Published October 2023, Pg. 41-45

Section: Oil refining and petroleum chemistry

UOT: 665.612.2-027.22

DOI: 10.37474/0365-8554/2023-10-41-45

Radicals in West Absheron oil

M.A. Najafova Dr. in Ch. Sc. - Institute of Petrochemical Processes

R.A. Jafarova Dr. in Ch. Sc. - Institute of Petrochemical Processes

Yu.Ə. Abdullaeva Cand. in Tech. Sc. - Institute of Petrochemical Processes

N.A. Rzaeva - Institute of Petrochemical Processes

N.G. Alekperova - Institute of Petrochemical Processes

M.А. Bairamov - Institute of Petrochemical Processes

Fractions of I-IV groups of aromatic hydrocarbons (AH) of West Absheron oil were studied by EPR and UV spectroscopy. Paramagnetism was not detected in the I group of AU. The presence of homologues of benzene, naphthalene, phenanthrene and anthracene was found in AC groups I-III. In oil fractions 120–230 oC, 150–280 oC EPR spectra are recorded ∆Hwidth=7.5 mT, g=2.3. Mn+2 were found in small amounts. In oil fractions 140–350 oC, 180–350 oC EPR signals were found ∆Hwidth=1.1 mT, g=2.002, which are also recorded in group II AC. Co, Mn+2 were also found in this group. In AC group IV, Co and asphaltene radicals are observed.

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