Novel approach to the production of graphite from anthracite
- Penn State Univ., University Park, PA (United States); and others
Currently the carbon/graphite industry uses petroleum coke as the main filler constituent in the manufacture of graphite. Anthracite has been successfully used as fillers for amorphous carbon electrodes, but has not been used in the production of graphite electrodes because of its non-graphitizable structure. In the present project, a unique approach to make graphite from anthracite, focused on modifying anthracite`s precursor structure by adding a hydrogen-donating substance, has been conducted. This approach is based on two major hypotheses. First, a supply of donatable or transferable hydrogen is needed for the hydrogen-deficient anthracite structure to disrupt crosslink formation between aromatic structures within the coal. Secondly, an aromatic liquid medium is needed to help prevent electronic interactions between aromatic structures and provide the fluidity necessary for aromatic realignment into the graphite structure. Several hydrogen donors were investigated. 9,10-Dihydroanthracene showed the best ability to donate hydrogen to anthracite and also formed a highly anisotropic anthracene coke in the process. Phenanthrene was selected as the aromatic liquid medium. Both anthracene and phenanthrene have been found to he highly graphitizable. Although hydrogen was successfully donated to the anthracite, the hydrogen donation is believed to have only occurred at the surface and did not affect the internal structure of the coal. Because of the dependence of graphitizability on pore structure and the resistance of the internal coal structure to hydrogen donation, six anthracites were studied to determine their pore characteristics. Three of the anthracites, representing a variety of pore characteristics, were then selected to investigate the hydrogenation and subsequent graphitization of the anthracites treated with dihydroanthracene.
- OSTI ID:
- 254808
- Report Number(s):
- CONF-940813-; TRN: 96:003482-0164
- Resource Relation:
- Conference: 208. American Chemical Society (ACS) national meeting, Washington, DC (United States), 21-26 Aug 1994; Other Information: PBD: 1994; Related Information: Is Part Of 207th ACS national meeting. Volume 39, Nos. 1, 2, 3 and 4; PB: 1304 p.
- Country of Publication:
- United States
- Language:
- English
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