scholarly journals Insight into the synergism between MnO2 and acid sites over Mn–SiO2@TiO2 nano-cups for low-temperature selective catalytic reduction of NO with NH3

RSC Advances ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 1979-1986 ◽  
Author(s):  
Siyi Zheng ◽  
Lei Song ◽  
Siyang Tang ◽  
Changjun Liu ◽  
Hairong Yue ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Acid Sites ◽  
Reduction Of No ◽  
Low Temperature Scr ◽  
Insight Into

A novel Mn–SiO2@TiO2 nano-cup catalyst with synergy of MnO2 and acid sites for efficient low-temperature SCR reaction.

Fe and Mn mixed oxide catalysts supported on Sn-modified TiO2 for the selective catalytic reduction of NO with NH3 at low temperature

2022 ◽  
Author(s):  
Zhitao Han ◽  
Huan Du ◽  
Duo Xu ◽  
Yu Gao ◽  
Shaolong Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Mixed Oxide ◽  
Catalytic Reduction ◽  
Oxide Catalysts ◽  
Reduction Of No ◽  
Sn Doping ◽  
Mixed Oxide Catalysts ◽  
Fe And Mn ◽  
Low Temperature Scr

FeMn/SnxTiO2 catalysts were synthesized by introducing Sn as an additive to modify TiO2 supports, and the Sn doping could improve the SO2 tolerance and low-temperature SCR activity significantly.

Exposed metal oxide active sites on mesoporous titania channels: a promising design for low-temperature selective catalytic reduction of NO with NH3

2018 ◽  
Vol 54 (30) ◽  
pp. 3783-3786 ◽  
Author(s):  
Jianwei Fan ◽  
Menghua Lv ◽  
Wei Luo ◽  
Xianqiang Ran ◽  
Yonghui Deng ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metal Oxide ◽  
Selective Catalytic Reduction ◽  
Active Sites ◽  
Catalytic Reduction ◽  
Mesoporous Titania ◽  
Active Centers ◽  
Reduction Of No ◽  
Low Temperature Scr

A subtle catalyst is designed with CuO and MnO2 active centers on the surface of mesoporous titania for low-temperature SCR.

V2O5-WO3/TiO2 Catalysts for Low Temperature NH3 SCR: Catalytic Activity and Characterization

2016 ◽  
Vol 697 ◽  
pp. 275-278 ◽  
Author(s):  
Yu Xin Deng ◽  
Xin Chen ◽  
Rong Shao ◽  
Li Ming Hu ◽  
Jie Tang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Surface Area ◽  
Catalytic Reduction ◽  
Anatase Phase ◽  
Systematic Investigation ◽  
Acid Sites ◽  
Bet Surface Area ◽  
Reduction Of No

A systematic investigation of the effect of WO3 loading over V2O5/TiO2 catalysts was carried out for the selective catalytic reduction of NO by NH3. The characteristics were examined use BET surface area , X-ray diffractometry (XRD) , Temperature programmed desorption (TPD) of NH3 . It was fund that the WO3 species could interact with the TiO2 anatase phase to exhibits a high activity. With increasing WO3 content ,the activity of V-W/TiO2 for the selective catalytic reduction of NO by NH3 was improved at low temperatures in the range of 3～7%. The results showed that the adding of WO3 to V2O5/TiO2 could result in exposing acid sites of catalysts doped WO3 at low temperature. Furthermore, especially the catalytic activity of VW7Ti showed higher than 80% at 180 °C. However, the catalytic BET surface area and the mass of acid sites not play a leading role for improving low-temperature activity of VWTi in this paper.

New insight into the promotion effect of Cu doped V2O5/WO3–TiO2 for low temperature NH3-SCR performance

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 35155-35165 ◽  
Author(s):  
Meiqing Shen ◽  
Chenxu Li ◽  
Jianqiang Wang ◽  
Lili Xu ◽  
Wulin Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Promotion Effect ◽  
Reduction Of No ◽  
Temperature Range ◽  
Nh3 Scr ◽  
Insight Into

The promotion effect of Cu on the V/WTi catalyst for the selective catalytic reduction of NOx by NH3 was investigated in the temperature range of 150–400 °C.

Deep insight into the structure–activity relationship of Nb modified SnO2–CeO2 catalysts for low-temperature selective catalytic reduction of NO by NH3

2017 ◽  
Vol 7 (2) ◽  
pp. 502-514 ◽  
Author(s):  
Lijun Yan ◽  
Yangyang Liu ◽  
Kaiwen Zha ◽  
Hongrui Li ◽  
Liyi Shi ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Deep Insight ◽  
Reduction Of No ◽  
Structure Activity ◽  
Relationship Of ◽  
Insight Into

The structure–activity relationship of Nb modified SnO2–CeO2 catalysts was investigated for selective catalytic reduction of NO by NH3.

scholarly journals SO2Poisoning Behaviors of Ca-Mn/TiO2Catalysts for Selective Catalytic Reduction of NO with NH3at Low Temperature

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Qingqing Tian ◽  
Hongfeng Liu ◽  
Weiyuan Yao ◽  
Yan Wang ◽  
Yue Liu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Analytical Techniques ◽  
Active Phase ◽  
Experimental Results ◽  
Sulfur Tolerance ◽  
Reduction Of No ◽  
Low Temperature Scr

The sulfur tolerance of Ca modifiedMnOx/TiO2catalysts in low-temperature SCR process was investigated. Experimental results revealed that the durability of developed catalysts in the presence of SO2could be improved by Ca modification. After being subjected to a range of analytical techniques, it was found that the surface Ca species could act as a SO2trap by preferentially reacting with SO2to form bulk-like CaSO4, inhibiting the sulfation of active phase. Furthermore, the introduction of SO2had also preserved part of Lewis sites over theMnOx.Both of these are conducive to NH3adsorption and activation at low temperature, hence improving the sulfur tolerance of Ca doped catalysts.

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

A Green CeO 2 −WO 3 /TiO 2 Medium‐Low Temperature de‐NO x Catalyst for Selective Catalytic Reduction of NO x with NH 3

2021 ◽  
Vol 6 (22) ◽  
pp. 5586-5596
Author(s):  
Zihao Fu ◽  
Guodong Zhang ◽  
Zhicheng Tang ◽  
Haitao Zhang
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Reduction Of No

Mechanistic insight into the influence of O2 on N2O formation in the selective catalytic reduction of NO with NH3 over Pd/CeO2 catalyst

2021 ◽  
Author(s):  
Liping Sheng ◽  
Songda Li ◽  
Zhaoxia Ma ◽  
Fei Wang ◽  
Hu He ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
No Reduction ◽  
Catalytic Reduction ◽  
Temperature Dependent ◽  
N2o Formation ◽  
Reduction Of No ◽  
Mechanistic Insight ◽  
Insight Into

O2 greatly affected the pathway for NO reduction over the Pd/CeO2 catalyst and resulted in a temperature-dependent NH3-SCR performance and formation of N2O.

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