Hybrid selective noncatalytic reduction (SNCR)/selective catalytic reduction (SCR) for NOx removal using low-temperature SCR with Mn-V2O5/TiO2 catalyst

2015 ◽  
Vol 65 (4) ◽  
pp. 485-491 ◽  
Author(s):  
Sung-Woo Choi ◽  
Sang-Ki Choi ◽  
Hun-Kyun Bae
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Nox Removal ◽  
Tio2 Catalyst ◽  
Selective Noncatalytic Reduction ◽  
Low Temperature Scr ◽  
Noncatalytic Reduction

scholarly journals Sulfation effect of Ce/TiO2 catalyst for the selective catalytic reduction of NOx with NH3: mechanism and kinetic studies

RSC Advances ◽  
2019 ◽  
Vol 9 (55) ◽  
pp. 32110-32120 ◽  
Author(s):  
Wenjie Zhang ◽  
Guofu Liu ◽  
Jie Jiang ◽  
Yuchen Tan ◽  
Qi Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Reaction Rate ◽  
Catalytic Reduction ◽  
Kinetic Studies ◽  
Tio2 Catalyst ◽  
Reduction Of Nox ◽  
Low Temperature Scr

After sulfation treatment, low-temperature SCR activity is severely inhibited due to the much lower reaction rate of E–R 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.

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.

In situ IR studies of Co and Ce doped Mn/TiO2 catalyst for low-temperature selective catalytic reduction of NO with NH3

2015 ◽  
Vol 357 ◽  
pp. 189-196 ◽  
Author(s):  
Lu Qiu ◽  
Dandan Pang ◽  
Changliang Zhang ◽  
Jiaojiao Meng ◽  
Rongshu Zhu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Reduction Of No ◽  
Tio2 Catalyst ◽  
Ir Studies ◽  
In Situ Ir

The poisoning effect of PbO on Mn-Ce/TiO2 catalyst for selective catalytic reduction of NO with NH3 at low temperature

2016 ◽  
Vol 389 ◽  
pp. 532-539 ◽  
Author(s):  
Lingling Zhou ◽  
Caiting Li ◽  
Lingkui Zhao ◽  
Guangming Zeng ◽  
Lei Gao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Reduction Of No ◽  
Tio2 Catalyst ◽  
Poisoning Effect

scholarly journals Plasma-Assisted Selective Catalytic Reduction for Low-Temperature Removal of NOx and Soot Simulant

Catalysts ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 853 ◽  
Author(s):  
Van Toan Nguyen ◽  
Duc Ba Nguyen ◽  
Iljeong Heo ◽  
Young Sun Mok
Keyword(s):  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
High Efficiency ◽  
Catalytic Reduction ◽  
Hydrocarbon Fuel ◽  
Nox Removal ◽  
Barrier Discharge Plasma ◽  
Specific Input Energy ◽  
Operating Temperatures ◽  
Α Al2o3

The challenge that needs to be overcome regarding the removal of nitrogen oxides (NOx) and soot from exhaust gases is the low activity of the selective catalytic reduction of NOx at temperatures fluctuating from 150 to 350 °C. The primary goal of this work was to enhance the conversion of NOx and soot simulant by employing a Ag/α-Al2O3 catalyst coupled with dielectric barrier discharge plasma. The results demonstrated that the use of a plasma-catalyst process at low operating temperatures increased the removal of both NOx and naphthalene (soot simulant). Moreover, the soot simulant functioned as a reducing agent for NOx removal, but with low NOx conversion. The high efficiency of NOx removal required the addition of hydrocarbon fuel. In summary, the combined use of the catalyst and plasma (specific input energy, SIE ≥ 60 J/L) solved the poor removal of NOx and soot at low operating temperatures or during temperature fluctuations in the range of 150–350 °C. Specifically, highly efficient naphthalene removal was achieved with low-temperature adsorption on the catalyst followed by the complete decomposition by the plasma-catalyst at 350 °C and SIE of 90 J/L.

Sign in / Sign up

Export Citation Format

Share Document