Influence of the Demineralization of Naturally Oxidized Coal on Sorbent Texture
- Authors: Fedorova N.I.1, Dudnikova Y.N.1, Zykov I.Y.1, Kozlov A.P.1, Ismagilov Z.R.1
-
Affiliations:
- Federal Research Center on Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences
- Issue: Vol 61, No 8 (2018)
- Pages: 297-300
- Section: Chemistry
- URL: https://journals.rcsi.science/1068-364X/article/view/226452
- DOI: https://doi.org/10.3103/S1068364X18080045
- ID: 226452
Cite item
Abstract
The influence of preliminary demineralization of coal by aqueous solutions of hydrochloric and hydrofluoric acid on the texture of sorbents produced by thermolysis in the presence of potassium hydroxide is investigated (when the mass ratio of the KOH and the coal is 2.0). The results show that successive treatment of coal with 10% hydrochloric and 10% hydrofluoric acid decreases the coal’s ash content to a residual value of about 0.6%. In thermolysis, a sorbent with an ash content of 1.5% is obtained on thermolysis. In comparison with sorbent from untreated coal, the sorbent from the demineralized coal is characterized by higher specific surface and total pore volume. In the treated coal, more than 70% of the pore space consists of micropores.
Keywords
About the authors
N. I. Fedorova
Federal Research Center on Coal and Coal Chemistry, Siberian Branch,Russian Academy of Sciences
Author for correspondence.
Email: fedorovani@iccms.sbras.ru
Russian Federation, Kemerovo
Yu. N. Dudnikova
Federal Research Center on Coal and Coal Chemistry, Siberian Branch,Russian Academy of Sciences
Author for correspondence.
Email: dudnikova.yuliya80@mail.ru
Russian Federation, Kemerovo
I. Yu. Zykov
Federal Research Center on Coal and Coal Chemistry, Siberian Branch,Russian Academy of Sciences
Author for correspondence.
Email: zyak.kot@mail.ru
Russian Federation, Kemerovo
A. P. Kozlov
Federal Research Center on Coal and Coal Chemistry, Siberian Branch,Russian Academy of Sciences
Author for correspondence.
Email: KozlovAP@iccms.sbras.ru
Russian Federation, Kemerovo
Z. R. Ismagilov
Federal Research Center on Coal and Coal Chemistry, Siberian Branch,Russian Academy of Sciences
Author for correspondence.
Email: zinfer1@mail.ru
Russian Federation, Kemerovo