Brunner-Emmet-Teller (BET) measurement, SEM, EDS, thermogravimetric analysis (TG), FT-IR, and XPS results of the used catalysts indicated that certain amounts of ammonium sulfate was formed on the surface of the catalyst. XPS results revealed that partial of Fe2+ was oxidized to Fe3+ during the reaction process, and Fe2+ species have strong redox ability, which can explain the decrease in activity after reaction. In addition, SO2 and H2O induced a transformation of Ce from Ce4+ to Ce3+ on the surface of the catalyst, which increased the amount of chemisorbed oxygen. Owing to these factors, the addition of Ce and Fe species contributes to excellent resistance of the catalyst to SO2 and H2O.
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页码:1 / 13
页数:13
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