Promoting effect of calcium doping on the performances of MnOx/TiO2 catalysts for NO reduction with NH3 at low temperature

2013 ◽  
Vol 129 ◽  
pp. 30-38 ◽  
Author(s):  
Tingting Gu ◽  
Ruiben Jin ◽  
Yue Liu ◽  
Hongfeng Liu ◽  
Xiaole Weng ◽  
...  
Keyword(s):  
Low Temperature ◽  
No Reduction ◽  
Promoting Effect ◽  
Catalysts For No Reduction ◽  
Calcium Doping

Treatment induced remarkable enhancement of low-temperature activity and selectivity of copper-based catalysts for NO reduction

2013 ◽  
Vol 3 (6) ◽  
pp. 1547 ◽  
Author(s):  
Chengyan Ge ◽  
Lianjun Liu ◽  
Xiaojiang Yao ◽  
Changjin Tang ◽  
Fei Gao ◽  
...  
Keyword(s):  
Low Temperature ◽  
No Reduction ◽  
Catalysts For No Reduction

Poisoning effect of SO2 on Mn-Ce/TiO2 catalysts for NO reduction by NH3 at low temperature

2016 ◽  
Vol 44 (2) ◽  
pp. 232-238 ◽  
Author(s):  
Dong-jie YAN ◽  
Ya YU ◽  
Xue-min HUANG ◽  
Shu-jun LIU ◽  
Ying-hui LIU
Keyword(s):  
Low Temperature ◽  
No Reduction ◽  
Poisoning Effect ◽  
Catalysts For No Reduction

scholarly journals Influence of Copper on the Catalytic Activity of Supported Rhodium Catalysts in the Reactions of CO Oxidation and NO Reduction

2017 ◽  
Vol 4 (4) ◽  
pp. 265
Author(s):  
L.A. Petrov ◽  
J. Soria ◽  
R. Cataluna
Keyword(s):  
Catalytic Activity ◽  
Thermal Treatment ◽  
Low Temperature ◽  
Co Oxidation ◽  
No Reduction ◽  
Promoting Effect ◽  
Catalytic Activities ◽  
Cu Catalysts ◽  
Temperature Programmed ◽  
Positive Effect

<p>The catalytic activity of Cu, Rh, and Rh/Cu, catalysts supported on Al<sub>2</sub>O<sub>3</sub>, CeO<sub>2</sub> and CeO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> in reactions of CO oxidation and NO reduction has been studied in temperature-programmed regime. Addition of Cu to Rh catalysts decreases temperature at which 5 and 50% degree of conversion, while end of reaction temperature is not influenced by presence of Cu. The presence of Cu has positive effect on the activity of Rh containing catalysts in the low temperature region. Cu has noticeable promoting effect mainly for the catalytic activity in the reaction of CO oxidation and in smaller extent for the reaction of NO reduction. Preliminary redox treatment of the catalysts decreases the light off temperature in the reactions of CO oxidation and in NO reduction. Thermal treatment at temperatures up to 973 K does not have sensible effect on the catalytic activities of all studied catalysts. Calcination at 1073 K, however, strongly decreases the catalytic activity of Rh/Cu/CeO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> catalysts.</p>

The Effect of Iron Doping on the Performance of Mn/TiO2 Catalysts for NO Reduction with NH3 at Low Temperature

2013 ◽  
Vol 864-867 ◽  
pp. 1415-1420
Author(s):  
Jie Nan Hong ◽  
Wei Guo Pan ◽  
Rui Tang Guo ◽  
Wen Long Zhen ◽  
Yue Liang Yu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
No Reduction ◽  
Catalytic Reduction ◽  
Poor Performance ◽  
Acid Sites ◽  
Iron Doping ◽  
Reduction Of No ◽  
Catalysts For No Reduction ◽  
Redox Ability

The catalysts of Mn/TiO2, Fe/TiO2and Mn-Fe/TiO2prepared by coprecipitation method were investigated for low temperature selective catalytic reduction of NO with NH3. The catalytic activity and SO2resistance of these three catalysts were tested and the properties of the catalysts were characterized by using N2-BET, XRD, H2-TPR, NH3-TPD methods. It was found that the doping of iron reduced the catalytic activity of Mn/TiO2catalyst at low temperature and also has an adverse effect for its SO2resistance at the same time. The decrease of surface area , redox ability and surface acid sites caused by doping of iron might be the main reasons for poor performance of this catalyst.

Promoting effect of Zn2+ on active carbon-supported Cu oxide catalysts for no reduction

1999 ◽  
Vol 66 (1) ◽  
pp. 19-25 ◽  
Author(s):  
R. Nickolov ◽  
M. Khristova ◽  
R. Ioncheva ◽  
D. Mehandjiev
Keyword(s):  
Active Carbon ◽  
No Reduction ◽  
Oxide Catalysts ◽  
Promoting Effect ◽  
Catalysts For No Reduction

Effect of SO2 on V2O5/ACF catalysts for NO reduction with NH3 at low temperature

2009 ◽  
Vol 10 (11) ◽  
pp. 1538-1541 ◽  
Author(s):  
Yaqin Hou ◽  
Zhanggen Huang ◽  
Shijie Guo
Keyword(s):  
Low Temperature ◽  
No Reduction ◽  
Catalysts For No Reduction

Novel MnOx Catalysts for NO Reduction at Low Temperature with Ammonia

2006 ◽  
Vol 106 (1-2) ◽  
pp. 77-80 ◽  
Author(s):  
Min Kang ◽  
Tae Hun Yeon ◽  
Eun Duck Park ◽  
Jae Eui Yie ◽  
Ji Man Kim
Keyword(s):  
Low Temperature ◽  
No Reduction ◽  
Catalysts For No Reduction

La1−Ce MnO3/attapulgite nanocomposites as catalysts for NO reduction with NH3 at low temperature

Particuology ◽  
2016 ◽  
Vol 26 ◽  
pp. 66-72 ◽  
Author(s):  
Xiazhang Li ◽  
Yu Yin ◽  
Chao Yao ◽  
Shixiang Zuo ◽  
Xiaowang Lu ◽  
...  
Keyword(s):  
Low Temperature ◽  
No Reduction ◽  
Catalysts For No Reduction

scholarly journals Enhanced Low Temperature NO Reduction Performance via MnOx-Fe2O3/Vermiculite Monolithic Honeycomb Catalysts

Catalysts ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 100 ◽  
Author(s):  
Ke Zhang ◽  
Feng Yu ◽  
Mingyuan Zhu ◽  
Jianming Dan ◽  
Xugen Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
No Reduction

Unveiling the Promotion Effects of CoO on Low-Temperature NO Reduction with CO over an In-Situ-Established Co3O4–CoO Heterostructure

2021 ◽  
Vol 9 (17) ◽  
pp. 6107-6117
Author(s):  
Xinyang Wang ◽  
Ling Zhao ◽  
Xinyong Li ◽  
Jincheng Mu ◽  
Liehao Wei ◽  
...  
Keyword(s):  
Low Temperature ◽  
No Reduction
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