Skip to main content
SpringerLink
Log in

Influence of the Demineralization of Naturally Oxidized Coal on Sorbent Texture

  • CHEMISTRY
  • Published:
Coke and Chemistry Aims and scope Submit manuscript

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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1.
Fig. 2.
Fig. 3.

Similar content being viewed by others

REFERENCES

  1. Mukhin, V.M. and Klushin, V.N., Proizvodstvo i primenenie uglerodnykh sorbentov (Production and Application of Carbon Sorbents), Moscow: Ross. Khim.-Tekhnol. Univ. Im. D.I. Mendeleeva, 2012.

    Google Scholar 

  2. Fenelonov, V.B., Vvedenie v fizicheskuyu khimiyu formirovaniya supramolekulyarnoi struktury adsorbentov i katalizatorov (Introduction to Physical Chemistry of the Formation of Supramolecular Structure of Adsorbents and Catalysts), Novosibirsk: Sib. Otd., Ross. Akad. Nauk, 2002.

    Google Scholar 

  3. Gyul’maliev, A.M., Golovin, G.S., and Gladun, T.G., Teoreticheskie osnovy khimii uglya (Theory of Coal Chemistry), Moscow: Mosk. Gos. Gorn. Univ., 2003.

    Google Scholar 

  4. Skripchenko, G.B., Methodology for studying molecular and supramolecular structures of coals and carbonaceous materials, Solid Fuel Chem., 2009, vol. 43, no. 5, p. 333.

    Article  Google Scholar 

  5. Tamarkina, Yu.V., Bovan, L.A., and Kucherenko, V.A., Properties of the solid thermolysis products of brown coal impregnated with an alkali, Solid Fuel Chem., 2008, vol. 42, no. 4, pp. 202–207.

    Article  Google Scholar 

  6. Manina, T.S., Fedorova, N.I., and Ismagilov, Z.R., Producing carbon sorbents from naturally oxidized Kuznets Basin coal by mechanical activation, Coke Chem., 2015, vol. 58, no. 8, pp. 308–311.

    Article  Google Scholar 

  7. Kozlov, A.P., Zykov, I.Yu., Dudnikova, Yu.N., et al., Synthesis of carbon sorbents from naturally oxidized Barzas coal impregnated with potassium hydroxide, Vestn. Kuzbask. Gos. Tekh. Univ., 2017, no. 4, pp. 170–175.

  8. Tamarkina, Yu.V., Kucherenko, V.A., and Shendrik, T.G., Interrelation of gas generation and pore formation on the alkaline activation of brown coal, Solid Fuel Chem., 2015, vol. 49, no. 2, pp. 91–98.

    Article  CAS  Google Scholar 

  9. Kuznetsov, P.N., Kuznetsova, L.I., and Kutikhina, E.A., Effect of the decationization of brown coal from the Kansk–Achinsk Basin on the physicochemical properties of the resulting sorbents, Solid Fuel Chem., 2008, vol. 42, no. 3, pp. 153–159.

    Article  Google Scholar 

  10. Kuznetsov, P.N., Kuznetsova, L.I., Kolesnikova, S.M., et al., Effect of the composition of the initial material and the production method of carbon sorbents on their texture characteristics and sorption activity, Khim. Tekhnol., 2008, vol. 9, no. 10, pp. 526–531.

    Google Scholar 

  11. Mukhin, V.M., Zubova, I.D., Chumakov, V.P., and Zubova, I.N., RF Patent 2359903, 2009.

  12. Shpirt, M.Ya., Kler, V.R., and Pertsikov, I.Z., Neorganicheskie komponenty tverdykh topliv (Inorganic Components of Solid Fuels), Moscow: Khimiya, 1990.

    Google Scholar 

  13. Vorob’ev, A.E. and Mozol’kova, A.V., Mineral inclusions of coal seams: original forms and basic methods of dissolution, Gorn. Inf.-Anal. Byull., 2007, no. 3, pp. 141–148.

  14. Kuznetsov, B.N., Kataliz khimicheskikh prevrashchenii uglya i biomassy (Catalysis of Chemical Transformations of Coal and Biomass), Novosibirsk: Nauka, 1990.

    Google Scholar 

Download references

ACKNOWLEDGMENTS

Financial support was provided by the Russian Ministry of Education (contract identifier RFMEFI61317X0079), within the framework of the federal program for priority research in Russia between 2014 and 2020.

Author information

Authors and Affiliations

  1. Federal Research Center on Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia

    N. I. Fedorova, Yu. N. Dudnikova, I. Yu. Zykov, A. P. Kozlov & Z. R. Ismagilov

Authors
  1. N. I. Fedorova
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Yu. N. Dudnikova
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. I. Yu. Zykov
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. A. P. Kozlov
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Z. R. Ismagilov
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding authors

Correspondence to N. I. Fedorova, Yu. N. Dudnikova, I. Yu. Zykov, A. P. Kozlov or Z. R. Ismagilov.

Additional information

Translated by Bernard Gilbert

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Fedorova, N.I., Dudnikova, Y.N., Zykov, I.Y. et al. Influence of the Demineralization of Naturally Oxidized Coal on Sorbent Texture. Coke Chem. 61, 297–300 (2018). https://doi.org/10.3103/S1068364X18080045

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.3103/S1068364X18080045

Keywords:

Search

Navigation