Effect of Oxygen Functional Groups on the Surface Properties and Flotation Response of Fine Coal, Comparison of Rank with Oxidation

2018 ◽  
pp. 1-17 ◽  
Author(s):  
Ying Lu ◽  
Enze Li ◽  
Huaigang Cheng ◽  
Xuming Wang ◽  
Zhiping Du ◽  
...  
Keyword(s):  
Surface Properties ◽  
Functional Groups ◽  
Fine Coal ◽  
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

Effect of oxygen functional groups on synthetic carbons on liquid phase oxidation of cyclohexanone

Carbon ◽  
2002 ◽  
Vol 40 (8) ◽  
pp. 1267-1278 ◽  
Author(s):  
Anne Pigamo ◽  
Michèle Besson ◽  
Bernard Blanc ◽  
Pierre Gallezot ◽  
Andy Blackburn ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Functional Groups ◽  
Liquid Phase Oxidation ◽  
Oxygen Functional Groups ◽  
Phase Oxidation ◽  
Effect Of Oxygen

scholarly journals Tuning the textural and surface properties of carbon xerogels to be used as supports for gold catalysts

2012 ◽  
Vol 10 (6) ◽  
pp. 1867-1874 ◽  
Author(s):  
Xuelian Xu ◽  
Junjiang Zhu ◽  
Joaquim Faria ◽  
Jinlin Li ◽  
José Figueiredo
Keyword(s):  
Liquid Phase ◽  
Surface Properties ◽  
Functional Groups ◽  
Gold Catalysts ◽  
Micropore Volume ◽  
Surface Oxygen ◽  
Oxygen Functional Groups ◽  
Carbon Xerogels ◽  
Ph Conditions ◽  
Synthesis Procedure

AbstractCarbon xerogels (CXs) synthesized from resorcinol and formaldehyde under different pH conditions were investigated. Both the textural and surface properties of the CXs depend closely on the pH used in the synthesis procedure. Concerning the texture, the mesoporous surface area (Smeso) increases and the micropore volume (Vmicro) decreases as the pH increases; concerning the surface chemistry, surface oxygen functional groups were easier to be created (by O2) on CX synthesized at lower pH. Application of these CXs as support of gold catalysts was also studied. Results showed that the oxygen activated CX that was synthesized at moderate pH (i.e., pH 6.0) was the most favorable support for gold catalysts used in selective oxidation of benzyl alcohol by molecular oxygen in liquid phase, due to the adequate amounts of surface oxygen functional groups created on the surface.

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