Molecular dynamics study of hydrogen adsorption in carbonaceous microporous materials and the effect of oxygen functional groups

2007 ◽  
Vol 32 (12) ◽  
pp. 1999-2004 ◽  
Author(s):  
M. Georgakis ◽  
G. Stavropoulos ◽  
G.P. Sakellaropoulos
Keyword(s):  
Molecular Dynamics ◽  
Functional Groups ◽  
Hydrogen Adsorption ◽  
Microporous Materials ◽  
Oxygen Functional Groups ◽  
Effect Of Oxygen

scholarly journals Electrochemical Evaluation of Surface Modified Free-Standing CNT Electrode for Li–O2 Battery Cathode

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4196
Author(s):  
Ji Hyeon Lee ◽  
Hyun Wook Jung ◽  
In Soo Kim ◽  
Min Park ◽  
Hyung-Seok Kim
Keyword(s):  
Functional Groups ◽  
Atomic Layer ◽  
Free Standing ◽  
Coating Technology ◽  
Oxygen Functional Groups ◽  
Layer Deposition ◽  
Discharge Product ◽  
Effect Of Oxygen ◽  
Surface Modified ◽  
Electrochemical Evaluation

In this study, carbon nanotubes (CNTs) were used as cathodes for lithium–oxygen (Li–O2) batteries to confirm the effect of oxygen functional groups present on the CNT surface on Li–O2 battery performance. A coating technology using atomic layer deposition was introduced to remove the oxygen functional groups present on the CNT surface, and ZnO without catalytic properties was adopted as a coating material to exclude the effect of catalytic reaction. An acid treatment process (H2SO4:HNO3 = 3:1) was conducted to increase the oxygen functional groups of the existing CNTs. Therefore, it was confirmed that ZnO@CNT with reduced oxygen functional groups lowered the charging overpotential by approximately 230 mV and increased the yield of Li2O2, a discharge product, by approximately 13%. Hence, we can conclude that the ZnO@CNT is suitable as a cathode material for Li–O2 batteries.

The Effect of Oxygen-Functional Groups on the Water Resistance of Lignite Briquette

2012 ◽  
Vol 560-561 ◽  
pp. 550-554
Author(s):  
Hong Ying Liu ◽  
Xiao Hong Lu ◽  
Xin Nan Zhao ◽  
Yu Li Yang
Keyword(s):  
High Temperature ◽  
Functional Groups ◽  
Water Resistance ◽  
Carboxyl Groups ◽  
Coal Resources ◽  
Tube Reactor ◽  
Oxygen Functional Groups ◽  
Effect Of Oxygen

Because of the increased demand for coal resources, the use of low-quality lignite increased. Heating-Pressing Utilizing is a better method to process fine lignite particles. The water resistance of lignite briquettes is important. In this study, the Baorixile lignite was dried in a lab-scale tube reactor and on pilot line. The oxygenic functional groups of lignite were analyzed at different temperature. The result indicated that carboxyl groups and phenols decreased as the temperature increasing, and phenols plays a more important role on the waterproof of lignite briquettes, especially at high temperature.

Adsorption of volatile sulphur compounds onto modified activated carbons: Effect of oxygen functional groups

2013 ◽  
Vol 258-259 ◽  
pp. 77-83 ◽  
Author(s):  
Esther Vega ◽  
Jesús Lemus ◽  
Alba Anfruns ◽  
Rafael Gonzalez-Olmos ◽  
José Palomar ◽  
...  
Keyword(s):  
Functional Groups ◽  
Activated Carbons ◽  
Sulphur Compounds ◽  
Oxygen Functional Groups ◽  
Volatile Sulphur Compounds ◽  
Effect Of Oxygen ◽  
Modified Activated Carbons
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