Phototransformation Processes of Oil Sands Bitumen Under the Influence of Ultraviolet Radiation

IF 0.4 Q4 ENGINEERING, CHEMICAL

Coke and Chemistry Pub Date : 2025-05-13 DOI:10.3103/S1068364X25600022

Rena A. Jafarova, Ulviyya J. Yolchuyeva, Orhan R. Abbasov, Aygul F. Aliyeva, Elnur E. Baloglanov, Nazli A. Mehdiyeva, Fatma I. Gasimova

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Abstract

The need to obtain lighter hydrocarbon products from organic compounds, including bitumen extracted from oil sands in contact with the atmosphere, requires the study of chemical transformations in their composition.This chemical transformation is characterized by a change in the composition of bitumen and its oxidation under the influence of sunlight. In this work, changes in the structure of aromatic hydrocarbons of oxidized organic compounds in oil sand samples from the Girgishlag-Girdagh outcrop of Eastern Azerbaijan under the influence of sunlight were studied using ultraviolet (UV), infrared (IR) and luminescent methods. Two hours of photoirradiation resulted in the formation of cyclic peroxides, endoperoxides and hydroxynones from polycyclic aromatic hydrocarbons (PAHs). Cyclic peroxides, formed under the influence of high-energy photons, disappeared when exposed to polychromatic rays. Thus, our experimental studies allow us to evaluate the mechanism of the oxidation process and its time-dependent existence in bitumen oxidized under the influence of sunlight. This approach can be considered as one of the criteria for assessing the possibilities of obtaining fuel and energy products from oil sands and heavy hydrocarbons.

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紫外光作用下油砂沥青的光转化过程

从有机化合物（包括从与大气接触的油砂中提取的沥青）中获得较轻的碳氢化合物产品，需要对其成分的化学转变进行研究。这种化学转化的特点是沥青成分的变化及其在阳光影响下的氧化。本文采用紫外（UV）、红外（IR）和发光方法研究了东阿塞拜疆girgishlagg - girdagh露头油砂样品中氧化有机化合物芳烃结构在阳光作用下的变化。两个小时的光照射导致多环芳烃（PAHs）形成环过氧化物、内过氧化物和羟基酮。在高能光子的影响下形成的环状过氧化物，在暴露于多色射线下就消失了。因此，我们的实验研究使我们能够评估氧化过程的机制及其在阳光影响下氧化沥青中的时间依赖性存在。这种方法可以作为评价从油砂和重碳氢化合物中获得燃料和能源产品的可能性的标准之一。

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来源期刊

Coke and Chemistry ENGINEERING, CHEMICAL-

CiteScore

0.70

自引率

50.00%

发文量

期刊介绍： The journal publishes scientific developments and applications in the field of coal beneficiation and preparation for coking, coking processes, design of coking ovens and equipment, by-product recovery, automation of technological processes, ecology and economics. It also presents indispensable information on the scientific events devoted to thermal rectification, use of smokeless coal as an energy source, and manufacture of different liquid and solid chemical products.