Birnessite as a Highly Efficient Catalyst for Low-Temperature NH3-SCR: The Vital Role of Surface Oxygen Vacancies

2020 ◽  
Vol 59 (33) ◽  
pp. 14606-14615
Author(s):  
Xue Fang ◽  
Yongjun Liu ◽  
Wanglai Cen ◽  
Yan Cheng
Keyword(s):  
Low Temperature ◽  
Oxygen Vacancies ◽  
Vital Role ◽  
Surface Oxygen ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Nh3 Scr

Novel approach for a cerium-based highly-efficient catalyst with excellent NH3-SCR performance

2014 ◽  
Vol 4 (10) ◽  
pp. 3611-3614 ◽  
Author(s):  
Haili Huang ◽  
Wenpo Shan ◽  
Shijian Yang ◽  
Jinhua Zhang
Keyword(s):  
Low Temperature ◽  
Catalytic Performance ◽  
Efficient Catalyst ◽  
Scr Catalyst ◽  
Highly Efficient ◽  
Nh3 Scr ◽  
Novel Approach ◽  
Operational Temperature ◽  
Temperature Window ◽  
Excellent Catalytic Performance

A highly-efficient NH3-SCR catalyst, CeO2/WO3–TiO2, was prepared by a novel stepwise precipitation approach. This catalyst showed excellent catalytic performance with superior low-temperature activity, high N2 selectivity and a broad operational temperature window.

A Central Role of Nitrogen Atoms in a Highly Efficient Catalyst for Cathodic Hydrogen Evolution

ChemSusChem ◽  
2021 ◽  
Author(s):  
Meng-Jie Zhao ◽  
Sheng-Ying Su ◽  
Ning Deng ◽  
Jun-Qing Shi ◽  
Fang Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Cathodic Hydrogen Evolution

Improved NH3-SCR deNOx activity and tolerance to H2O & SO2 at low temperature over the NbmCu0.1-mCe0.9Ox catalysts: Role of acidity by niobium doping

Fuel ◽  
2021 ◽  
Vol 303 ◽  
pp. 121239
Author(s):  
Zhiping Zhang ◽  
Yingying Li ◽  
Piaoping Yang ◽  
Yushi Li ◽  
Chen Zhao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Niobium Doping ◽  
Nh3 Scr

scholarly journals The Effect of Tourmaline on SCR Denitrification Activity of MnOx/TiO2 at Low Temperature

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1020
Author(s):  
Yizhe Helian ◽  
Suping Cui ◽  
Xiaoyu Ma
Keyword(s):  
Low Temperature ◽  
Catalytic Reduction ◽  
Catalytic Performance ◽  
Scr Catalyst ◽  
Highly Efficient ◽  
Nh3 Scr ◽  
Catalytic Material ◽  
Acidic Sites ◽  
Denitrification Activity ◽  
The Stability

Selective catalytic reduction (SCR) technology is the most widely used flue gas denitration technology at present. The stability of a catalyst is the main factor limiting the development of this technology. In this study, an environmentally friendly and highly efficient NH3-SCR catalyst was prepared by coprecipitation method from acidolysis residue of industrial waste and tourmaline. We found that the addition of tourmaline has an important impact on the denitration activity of the catalytic material. The NOx conversion exceeded 97% at 200 °C with the dosage of 10% tourmaline, which is about 7% higher than that without doping. The improvement of catalytic performance was mostly attributed to the permanent electrodes of tourmaline, which effectively promotes the dispersion of MnOx/TiO2 catalytic materials, increases the number of acidic sites and changes the valence distribution of manganese ions in products, which speeds up the diffusion of protons and ions, resulting in the acceleration of redox reaction. These as-developed tourmaline-modified MnOx/TiO2 materials have been demonstrated to be promising as a new type of highly efficient low-temperature NH3-SCR catalyst.

A Highly Effective Catalyst of Sm-MnOx for the NH3-SCR of NOx at Low Temperature: Promotional Role of Sm and Its Catalytic Performance

ACS Catalysis ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 5973-5983 ◽  
Author(s):  
Dongmei Meng ◽  
Wangcheng Zhan ◽  
Yun Guo ◽  
Yanglong Guo ◽  
Li Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Performance ◽  
Effective Catalyst ◽  
Nh3 Scr ◽  
Highly Effective ◽  
Scr Of Nox

Highly efficient MnOx/biochar catalysts obtained by air oxidation for low-temperature NH3-SCR of NO

Fuel ◽  
2021 ◽  
Vol 283 ◽  
pp. 119336
Author(s):  
Lu Liu ◽  
Bangda Wang ◽  
Xiaojiang Yao ◽  
Lin Yang ◽  
Wenju Jiang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Air Oxidation ◽  
Highly Efficient ◽  
Nh3 Scr ◽  
Scr Of No

scholarly journals Pt/MnO2nanosheets: facile synthesis and highly efficient catalyst for ethylene oxidation at low temperature

RSC Advances ◽  
2017 ◽  
Vol 7 (24) ◽  
pp. 14809-14815 ◽  
Author(s):  
Min Wang ◽  
Lingxia Zhang ◽  
Weimin Huang ◽  
Yajun Zhou ◽  
Han Zhao ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Effect ◽  
Complete Removal ◽  
Adsorbed Oxygen ◽  
Ethylene Oxidation ◽  
Oxygen Species ◽  
Facile Synthesis ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Adsorbed Oxygen Species

The obtained catalyst Pt/MnO2-48 h demonstrated complete removal of 20 ppm C2H4at 50 °C for at least 12 h due to the large amount of adsorbed oxygen species and synergetic catalytic effect between Pt and the MnO2support.

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