Skip to main content
SpringerLink
Log in

Effect of an Initiating Additive of CuSO4 on Changes in the Characteristics of Brown Coal Oxidation and Pyrolysis

  • Published:
Solid Fuel Chemistry Aims and scope Submit manuscript

Abstract

The oxidation and pyrolysis of brown coal containing 5 wt % CuSO4 as an initiating additive was studied. The experiment was performed by thermogravimetry at a heating rate of 2.5 K/min in an atmosphere of air and nitrogen. The process characteristics in the pyrolysis and oxidation mode were evaluated, and the activation energy of the process was determined by the Coats–Redfern method. It was established that the addition of the initiating agent CuSO4 led to a significant decrease in the initial temperature of oxidation and pyrolysis processes to shift the reaction toward the low-temperature region. Maximum changes in the reaction initiation temperatures in the oxidation (ΔTi) and (ΔTd) pyrolysis modes were 35 and 50°С, respectively. It was established that the introduction of CuSO4 led to a decrease in the activation energy of oxidation by 7.1 kJ/mol, and ΔEa was 10 kJ/mol for the pyrolysis process. A decrease in the residence times of a sample within the limits of the sublimation of volatile substances was observed: Δti was 12 min for oxidation, and Δtd was 18 min for pyrolysis. According to mass-spectrometric analysis data, the presence of SO2 (peaks at 230 and 320°C) was detected in the oxidation and pyrolysis reaction products of modified samples; this was explained by the chemical interaction of copper sulfate with brown coal components.

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.
Fig. 4.
Fig. 5.
Fig. 6.

Similar content being viewed by others

REFERENCES

  1. Korolev, A.V. and Lomakina, N.S., Sovrem. Naukoemk. Tekhnol., 2013, no. 8, p. 125.

  2. Simonov, A.D., Fedorov, I.A., Dubinin, Yu.V., Yazykov, N.A., Yakovlev, V.A., and Parmon, V.N., Katal. Prom–sti., 2012, no. 3, p. 50.

  3. Parmon, V.N., Simonov, A.D., Sadykov, V.A., and Tikhov, S.F., Fiz. Goreniya Vzryva, 2015, vol. 51, no. 2, p. 5.

    Google Scholar 

  4. Liu, Y., Che, D., and Xu, T., Fuel Process. Technol., 2002, vol. 79, no. 2, p. 157.

    Article  CAS  Google Scholar 

  5. Zou, C., Zhao, J., Li, X., and Shi, R., J. Therm. Anal. Calorim., 2016, vol. 126, p. 1469.

    Article  CAS  Google Scholar 

  6. Gong, X., Guo, Z., and Wang, Z., Combust. Flame, 2010, vol. 157, p. 351.

    Article  CAS  Google Scholar 

  7. Yin, K., Zhou, Y.M., Yao, Q.Z., Fang, C., and Zhang, Z.W., Reac. Kinet. Mech. Catal., 2012, vol. 106, no. 2, p. 369.

    Article  CAS  Google Scholar 

  8. Zhao, G.W., Yu, W.Q., and Xiao, Y.H., Adv. Mater. Res., 2011, vol. 236, p. 660.

    Article  CAS  Google Scholar 

  9. Larionov, K.B., Mishakov, I.V., Slyusarskiy, K.V., Bolgova, D.A., and Lavrinenko, S.V., MATEC Web of Conf., 2017, vol. 141, p. 01026.

  10. Slyusarskiy, K.V., Larionov, K.B., Osipov, V.I., Yankovsky, S.A., Gubin, V.E., and Gromov, A.A., Fuel, 2017, vol. 191, p. 383.

    Article  CAS  Google Scholar 

  11. Tokareva, I.V., Mishakov, I.V., Vedyagin, A.A., Korneev, D.V., Petukhova, E.S., and Savvinova, M.E., Kompozit. Nanostrukt., 2014, vol. 6, no. 3, p. 158.

    CAS  Google Scholar 

  12. Ozbas, K.E., Kok, M.V., and Hicyilmaz, C., J. Therm. Anal. Calorim., 2003, vol. 71, p. 849.

    Article  CAS  Google Scholar 

  13. Shaikhutdinov, Sh.K., Avdeeva, L.B., Novgorodov, B.N., Zaikovskii, V.I., and Kochubey, D.I., Catal. Lett., 1997, vol. 47, no. 1, p. 35.

    Article  CAS  Google Scholar 

  14. Zhang, L., Hu, S., Chen, Q., Xiao, L., Shatir, A., Syed-Hassan, S.S.A., Jiang, L., Wang, Y., Su, S., and Xiang, J., Fuel, 2017, vol. 189, p. 178.

    Article  CAS  Google Scholar 

  15. Fangxian, L., Shizong, L., and Youzhi, C., J. Therm. Anal. Calorim., 2009, vol. 95, p. 633.

    Article  CAS  Google Scholar 

Download references

ACKNOWLEDGMENTS

This work was supported by the Ministry of Education and Science of the Russian Federation (project no. 13.7644/2017/8.9).

Author information

Authors and Affiliations

  1. National Research Tomsk Polytechnic University, 634050, Tomsk, Russia

    K. B. Larionov, I. V. Mishakov, A. A. Vedyagin & V. E. Gubin

  2. Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    I. V. Mishakov & A. A. Vedyagin

Authors
  1. K. B. Larionov
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. I. V. Mishakov
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. A. A. Vedyagin
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. V. E. Gubin
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding authors

Correspondence to K. B. Larionov, I. V. Mishakov, A. A. Vedyagin or V. E. Gubin.

Additional information

Translated by V. Makhlyarchuk

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Larionov, K.B., Mishakov, I.V., Vedyagin, A.A. et al. Effect of an Initiating Additive of CuSO4 on Changes in the Characteristics of Brown Coal Oxidation and Pyrolysis. Solid Fuel Chem. 53, 120–127 (2019). https://doi.org/10.3103/S036152191901004X

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.3103/S036152191901004X

Keywords:

Search

Navigation