CHANGES OF SURFACE CHARACTERISTICS AND PORE SIZE DISTRIBUTION OF PETROLEUM COKE DURING ITS CALCINATION IN THE PRESENCE OF POTASSIUM HYDROXIDE-Reference-Cited by-同舟云学术

CHANGES OF SURFACE CHARACTERISTICS AND PORE SIZE DISTRIBUTION OF PETROLEUM COKE DURING ITS CALCINATION IN THE PRESENCE OF POTASSIUM HYDROXIDE

Published:2023-09-07 Issue:2 Volume: Page:101-107
ISSN:2710-3900
Container-title:Herald of Polotsk State University. Series B. Industry. Applied Sciences
language:
Short-container-title:Herald of Polotsk State University. Series B. Industry. Applied Sciences

Author:

YUKHNO D.¹^ORCID,YERMAK A.¹^ORCID,YEMELYANOVA V.¹^ORCID

Affiliation:

1. Euphrosyne Polotskaya State University of Polotsk

Abstract

Change of surface properties and pore distribution in petroleum coke at carbonization stage at 900 °C in presence of potassium hydroxide has been studied. CO2 adsorption and desorption isotherms at 298 K have been obtained for samples of raw and carbonized petroleum coke without and with potassium hydroxide addition. For pore shape and size distribution analysis GCMC (Grand Canonical Monte Carlo) computer simulation method has been used. Regularity of changes in volume, specific surface area and distribution of cylindrical and slit-shaped pores depending on the amount of potassium hydroxide added prior to carbonization stage in petroleum coke has been revealed. Extreme dependence of change in specific surface area and pore volume on potassium hydroxide content in carbonized coke has been identified. It has been found that addition of potassium hydroxide of less than 50% wt. reduces pore quantity and specific surface area of carbonized coke. The main contribution to the coke specific surface area is made by slit-shaped and cylindrical mesopores, as well as cylindrical macropores. It has been shown that by varying the amount of potassium hydroxide added to petroleum coke prior to its carbonization it is possible to regulate the formed pores distribution in terms of shape and size.

Publisher

Polotsk State University

Reference8 articles.

1. Yukhno, D.S., Ermak, A.A. & Syubareva, E.V. (2022). Izuchenie svoistv prokalennogo neftyanogo koksa, poluchennogo iz distillyatnogo i ostatochnogo syr'ya [Study of the properties of calcined petroleum coke obtained from distillate and residual raw materials]. Vestnik Polotskogo gosudarstvennogo universiteta. Seriya B. Promyshlennost'. Prikladnye nauki [Bulletin of the Polotsk State University. Series B. Industry. Applied Science], 10(46), 110–114. (In Russ., abstr. in Engl.)

2. Farberova, E.A., Maksimov, A.S., Tin'gaeva, E.A., Shirkunov, A.S., Ryabov, V.G. & Strelkov, V.A. (2021). Issledovanie vozmozhnosti pererabotki neftyanogo koksa c povyshennym soderzhaniem letuchikh veshchestv v uglerodnye sorbenty [Investigation of the possibility of processing petroleum coke with a high content of volatile substances into carbon sorbents]. Izvestiya vysshikh uchebnykh zavedenii. Seriya «Khimiya i khimicheskaya tekhnologiya» [News of higher educational institutions.

3. Series “Chemistry and Chemical Technology”], 64(4), 92–99. DOI: 10.6060/ivkkt.20216404.6331 (In Russ., abstr. in Engl.)

4. Strelkov, V.A., Shirkunov, A.S., Ryabov, V.G., Chuchalina, A.D., Shneider, A.V., Lokteev, D.V. & Kifel', N.D. (2021). Vliyanie kharakteristik svyazuyushchikh na parametry poristoi struktury granulirovannykh aktivnykh uglei na baze neftyanykh koksov [Influence of characteristics of binders on the parameters of the porous structure of granulated active carbons based on petroleum cokes]. Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Khimicheskaya tekhnologiya i biotekhnologiya [Bulletin of the Perm National Research Polytechnic University. Chemical technology and biotechnology], (1), 66–81. DOI: 10.15593/2224-9400/2021.1.06 (In Russ., abstr. in Engl.)

5. Kugatov, P.V. & Zhirnov, B.S. (2020). Formovannyi uglerodnyi adsorbent na osnove aktivirovannogo gidroksidom kaliya neftyanogo koksa [Molded carbon adsorbent based on potassium hydroxide-activated petroleum coke]. Khimiya i tekhnologiya topliv i masel [Chemistry and technology of fuels and oils], (3), 22–25. (In Russ., abstr. in Engl.)