Facile preparation of MnO2 doped Fe2O3 hollow nanofibers for low temperature SCR of NO with NH3

2014 ◽  
Vol 2 (48) ◽  
pp. 20486-20493 ◽  
Author(s):  
Sihui Zhan ◽  
Mingying Qiu ◽  
Shanshan Yang ◽  
Dandan Zhu ◽  
Hongbing Yu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Hollow Nanofibers ◽  
Scr Of No ◽  
Electrospinning Method ◽  
Facile Preparation ◽  
Low Temperature Scr

MnO2 doped Fe2O3 hollow nanofibers were successfully synthesized by the electrospinning method, which exhibit superior catalytic activity for low temperature NH3-SCR.

Effect of Cerium on Manganese Base Catalysts by Co-Precipitation for Low-Temperature SCR of NO with NH3

2014 ◽  
Vol 633 ◽  
pp. 121-124 ◽  
Author(s):  
Liang Jing Zhang ◽  
Su Ping Cui ◽  
Hong Xia Guo ◽  
Xiao Yu Ma ◽  
Xiao Gen Luo
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Precipitation Method ◽  
Base Catalysts ◽  
Nox Conversion ◽  
Scr Of No ◽  
Co Precipitation ◽  
Low Temperature Scr

Catalysts of Mn/TiO2 and Mn-Ce /TiO2 prepared by co-precipitation method for low temperature selective catalytic reduction (SCR) of NO with NH3 were investigated in this study. The experimental results showed that co-precipitation method after improvement, the NO conversion of Mn-Ce/TiO2 catalyst increased sharply. Meanwhile, the addition of cerium has significant effects on the catalytic activity. Characterizations of catalysts were carried out by XRD, BET and H2-TPR. The characterized results indicated that co-precipitation method after improvement, in temperature windows 150 to 300 °C, showed higher NOx conversion.

Advanced MnOx/TiO2 Catalyst with Preferentially Exposed Anatase {001} Facet for Low-Temperature SCR of NO

ACS Catalysis ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 5807-5815 ◽  
Author(s):  
Shengcai Deng ◽  
Tingting Meng ◽  
Bolian Xu ◽  
Fei Gao ◽  
Yuanhua Ding ◽  
...  
Keyword(s):  
Low Temperature ◽  
Tio2 Catalyst ◽  
Scr Of No ◽  
Low Temperature Scr

Microstructure of Porous V2O-CeO2-SiO2 Catalyst for SCR of NO with NH3 at Low Temperature

2014 ◽  
Vol 875-877 ◽  
pp. 213-217 ◽  
Author(s):  
Mohd Razali Sohot ◽  
Umi Sarah Jais ◽  
Muhd Rosli Sulaiman
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Catalytic Reduction ◽  
Sol Gel ◽  
Reduction Process ◽  
No Emission ◽  
Scr Of No ◽  
Before And After ◽  
The Right ◽  
Proven Method

Selective catalytic reduction (SCR) is a well-proven method to reduce NO emission. However, to choose the right catalyst that provides a surface for reaction between NO and ammonia at low temperatures is a challenging task for a catalysts developers. In an earlier study, we prepared V2O5-CeO2-SiO2 catalyst with increasing V2O5 content by sol-gel route and found that the catalytic activity improved with increasing the V2O5 loading up to 0.5%. The catalytic activity, however, dropped when V2O5 loading was about 1% and increased back when the loading of V2O5 was about 5%. In this study, we looked into the microstructural relationship to explain these findings. The microstructures of the catalysts before and after exposure to NO gas revealed that the catalysts with 0.2% and 0.5% V2O5 were more porous after the reduction process possibly due to improved breakdown of (NH4)HCO3 to NH3 by the possible interaction with the V2O5 and CeO2-containing catalysts which consequently resulted in a more efficient NO reduction to N2 and H2O at low temperature. The microstructure of the catalyst with 1% V2O5 content to 5%, improved back the efficiency although clogging by CeVO4 phase still possible due to its presence based on XRD. The well-ordered micropores before exposure to NO and the more efficient breakdown of (NH4)HCO3 could have contributed to increase back the catalytic activity at low temperature.

The promotion effect of Fe on CeZr2O x catalyst for the low-temperature SCR of NO x by NH3

2018 ◽  
Vol 44 (5) ◽  
pp. 3455-3474 ◽  
Author(s):  
Xiao Sun ◽  
Rui-tang Guo ◽  
Ming-yuan Li ◽  
Peng Sun ◽  
Wei-guo Pan ◽  
...  
Keyword(s):  
Low Temperature ◽  
Promotion Effect ◽  
Scr Of No ◽  
Low Temperature Scr

Performance of Low‐temperature SCR of NO with NH 3 over MnO x /Ti‐based catalysts

2019 ◽  
Vol 97 (S1) ◽  
pp. 1407-1417 ◽  
Author(s):  
Yanqing Niu ◽  
Xiaolu Zhang ◽  
Hao Zhang ◽  
Yang Liang ◽  
Shuaifei Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Scr Of No ◽  
Low Temperature Scr

The low-temperature SCR of NO over rice straw and sewage sludge derived char

2010 ◽  
Vol 156 (2) ◽  
pp. 321-327 ◽  
Author(s):  
Jin Sun Cha ◽  
Jong-Cheol Choi ◽  
Jeong Huy Ko ◽  
Young-Kwon Park ◽  
Sung Hoon Park ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Low Temperature ◽  
Rice Straw ◽  
Scr Of No ◽  
Low Temperature Scr
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