scholarly journals Catalytic oxidation of NO over MnOx–CoOx/TiO2 in the presence of a low ratio of O3/NO: activity and mechanism

RSC Advances ◽  
2020 ◽  
Vol 10 (41) ◽  
pp. 24493-24506
Author(s):  
Meng Si ◽  
Boxiong Shen ◽  
Lijun Liu ◽  
Haohao Zhang ◽  
Wenjun Zhou ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Oxidation ◽  
No Oxidation ◽  
Oxidation Of No

O3 promotes the formation of monodentate nitrates at low temperature, thus improving the efficiency of NO oxidation.

The inhibition effect and deactivation mechanism of H2O and SO2 on selective catalytic oxidation of NO over the Mn–Ca–Ox–(CO3)y catalyst

2019 ◽  
Vol 43 (48) ◽  
pp. 19279-19285 ◽  
Author(s):  
Chi Wang ◽  
Ruiyuan Zhang ◽  
Yishan Zhang ◽  
Ping Ning ◽  
Xin Song ◽  
...  
Keyword(s):  
Particle Size ◽  
Catalytic Oxidation ◽  
No Oxidation ◽  
Inhibition Effect ◽  
Selective Catalytic Oxidation ◽  
Oxidation Of No ◽  
Deactivation Mechanism

H2O and SO2 had an inhibition effect on NO oxidation. SO2 increased the particle size of the catalyst. H2O decreased the particle size of the catalyst.

Non-Thermal Plasma Assisted Catalytic Oxidation NO over Mn-Ni-Ox Catalysts at Low-Temperature

2011 ◽  
Vol 383-390 ◽  
pp. 3092-3098 ◽  
Author(s):  
Kai Li ◽  
Xiao Long Tang ◽  
Hong Hong Yi ◽  
Ping Ning ◽  
Zhi Qing Ye ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Oxidation ◽  
Thermal Plasma ◽  
Space Velocity ◽  
Input Voltage ◽  
No Oxidation ◽  
Precipitation Method ◽  
Non Thermal Plasma ◽  
High Space ◽  
Co Precipitation

Mn-Ni-Ox catalyst was prepared by the co-precipitation method. The most active catalysts were obtained with a molar Ni/ (Mn+Ni) ratio of 0.1. The results showed that over this catalyst, NO oxidation conversion reached 59% at 125°C and 50% at 150°C with a high space velocity of 35000h-1. Their surface properties were evaluated by means of scanning electron microscopy (SEM). The process of non-thermal plasma-assisted catalytic oxidation of NO under low-temperature was studied. And the NO conversion could reach 80% with the non-thermal plasma-assisting at 150°C when the input voltage was 30V. The increasing activities at low temperature（50~175°C）were more apparently higher than high temperature by plasma. And the low-temperature catalytic activity of the catalyst was increased with the increase of the input voltage.

Catalytic Oxidation of NO on N-doped Carbon Materials at Low Temperature

2020 ◽  
Author(s):  
Xiuyong Zou ◽  
Shifeng Lou ◽  
Chao Yang ◽  
Naiwang Liu ◽  
Xin Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Oxidation ◽  
Carbon Materials ◽  
Oxidation Of No

The roles of Brønsted acidity in low-temperature catalytic oxidation of NO over acidic zeolites with H2O2

Chemosphere ◽  
2020 ◽  
Vol 251 ◽  
pp. 126561
Author(s):  
Rongji Cui ◽  
Suxia Ma ◽  
Bingchuan Yang ◽  
Shicheng Li ◽  
Jing Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Oxidation ◽  
Brønsted Acidity ◽  
Brönsted Acidity ◽  
Acidic Zeolites ◽  
Oxidation Of No

Low-temperature catalytic oxidation of NO over Mn-Ce-Ox catalyst

2010 ◽  
Vol 28 (1) ◽  
pp. 64-68 ◽  
Author(s):  
Hua LI ◽  
Xiaolong TANG ◽  
Honghong YI ◽  
Lili YU
Keyword(s):  
Low Temperature ◽  
Catalytic Oxidation ◽  
Oxidation Of No

An Environment-Friendly Method to Catalytically Oxidate NO in Waste Water by Supported Manganese Oxide on Graphite Oxide

2015 ◽  
Vol 768 ◽  
pp. 3-9 ◽  
Author(s):  
Rui Jing Su ◽  
Min Cong Zhu ◽  
Xiu Zhi Sun ◽  
Jie Guan
Keyword(s):  
Manganese Oxide ◽  
Catalytic Oxidation ◽  
High Efficiency ◽  
Advanced Oxidation Process ◽  
Catalyst System ◽  
Complex Compounds ◽  
No Oxidation ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Oxidation Of No

In order to generate powerful radicals as oxidizing species for the complete oxidation of NO, homogeneous activation of peroxymonosulfate (Oxone: PMS) by the Mn3O4/GO catalysts was explored. The catalytic oxidation of NO from waste gas was investigated using advanced oxidation process based on sulfate radicals that produced. The manganese oxide immobilized on graphene oxide (GO) can activate PMS for the oxidation of NO in water. We not only took advantage of the high oxidation–reduction potential of produced sulfite radicals but also an opportunity to oxidize NO on less complex compounds with low dosages. The Mn3O4/GO catalysis system was characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that Mn3O4was well-distributed on GO. The Mn3O4/GO catalyst system exhibited high efficiency for NO oxidation when the Mn3O4/GO catalyst has an optimum Mn3O4loading. In addition, the best catalytic oxidation can be achieved within 30 min with pH 4 and 6 mM PMS at 25 °C. Therefore, the results indicate promising potential for a system utilizing Mn3O4/PMS to oxidize NO for offgas treatment.

Low-temperature catalytic oxidation of NO over Mn–Co–Ce–Ox catalyst

2012 ◽  
Vol 192 ◽  
pp. 99-104 ◽  
Author(s):  
Kai Li ◽  
Xiaolong Tang ◽  
Honghong Yi ◽  
Ping Ning ◽  
Dongjuan Kang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Oxidation ◽  
Oxidation Of No

Electrochemical Promotion Catalytic Oxidation of NO over Mn/TiO2 and Mn-Fe Catalyst

2011 ◽  
Vol 219-220 ◽  
pp. 1472-1476 ◽  
Author(s):  
Jing Hao Song ◽  
Xiao Long Tang ◽  
Hong Hong Yi ◽  
Ping Ning ◽  
Kai Li ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Fixed Bed ◽  
Input Voltage ◽  
Electrochemical Promotion ◽  
Reaction Rates ◽  
Electrochemical Reactor ◽  
No Oxidation ◽  
Fixed Bed Reactor ◽  
Fe Catalyst ◽  
Oxidation Of No

A new type electrochemical reactor was designed for electrochemical promotion catalytic oxidation of NO, which was a flat-plate fixed-bed reactor. The experimental results showed that the process of NO catalytic oxidation could be promoted though this electrochemical reactor with Mn/TiO2and Mn-Fe, which were two kinds of selected catalysts for NO oxidation. Approximately 70% NO could be converted to NO2at 50 °C when the input voltage of electrochemical reactor was 0.5v. Moreover, the reaction rates can be adjusted with the input voltage varying.

Catalytic oxidation of NO over MnO2 with different crystal structures

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 54032-54040 ◽  
Author(s):  
Hu Chen ◽  
Ying Wang ◽  
Yong-Kang Lv
Keyword(s):  
Crystal Structures ◽  
Catalytic Oxidation ◽  
Hydrothermal Method ◽  
Catalytic Properties ◽  
No Oxidation ◽  
Oxidation Of No

α-, β-, γ- and δ-MnO2 catalysts were prepared by a hydrothermal method and their catalytic properties for NO oxidation were evaluated.

Non-Thermal Plasma Assisted Catalytic Oxidation NO over Mn-Co-Ox Catalysts at Low-Temperature

2010 ◽  
Vol 160-162 ◽  
pp. 336-341 ◽  
Author(s):  
Kai Li ◽  
Xiao Long Tang ◽  
Hong Hong Yi ◽  
Ping Ning ◽  
Zhi Qing Ye ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Oxidation ◽  
Thermal Plasma ◽  
Space Velocity ◽  
Input Voltage ◽  
No Oxidation ◽  
Precipitation Method ◽  
Non Thermal Plasma ◽  
High Space ◽  
Co Precipitation

Mn-Co-Ox catalyst was prepared by the co-precipitation method. The most active catalysts were obtained with a molar Co/(Mn+Co) ratio of 0.1. The results showed that over this catalyst, NO oxidation conversion reached 56% at 150°C and 59% at 175°C with a high space velocity of 35000h-1. Their surface properties were evaluated by means of scanning electron microscopy (SEM) and X-ray diffractometer (XRD). The process of Non-thermal plasma-assisted catalytic oxidation of NO under low-temperature was studied. And the NO conversion could reach 71% with the Non-thermal plasma-assisting at 125°C when the input voltage was 30V. The increasing activities at low temperature (50-150°C) were more apparently higher than high temperature by plasma. And the low-temperature catalytic activity of the catalyst was increased with the increase of the input voltage.

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