Effect of Nickel Nanopowder on the Thermal Degradation of Coal Tar Distillate
Таскөмір шайыры дистиллятының термиялық ыдырауына никель наноұнтағының әсері
Влияние нанопорошка никеля на термическое разложение дистиллята каменноугольной смолы
Kim S.V. Baikenov M.I. Ibishev K.S. Meiramov M.G. Ma F. Khamitova T.O.
2022E.A.Buketov Karaganda State University Publish House
Bulletin of the Karaganda University Chemistry Series
2022#106Issue 2134 - 144 pp.
Regularities of influence of nickel nanopowder on the thermal degradation of coal tar distillate were determined using model-free Kissinger, Flynn-Wall-Ozawa and model-fitting Coats-Redfern methods. Coal tar distillate with a boiling point of <350 °C was obtained by simple distillation of primary coal tar from the Shubarkol deposit. Nickel nanopowder was used as a catalyst and was added to coal tar distillate in a quantity of 1 % of the mass of the distillate and then the process of thermal degradation of coal tar distillate was conducted at heating rates 5, 10 and 20 °C/min in an inert gas medium. Nickel powder was obtained by high-voltage discharge impact on the dc electrolysis. X-ray diffraction (XRD) analysis showed that the obtained nickel powder has face-centered cubic structure and the average crystallite size calculated by the Scherrer equation was ~ 34 nm. Calculations of activation energy were performed via processing of thermogravimetric data. The Kissinger method showed that the activation energy value decreases from 145.19 kJ/mol to 43.65 kJ/mol, by the Flynn-Wall-Ozawa (FWO) method the value decreases from 152.82 kJ/mol to 51.65 kJ/mol, and by the Coats-Redfern method the value decreases from 143.38 kJ/mol to 52.64 kJ/mol. Applicability of these methods is ensured by the high values of correlation coefficients.
activation energy , coal tar , crystallite , distillate , nanopowder , nickel , thermal degradation , thermogravimetric analysis
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Karagandy University of the name of academician E.A. Buketov, Universitetskaya street, 28, Karaganda, 100024, Kazakhstan
Zh. Abishev Chemical-Metallurgical Institute, Ermekov street, 63, Karaganda, 100009, Kazakhstan
Institute of Organic Synthesis and Coal Chemistry, the Republic of Kazakhstan, Alihanova street, 1, Karaganda, Kazakhstan
Xinjiang University, Nan Min Lu street, 666, Xinjiang Uygur Autonomous Region (XUAR), Urumqi, 666, China
Agronomic Faculty, S. Seifullin Kazakh Agro Technical University, Zhenis avenue, 62, Nur-Sultan, 010011, Kazakhstan
Karagandy University of the name of academician E.A. Buketov
Zh. Abishev Chemical-Metallurgical Institute
Institute of Organic Synthesis and Coal Chemistry
Xinjiang University
Agronomic Faculty
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