Low-temperature Hydrogen-selective Catalytic Reduction of NOxon Pt/Sulfated-ZrO2Catalysts under Excess Oxygen Conditions

2008 ◽  
Vol 37 (12) ◽  
pp. 1210-1211 ◽  
Author(s):  
Makoto Saito ◽  
Masahiro Itoh ◽  
Jun Iwamoto ◽  
Ken-ichi Machida
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Excess Oxygen ◽  
Oxygen Conditions

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.

scholarly journals Sm-doped manganese-based Zr–Fe polymeric pillared interlayered montmorillonite for low temperature selective catalytic reduction of NOx by NH3 in metallurgical sintering flue gas

RSC Advances ◽  
2018 ◽  
Vol 8 (73) ◽  
pp. 42017-42024 ◽  
Author(s):  
Zhicheng Han ◽  
Qingbo Yu ◽  
Zhijia Xue ◽  
Kaijie Liu ◽  
Qin Qin
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Flue Gas ◽  
Trace Amount ◽  
Catalytic Reduction ◽  
Excess Oxygen ◽  
Reduction Of Nox ◽  
Metallurgical Sintering Flue Gas

Trace amount of Sm-doped Mn-based Zr–Fe polymeric pillared interlayered montmorillonite promotes low temperature catalytic activity in excess oxygen.

Selective Catalytic Reduction of NOX on Cr-Mn Mixed Oxide at Low Temperature

2011 ◽  
Vol 233-235 ◽  
pp. 1564-1567
Author(s):  
Zhi Hang Chen ◽  
Xue Hui Li ◽  
Chao Ping Cen ◽  
Xiang Gao ◽  
Le Fu Wang
Keyword(s):  
Citric Acid ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Mixed Oxide ◽  
Mixed Oxides ◽  
Catalytic Reduction ◽  
Space Velocity ◽  
Excess Oxygen ◽  
Mixed Oxide Catalysts ◽  
Acid Method

The solid state reaction method, coprecipitation method and citric acid method were employed for the preparation of Cr-Mn mixed-oxide catalysts. Experimental results showed that this catalytic system has good selective catalytic reduction (SCR) properties of NOxby ammonia in the presence of excess oxygen at low temperature (80-220°C). 97.8% conversion of NOxwith 100% selectivity of N2had been achieved on Cr-MnOxmixed oxide prepared by the citric acid method at 120°C with the space velocity of 30,000 h-1. X-ray diffraction, BET were adopted for the characterization of the active phase. The characterization results showed that a new crystal phase CrMn1.5O4generated in mixed oxides which was the active center of the Cr-Mn catalysts.

scholarly journals Mn/SAPO-34 as an efficient catalyst for the low-temperature selective catalytic reduction of NOx with NH3

RSC Advances ◽  
2017 ◽  
Vol 7 (51) ◽  
pp. 32146-32154 ◽  
Author(s):  
Chengkai Pang ◽  
Yuqun Zhuo ◽  
Qiyu Weng
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Excess Oxygen ◽  
Efficient Catalyst ◽  
Scr Of No ◽  
Reduction Of Nox

A series of Mn-exchanged SAPO-34 catalysts were synthesized and developed as catalysts for the low temperature selective catalytic reduction (SCR) of NO with ammonia in the presence of excess oxygen.

Effect of Fe on the Selective Catalytic Reduction of NO by NH3 at Low Temperature over Mn/CeO2-TiO2 Catalyst

2012 ◽  
Vol 27 (5) ◽  
pp. 495-500 ◽  
Author(s):  
Da-Wang WU ◽  
Qiu-Lin ZHANG ◽  
Tao LIN ◽  
Mao-Chu GONG ◽  
Yao-Qiang CHEN
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Reduction Of No
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