Mesophase formation and chemical changes in petroleum pitch during low-temperature heat soaking
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A-240 petroleum pitch was used to study the mesophase formation. The mesophase formation of solvent and solvent-acid extracted pitch were controlled in terms of optical texture by adding aromatic hydrocarbon compounds as nucleating agents. It is possible to improve considerably the coking properties that are enhanced by the ring condensation tendency of the precursor. The mesophase yield of the HF-solvent extracted pitches in the presence of 1% anthracene was increased when compared with HF-solvent extracted pitch in the absence of anthracene. In this case, HF acted as a catalyst along with anthracene for ring condensation, similar to AlCl3 in the aromatic hydrocarbons.
KeywordsPolymer Petroleum Hydrocarbon Chemical Change Aromatic Hydrocarbon
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