Synthesis, characterization and catalytic performances of Cu- and Mn-containing ordered mesoporous carbons for the selective catalytic reduction of NO with NH3

2015 ◽  
Vol 5 (2) ◽  
pp. 1267-1279 ◽  
Author(s):  
Feifei Cao ◽  
Jinghuan Chen ◽  
Changlei Lyu ◽  
Mingjiang Ni ◽  
Xiang Gao ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Effect ◽  
Catalytic Reduction ◽  
Mesoporous Carbons ◽  
Ordered Mesoporous Carbons ◽  
Reduction Of No ◽  
No Conversion ◽  
Ordered Mesoporous ◽  
Catalytic Performances

The synergetic catalytic effect of Cu and Mn for CuxMny-OMCs catalysts on NO conversion with NH3.

A Ce-Zr-Ti Oxide Catalyst for Selective Catalytic Reduction of NO with Ammonia

2014 ◽  
Vol 535 ◽  
pp. 709-712
Author(s):  
Ye Jiang ◽  
Yan Yan ◽  
Shan Bo Huang ◽  
Xiong Zhang ◽  
Xin Wei Wang ◽  
...  
Keyword(s):  
High Activity ◽  
Selective Catalytic Reduction ◽  
Oxide Catalyst ◽  
Catalytic Reduction ◽  
Space Velocity ◽  
Impregnation Method ◽  
Reduction Of No ◽  
No Conversion ◽  
Temperature Range ◽  
Ti Oxides

A Ce-Zr-Ti oxide catalyst was prepared by an impregnation method and tested for the selective catalytic reduction of NO with NH3. The Ce-Zr-Ti oxide catalyst exhibited high activity and more than 95% NO conversion was obtained within the temperature range 300-500 °C at the high gas hourly space velocity of 50,000 h-1. The addition of Zr improved the activity of Ce-Ti oxides especially at higher reaction temperatures and their resistance to SO2.

Highly dispersed Fe2O3 on carbon nanotubes for low-temperature selective catalytic reduction of NO with NH3

2015 ◽  
Vol 51 (5) ◽  
pp. 956-958 ◽  
Author(s):  
Zhenping Qu ◽  
Lei Miao ◽  
Hui Wang ◽  
Qiang Fu
Keyword(s):  
Carbon Nanotubes ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Low Temperatures ◽  
Catalytic Reduction ◽  
Reduction Of No ◽  
No Conversion ◽  
Highly Dispersed

Highly dispersed Fe2O3 nanoparticles supported on CNTs showed excellent NO conversion, selectivity and durability towards SO2/H2O at low temperatures (200–325 °C).

scholarly journals Physicochemical and Catalytic Properties of Vanadia/Titania Catalysts. V. Selective Catalytic Reduction of NO with NH3

2002 ◽  
Vol 20 (10) ◽  
pp. 937-945
Author(s):  
Th. El-Nabarawy ◽  
M.N. Alaya ◽  
S.A. Sayed Ahmed ◽  
A.M. Youssef
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Properties ◽  
Catalytic Reduction ◽  
Impregnation Method ◽  
Reduction Of No ◽  
No Conversion ◽  
Scr Of No ◽  
Monolayer Coverage

Vanadia/titania catalysts were prepared containing 6.0 or 8.0 wt% V2O5 via the impregnation method. The samples as prepared were calcined at 400°C or 600°C, respectively. Selective catalytic reduction (SCR) of NO with NH3 was carried out at 257°C over the prepared catalysts. NO conversion as a function of time was followed and the stationary conversion versus the amount of catalyst employed was also investigated. It was found that the vanadia/titania catalysts calcined at 400°C were more active in the SCR of NO with NH3 relative to those calcined at 600°C. This was attributed to such catalysts possessing complete monolayer coverage of vanadia on the titania substrate. It was established that V5+ was not the active vanadia species but V4+ and V3+ may act as such for the SCR of NO with NH3.

scholarly journals Enhancing the low temperature NH3-SCR activity of FeTiOx catalysts via Cu doping: a combination of experimental and theoretical study

RSC Advances ◽  
2018 ◽  
Vol 8 (34) ◽  
pp. 19301-19309 ◽  
Author(s):  
Kai Cheng ◽  
Weiyu Song ◽  
Ying Cheng ◽  
Huiling Zheng ◽  
Lu Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Theoretical Study ◽  
Catalytic Reduction ◽  
Sol Gel ◽  
Cu Doping ◽  
Reduction Of No ◽  
Gel Method ◽  
Nh3 Scr ◽  
Catalytic Performances

A series of FeαCu1−αTiOx catalysts with variable Cu doping amounts was directly synthesized by the sol–gel method and their catalytic performances were tested for the selective catalytic reduction of NO with ammonia.

scholarly journals Influence of the nature and environment of manganese in Mn-BEA zeolites on NO conversion in selective catalytic reduction with ammonia

2017 ◽  
Vol 19 (21) ◽  
pp. 13553-13561 ◽  
Author(s):  
R. Baran ◽  
L. Valentin ◽  
J.-M. Krafft ◽  
T. Grzybek ◽  
P. Glatzel ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Synthesis Method ◽  
Reduction Of No ◽  
No Conversion ◽  
Post Synthesis

Manganese-containing BEA zeolites, MnxSiBEA (x = 1–4 wt%) and Mn(I.E.)AlBEA, were prepared by a two-step post-synthesis method and a conventional wet ion-exchange, respectively, and applied as catalysts in the selective catalytic reduction of NO with ammonia (NH3-SCR).

Ammonia selective catalytic reduction of NO over Ce–Fe/Cu–SSZ-13 catalysts

RSC Advances ◽  
2015 ◽  
Vol 5 (104) ◽  
pp. 85453-85459 ◽  
Author(s):  
Xiaojiao Liu ◽  
Yonghong Li ◽  
Ranran Zhang
Keyword(s):  
Catalytic Activity ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Reduction Of No ◽  
No Conversion ◽  
Operation Temperature ◽  
Temperature Window

Ce0.017–Fe0.017/Cu–SSZ-13 showed the best catalytic activity in a wider operation temperature window from 150 to 550 °C. The NO conversion over Ce0.017–Fe0.017/Cu–SSZ-13 was more than 90% between 200 and 500 °C.

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