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Study of Petroleum-Based Aqua-Mesophase Pitch

Author: WangJiuZhou
Tutor: WangChengYang
School: Tianjin University
Course: Chemical processes
Keywords: Aqua-mesophase pitch Surface functional groups Electrochemical capacitors Graphite oxide
CLC: TE626.86
Type: Master's thesis
Year: 2009
Downloads: 74
Quote: 1
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Abstract


ance of 337F/g. This paper was addressed on studying the preparation and characterization of aqua-mesophase pitch(AMP), the basic form and formation mechanism of AMP were investigated deeply. High performance carbon electrodes were prepared by KOH activation using AMP as precursor. This experiment also studies the morphology change of graphite oxide in carbonization process, there is certain relationship between carbonization temperature and the structure of graphite oxide.The preparation of AMP was investigated by oxidation of petroleum coke with mixtures of concentrated sulfuric and nitric acid. In order to further study the surface morphology and internal structure of AMP, a series of modern analysis methods, such as SEM, TEM, XRD, TGA, FT-IR, XPS were used. The research shows that a variety of oxygen-containing function groups(C=O, -COO-, -NO2, -SO3H) exist in the surface of AMP, which is an interesting material that can dissolve in alkaline solution but can not dissolve in acidic solution. AMP is difficult to be graphitized was confirmed with the aid of TEM observation and XRD analysis. The activated carbon prepared under optimum conditions had specific surface area over 3300m2/g and partial pore size of 2~5nm. Results show that the activated carbon with high surface area have a high gravimetric capacitThis paper also studies the relationship between carbonization temperature and the lamellar structure of graphite oxide. Research shows that the interlayer distance of graphite oxide decreased with the increase of carbonization temperature and oxygen-containing function groups’thermal decomposition.

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CLC: > Industrial Technology > Oil and gas industry > Oil, natural gas processing industry > Petroleum refining > Petroleum products > Solid petroleum products > Asphalt
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