Photochemical investigation of aromatic hydrocarbons of Balakhani crude oil as petroleum luminophores
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ORIGINAL ARTICLE
Photochemical investigation of aromatic hydrocarbons of Balakhani crude oil as petroleum luminophores Ulviyya Yolchuyeva1 · Rena Japharova1 · Amir Reza Vakhshouri2 · Matlab Khamiyev1 · Chimnaz Salmanova1 · Gunay Khamiyeva1 Received: 27 May 2020 / Accepted: 11 August 2020 © The Author(s) 2020
Abstract In this paper, the photochemical conversion process of aromatic hydrocarbons in Balakhani oil well (BO) as a case study was investigated. To study the composition of BO, first, it has been separated into the first, second, third, and fourth groups of aromatics using chromatography absorption column. It has been established that the composition of the separated groups is mainly composed of mono-, tri-, and tetracyclic aromatic hydrocarbons. It has been shown that the optical densities of the absorption bands corresponding to bi-, tri-, and polycyclic aromatic hydrocarbons decrease with increasing the photoirradiation period, hence their maximum absorption band undergoes the hypsochromatic shift, which is characteristic for electron donor substances. It has been determined that the photochemical conversion process in the sample oil (BO) occurs with radical-chain and molecular mechanisms. As a result of the photochemical conversion process of arene-type aromatic hydrocarbons, the first difference during the photooxidation of endoperoxides, hydroxynones, quinones, and phenes is the formation of cyclic peroxides and quinones. Keywords Balakhani oil · Photo-irradiation process · Petroleum luminophores · UV spectroscopy · Photochemical conversion
Introduction For the petrochemical and oil-refining industries to be permanently in the spotlight of countries with rich oil fields, it is required to develop fundamental and applied research in the field of studying the primary and secondary products of oil refining. Currently, these studies are carried out with the widespread use of novel high-sensitive, modern spectral analysis methods (UV-, IR-, NMR-, EPR- and chromatomass spectroscopy and luminescence) [2, 22, 24] and thermal devices (DSC, DTA, etc.) [8, 17], which allows us to fully explain the processes of photophysical and photochemical transformations in the structural group of oil products * Matlab Khamiyev [email protected] Amir Reza Vakhshouri [email protected] 1
Institute of Petrochemical Processes, Azerbaijan National Academy of Sciences, 30, Khojaly Ave., 1025 Baku, Azerbaijan
Baku Higher Oil School, Khojaly Ave. 30, Baku, Azerbaijan
2
as well as clarification of their kinetics, the elementary steps and their mechanisms. It is known that oil consists mainly of aromatic, naphthenic-paraffin and olefin hydrocarbons [28]. However, despite the fact that the properties of each of these hydrocarbons and their role in various photophysical and photochemical processes have been studied for a long time [12], the role of complex oil systems, especially their features as one of the constituent components of primary oil products in the processes of photochemical transformation have not yet
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