The acid extraction of porphyrins from resins and asphaltenes of heavy crude with high vanadium concentration was conducted. The contrastive analysis of porphyrin fractions received after separation of resins and asphaltenes extracts detected the presence of DFEP, rodo, ethioand phyllo porphyrins in asphaltenes, but resins has only ethioand phyllotypes. No more than 60% of porphyrins from potential content were extracted from asphaltenes, while resins give practically 100% porphyrins extraction ratio.
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