Abstract: The kinetics of gasification of Sibunit synthetic carbon with oxygen is studied at T = 480-550 degrees C. The apparent activation energy of the process is E-a = 155 +/- 15 kJ/mol at a degree of gasification x below 0.7. The classical and fractal analyses of the data obtained by the transmission electron microscopy, small-angle X-ray scattering, and low-temperature nitrogen adsorption techniques are used to study variations in the structure of Sibunit carbon during its gasification. The kinetics of gasification is controlled by two competing factors: a smoothing of the carbon surface during gasification, which is accompanied by a decrease in the gasification rate, and an increase in the surface area of the pores accessible to the reactant, which, in contrast, causes an increase in the gasification rate. A Monte Carlo simulation of gasification of Sibunit carbon by reactive consumption of a deterministic fractal cluster shows that the assumptions on the chemical uniformity of the cluster surface and on the existence of a fractal system of pores make it possible to adequately model the kinetics of gasification and variations in the structure of this carbon material at x > 0.2.

Cite: Gordeeva L.G. , Prokopʹev S.I. , Okkelʹ L.G. , Zaikovskii V.I. , Kolomiichuk V.N. , Aristov Y.I.
The Kinetics of Gasification of Microporous Carbon with Oxygen: A Fractal Approach
Kinetics and Catalysis. 1997. V.38. N6. P.840-847. WOS Scopus РИНЦ ANCAN

Original: Гордеева Л.Г. , Прокопьев С.И. , Оккель Л.Г. , Зайковский В.И. , Коломийчук В.Н. , Аристов Ю.И.
Кинетика газификации микропористого угля кислородом: фрактальный подход
Кинетика и катализ. 1997. Т.38. №6. С.912-920. РИНЦ

Dates:

Submitted:

May 3, 1996

Identifiers:

Web of science:	WOS:000071180900020
Scopus:	2-s2.0-0642304034
Elibrary:	13261541
Chemical Abstracts:	1998:18792
Chemical Abstracts (print):	128:50307

Citing: Пока нет цитирований