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.

Mechanistic insight into the methanol selective catalytic reduction of NO reaction over Cu-containing perovskites

2019 ◽  
Vol 377 ◽  
pp. 480-493 ◽  
Author(s):  
Hao Wang ◽  
Runduo Zhang ◽  
Peixin Li ◽  
Sébastien Royer ◽  
Jean-Philippe Dacquin
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Reduction Of No ◽  
Mechanistic Insight ◽  
Insight Into

Mechanistic insight into the selective catalytic reduction of NO by NH3 over low-valent titanium-porphyrin: a DFT study

2016 ◽  
Vol 6 (11) ◽  
pp. 3878-3885 ◽  
Author(s):  
Phornphimon Maitarad ◽  
Jittima Meeprasert ◽  
Liyi Shi ◽  
Jumras Limtrakul ◽  
Dengsong Zhang ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Theoretical Study ◽  
Catalytic Reduction ◽  
Dft Study ◽  
Reduction Of No ◽  
Mechanistic Insight ◽  
Scr Of No ◽  
Low Valent ◽  
Insight Into

The theoretical study shows that Ti-porphyrin has potential as an alternative catalyst for NH3-SCR of NO.

Suppression of N2O formation by H2O and SO2 in the selective catalytic reduction of NO with NH3 over a Mn/Ti–Si catalyst

2019 ◽  
Vol 9 (17) ◽  
pp. 4759-4770 ◽  
Author(s):  
Bolin Zhang ◽  
Michael Liebau ◽  
Wladimir Suprun ◽  
Bo Liu ◽  
Shengen Zhang ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Lewis Acid ◽  
No Reduction ◽  
Catalytic Reduction ◽  
Acid Sites ◽  
Lewis Acid Sites ◽  
N2o Formation ◽  
Brønsted Acid Sites ◽  
Reduction Of No ◽  
Suppression Effects

Proposed mechanism of NO reduction and N2O formation as well as H2O/SO2 suppression effects with participation of (a) Lewis acid sites and (b) Brønsted acid sites over a Mn/Ti–Si catalyst.

Mechanistic insight into the selective catalytic reduction of NO by NH3 over α-Fe2O3 (001): a density functional theory study

2019 ◽  
Vol 9 (1) ◽  
pp. 116-124 ◽  
Author(s):  
Qilong Fang ◽  
Baozhong Zhu ◽  
Yunlan Sun ◽  
Zicheng Zhu ◽  
Minggao Xu ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Selective Catalytic Reduction ◽  
Density Functional ◽  
Catalytic Reduction ◽  
Adsorption Properties ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Reduction Of No ◽  
Mechanistic Insight ◽  
Insight Into

The adsorption properties and the selective catalytic reduction mechanism of NO, NH3 and O2 molecules over the α-Fe2O3 (001) surface were studied by density functional theory.

scholarly journals Insights into the promotion role of phosphorus doping on carbon as a metal-free catalyst for low-temperature selective catalytic reduction of NO with NH3

RSC Advances ◽  
2020 ◽  
Vol 10 (22) ◽  
pp. 12908-12919
Author(s):  
Weifeng Li ◽  
Shuangling Jin ◽  
Rui Zhang ◽  
Yabin Wei ◽  
Jiangcan Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
No Reduction ◽  
Catalytic Reduction ◽  
Carbon Aerogels ◽  
Phosphorus Doping ◽  
Reduction Of No ◽  
Metal Free

P species can effectively enhance the catalytic activity of carbon aerogels for NO reduction at low temperature.

scholarly journals Mechanistic insight into N2O formation during NO reduction by NH3 over Pd/CeO2 catalyst in the absence of O2

2019 ◽  
Vol 40 (7) ◽  
pp. 1070-1077 ◽  
Author(s):  
Liping Sheng ◽  
Zhaoxia Ma ◽  
Shiyuan Chen ◽  
Jinze Lou ◽  
Chengye Li ◽  
...  
Keyword(s):  
No Reduction ◽  
N2o Formation ◽  
Mechanistic Insight ◽  
Insight Into

Synergetic Effects between Al2O3 and HZSM-5 for NO Reduction by CH4

2011 ◽  
Vol 214 ◽  
pp. 364-368
Author(s):  
Li Li Ren ◽  
Xiao Mei Pan
Keyword(s):  
Catalytic Activity ◽  
Selective Catalytic Reduction ◽  
No Reduction ◽  
Catalytic Reduction ◽  
Synergetic Effect ◽  
Separate Component ◽  
Reduction Of No ◽  
Synergetic Effects

Three different kinds of Al2O3 have been added to HZSM-5 for improving its activity towards selective catalytic reduction of NO with CH4 in the presence of excess of oxygen. Higher conversions of NO have been observed for all of the three mixed catalysts, the conversion of which were also found to be higher than that of each separate component of the catalysts. It was concluded that there exists a synergetic effect between Al2O3 and HZSM-5. The addition of Al2O3 can improve the catalytic activity of HZSM-5 by inhibiting the decomposing of NO2 to NO and accelerating the activation of methane. Adsorbed NO2 is then reduced by the activated methane or the intermediates formed from activated methane to N2 over the Brønsted site of zeolite.

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