ReaxFF study on nitrogen-transfer mechanism in the oxidation process of lignite

Fuel ◽  
2017 ◽  
Vol 193 ◽  
pp. 331-342 ◽  
Author(s):  
Ying-Ying Li ◽  
Guang-Yue Li ◽  
Hang Zhang ◽  
Jie-Ping Wang ◽  
An-Qi Li ◽  
...  
Keyword(s):  
Oxidation Process ◽  
Transfer Mechanism ◽  
Nitrogen Transfer

Electron transfer mechanism of peroxydisulfate activation by sewage sludge-derived biochar for enhanced sulfamethoxazole degradation

2021 ◽  
Author(s):  
Xuan-Yuan Pei ◽  
Hong-Yu Ren ◽  
Defeng Xing ◽  
Guo-Jun Xie ◽  
Guangli Cao ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Wastewater Treatment Plant ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Treatment Plant ◽  
Advanced Oxidation ◽  
Transfer Mechanism ◽  
Electron Transfer Mechanism

The exploration of efficient and economical persulfate activators in persulfate-based advanced oxidation process for wastewater treatment is in urgent need. In this work, sewage sludge from wastewater treatment plant was...

Electron transfer-induced oxidation of 2,3-dihydroquinazolin-4(1H)-ones

2017 ◽  
Vol 72 (6) ◽  
pp. 403-408 ◽  
Author(s):  
Hamid Reza Memarian ◽  
Saeideh Ghahremani
Keyword(s):  
Electron Transfer ◽  
Oxidation Process ◽  
Transfer Mechanism ◽  
Electron Transfer Mechanism

AbstractA series of 2-substituted 2,3-dihydroquinazolin-4(1H)-ones were oxidized to quinazolin-4(3H)-ones using tetrabutylammonium peroxydisulfate. The rate and the outcome of the reaction are dependent on the type and nature of 2-substitution. An electron transfer mechanism is proposed for this study, which is supported by the retention or elimination of 2-substitution during the oxidation process.

Nitrogen transfer mechanism research on the co- pyrolysis macroalgae with polyethylene

2022 ◽  
Vol 51 ◽  
pp. 101886
Author(s):  
Xuping Yang ◽  
Ding Jiang ◽  
Xiaoxue Cheng ◽  
Fatma Marrakchi ◽  
Chuan Yuan ◽  
...  
Keyword(s):  
Transfer Mechanism ◽  
Nitrogen Transfer ◽  
Mechanism Research

ReaxFF molecular dynamics study on nitrogen-transfer mechanism in the hydropyrolysis process of lignite

2020 ◽  
Vol 744 ◽  
pp. 137214 ◽  
Author(s):  
Jie-Ping Wang ◽  
Yan-Ni Wang ◽  
Guang-Yue Li ◽  
Zi-Zhao Ding ◽  
Qiang Lu ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Transfer Mechanism ◽  
Nitrogen Transfer

Control of Metal Alloy Oxidation with Electric Fields

1973 ◽  
Vol 31 ◽  
pp. 164-165
Author(s):  
R. R. Dils ◽  
P. S. Follansbee
Keyword(s):  
Electric Fields ◽  
Oxidation Process ◽  
Base Alloy ◽  
Oxide Surface ◽  
Platinum Electrodes ◽  
Insulating Layer ◽  
Iron Base Alloy ◽  
Alloy Oxidation ◽  
Aluminum Oxide Layer ◽  
And Control

Electric fields have been applied across oxides growing on a high temperature alloy and control of the oxidation of the material has been demonstrated. At present, three-fold increases in the oxidation rate have been measured in accelerating fields and the oxidation process has been completely stopped in a retarding field.The experiments have been conducted with an iron-base alloy, Pe 25Cr 5A1 0.1Y, although, in principle, any alloy capable of forming an adherent aluminum oxide layer during oxidation can be used. A specimen is polished and oxidized to produce a thin, uniform insulating layer on one surface. Three platinum electrodes are sputtered on the oxide surface and the specimen is reoxidized.

Structural Imperfections in thin Oxide Films Formed on Some Fe- and Ni-Base Alloys

1970 ◽  
Vol 28 ◽  
pp. 510-511
Author(s):  
L. P. Lemaire ◽  
D. E. Fornwalt ◽  
F. S. Pettit ◽  
B. H. Kear
Keyword(s):  
Oxide Scale ◽  
Oxidation Process ◽  
Short Circuit ◽  
Protective Oxide ◽  
Protective Oxide Scale ◽  
Thin Oxide Films ◽  
Diffusion Paths ◽  
Oxidation Resistant ◽  
Structural Imperfections ◽  
Short Circuit Diffusion

Oxidation resistant alloys depend on the formation of a continuous layer of protective oxide scale during the oxidation process. The initial stages of oxidation of multi-component alloys can be quite complex, since numerous metal oxides can be formed. For oxidation resistance, the composition is adjusted so that selective oxidation occurs of that element whose oxide affords the most protection. Ideally, the protective oxide scale should be i) structurally perfect, so as to avoid short-circuit diffusion paths, and ii) strongly adherent to the alloy substrate, which minimizes spalling in response to thermal cycling. Small concentrations (∼ 0.1%) of certain reactive elements, such as yttrium, markedly improve the adherence of oxide scales in many alloy systems.

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