A Novel MnOx Supported Palygorskite SCR Catalyst for Lower Temperature NO Removal from Flue Gases

2011 ◽  
Vol 356-360 ◽  
pp. 974-979 ◽  
Author(s):  
Xian Long Zhang ◽  
Bo Wen Shi ◽  
Xue Ping Wu ◽  
Wei Ping Jiang ◽  
Bao Jun Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Manganese Oxide ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Flue Gases ◽  
Scr Catalyst ◽  
No Removal ◽  
Highly Active ◽  
Lower Temperature ◽  
Scr Of Nox

Palygorskite supported manganese oxide catalysts (MnOx/PG) were prepared for lower temperature selective catalytic reduction (SCR) of NOx by NH3. Catalyst’s SCR activity was estimated at varied temperatures. Catalyst’s properties were characterized by XRD, NH3adsorption and TPD. Results showed that MnOx/PG catalyst was highly active for SCR at low-temperature. It was also found that NH3 was mainly adsorbed on palygorskite in two forms. Weakly adsorbed NH3, which was seldom inhibited by loading of MnOx, but was more favorable to SCR. Whereas strongly adsorbed NH3was more likely to be inhibited by MnOx loading but was inessential for SCR.

scholarly journals Promotional effect of niobium substitution on the low-temperature activity of a WO3/CeZrOxmonolithic catalyst for the selective catalytic reduction of NOxwith NH3

RSC Advances ◽  
2017 ◽  
Vol 7 (75) ◽  
pp. 47570-47582 ◽  
Author(s):  
Haidi Xu ◽  
Qingjin Lin ◽  
Yun Wang ◽  
Li Lan ◽  
Shuang Liu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Promising Candidate ◽  
Scr Catalyst ◽  
Promotional Effect

Optimal WO3substituted by Nb2O5could obviously improve the low-temperature NH3-SCR activity of WO3/Ce0.68Zr0.32O2, and the Nb-substituted catalyst showed excellent SO2and H2O tolerance could be a promising candidate for NH3-SCR catalyst.

Low Temperature Selective Catalytic Reduction of NOx with NH3 over MnOx /TiO2 Catalyst

2013 ◽  
Vol 295-298 ◽  
pp. 364-369 ◽  
Author(s):  
Jun Lin Xie ◽  
Zheng Bing Fu ◽  
Feng He ◽  
De Fang
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Manganese Oxides ◽  
Catalytic Reduction ◽  
Sol Gel ◽  
Soft Template ◽  
Excess Oxygen ◽  
Narrow Slit ◽  
Transport Pathways ◽  
Scr Of Nox

Amorphous phase MnOx/TiO2 catalysts were prepared by two different methods, their catalytic activities for low temperature selective catalytic reduction (SCR) of NOx with NH3 in the presence of excess oxygen were investigated. The catalysts were characterized by XRD, XPS and HRTEM. The results showed that the catalyst prepared by soft template method had better catalytic active than those prepared by sol-gel method, its catalytic property could reach 98.2% at 200°C. From the microstructure characterization, it could be known that the catalyst prepared by soft template had the shape of nanorod, this shape was contributed to the dispersion of the manganese oxides and possessed higher surface lattice oxygen concentration. Furthermore, narrow slit-shaped pores associated with rod-like particles could provide efficient transport pathways to reactant molecules and products. Due to these, the catalyst performed catalytic active very well.

Effect of SO2 on SCR activity of MnOx/PG catalysts at low temperature

2015 ◽  
Vol 69 (12) ◽  
Author(s):  
Xian-Long Zhang ◽  
Shuang-Shuang Lv ◽  
Cui-Ping Zhang ◽  
Xue-Ping Wu ◽  
Lian-Feng Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Manganese Oxide ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Oxide Catalysts ◽  
Manganese Oxide Catalysts ◽  
Scr Of No

AbstractPalygorskite (PG)-supported manganese oxide catalysts (MnOx/PG) were prepared for the selective catalytic reduction (SCR) of NO with ammonia in the presence of SO

Highly efficient removal of NO with ordered mesoporous manganese oxide at low temperature

RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 29353-29361 ◽  
Author(s):  
Sihui Zhan ◽  
Dandan Zhu ◽  
Mingying Qiu ◽  
Hongbing Yu ◽  
Yi Li
Keyword(s):  
Low Temperature ◽  
Manganese Oxide ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Efficient Removal ◽  
Hard Template ◽  
Highly Efficient ◽  
Ordered Mesoporous ◽  
Scr Of No

Highly ordered mesoporous MnO2 was prepared using KIT-6 as a hard template, for selective catalytic reduction (SCR) of NO with NH3 at low temperature, which was characterized using TEM, XRD, BET, XPS, H2-TPR, NH3-TPD and in situ DRIFT.

Low-Temperature Selective Catalytic Reduction (SCR) of NOx with n-Octane Using Solvent-Free Mechanochemically Prepared Ag/Al2O3 Catalysts

ACS Catalysis ◽  
2011 ◽  
Vol 1 (10) ◽  
pp. 1257-1262 ◽  
Author(s):  
Uraiwan Kamolphop ◽  
Sarah. F. R. Taylor ◽  
John P. Breen ◽  
Robbie Burch ◽  
Juan J. Delgado ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Solvent Free ◽  
Scr Of Nox
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