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Production of Carbon Products Using a Coal Extraction Process (Semiannual Report, March 11, 2003-September 11, 2003).

DE2006862313

Publication Date	2005
Personal Author	Dadyburjor, D.
Page Count	28
Abstract	High melting temperature synthetic pitches (Synpitches) were created using coal derivatives produced from a solvent extraction technique. Solvent extraction is used to separate hydrocarbons from mineral matter as well as other insolubles. Mild hydrogenation can be used to chemically modify resultant material to produce a true pitch. There are three main techniques which can be used to tailor the softening point of the Synpitch. First, the softening point can be controlled by varying the conditions of hydrogenation, chiefly the temperature, pressure and residence time in a hydrogen overpressure. Second, by selectively distilling light hydrocarbons, the softening point of the remaining pitch can be raised. Third, the Synpitch can be blended with another mutually soluble pitch or hydrocarbon liquid. Through such techniques, spinnable isotropic Synpitches have been created from coal feedstocks. Characteristics of Synpitches include high cross-linking reactivity and high molecular weight, resulting in carbon fibers with excellent mechanical properties. To date, mechanical properties have been achieved which are comparable to the state of the art achievable with conventional coal tar pitch or petroleum pitch.
Keywords	Coal Solvent extraction Production Carbon fibers Coal tar Petroleum Pitches Hydrogenation Hydrocarbons Hydrogen fuels Synthetic fuels Mechanical properties
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	West Virginia Univ., Morgantown.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200617

Production of Carbon Products Using a Coal Extraction Process (Semiannual Report, March 11, 2003-September 11, 2003).

Production of Carbon Products Using a Coal Extraction Process (Semiannual Report, March 11, 2003-September 11, 2003).
DE2006862313

Publication Date	2005
Personal Author	Dadyburjor, D.
Page Count	28
Abstract	High melting temperature synthetic pitches (Synpitches) were created using coal derivatives produced from a solvent extraction technique. Solvent extraction is used to separate hydrocarbons from mineral matter as well as other insolubles. Mild hydrogenation can be used to chemically modify resultant material to produce a true pitch. There are three main techniques which can be used to tailor the softening point of the Synpitch. First, the softening point can be controlled by varying the conditions of hydrogenation, chiefly the temperature, pressure and residence time in a hydrogen overpressure. Second, by selectively distilling light hydrocarbons, the softening point of the remaining pitch can be raised. Third, the Synpitch can be blended with another mutually soluble pitch or hydrocarbon liquid. Through such techniques, spinnable isotropic Synpitches have been created from coal feedstocks. Characteristics of Synpitches include high cross-linking reactivity and high molecular weight, resulting in carbon fibers with excellent mechanical properties. To date, mechanical properties have been achieved which are comparable to the state of the art achievable with conventional coal tar pitch or petroleum pitch.
Keywords	Coal Solvent extraction Production Carbon fibers Coal tar Petroleum Pitches Hydrogenation Hydrocarbons Hydrogen fuels Synthetic fuels Mechanical properties
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	West Virginia Univ., Morgantown.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200617