Catalytic Properties of Ultrafine Nickel Powder in the Hydrogenation of Anthracene and Phenanthrene

Kim, S. V.; Ibishev, K. S.; Байкенов, М. И.; Tusipkhan, A.; Grigor’eva, V. P.; Gyul’maliev, A. M.

doi:10.3103/s0361521922010025

Cited by 2 publications

(1 citation statement)

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“…In this work, the kinetics of thermal degradation of primary coal tar distillate from the Shubarkol deposit without a catalyst and with the addition of nickel nanopowder in a quantity of 1 % of the mass of the organic compound was studied. Nickel nanopowder obtained by the action of a high-voltage discharge on the electrolysis process was used as a catalyst [15].…”

Section: Introductionmentioning

confidence: 99%

Effect of Nickel Nanopowder on the Thermal Degradation of Coal Tar Distillate

Kim¹,

Байкенов²,

Ibishev³

et al. 2022

Bull. of the Kar. Univ. "Chem". Ser.

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Regularities of influence of nickel nanpowder 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 <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 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 are ensured by the high values of correlation coefficients.

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Section: Introductionmentioning

confidence: 99%