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Preparation of coal gasification fine slag-based supercapacitive carbon using hydrothermal deashing and alkali activation

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Abstract

The coal gasification is the key process of clean usage of coal resource, which inevitably produces a large amount of coal gasification slag (CGS), and causes serious environmental pollution and ecological damage. The high ash content of coal gasification fine slag (CGFS) prevents the efficient utilization of residual carbon in CGFS. In this work, carbon-rich component was obtained by acid leaching under hydrothermal condition and alkali washing. The eluent is rich in Al and Si elements, which can be used to prepare polyaluminum chloride and porous ceramics. The residual inorganic component after the treatment of acid and alkali is electrochemical inertness, which has not adverse effect in the capacitive performance of electrode materials. Then, the activated carbon (AC) electrode materials were prepared successfully by different activation conditions, using carbon-rich component. The results show that the AC-800-60 has the biggest specific surface area of 1267.81 m2/g and a total pore volume of 0.63 cm3/g, which are beneficial for energy storage and ion transport efficiency of electrode materials AC-800-60 also shows the high-specific capacitance of 226.24 F/g at current density of 1 A/g, which is obviously higher than the commercial Yp-50 AC. After 10,000 cycles of charge–discharge process, the specific capacitance has 101.7% capacitance retention, indicating its high stability.

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References

  1. R.P. Verma, R. Mandal, S.K. Chaulya et al., Contamination of groundwater due to underground coal gasification. Int. J. Water Resour. Environ. Eng. 6(12), 303–311 (2014)

    Article  Google Scholar 

  2. B. Cxga, C. Yhj, B. Hjca et al., Performance of Hg0 removal from coal-fired flue gas over coal gasification slag. J. Fuel Chem. Technol. 49(4), 455–464 (2021)

    Article  Google Scholar 

  3. X. Liu, Z. Jin, Y. Jing et al., Review of the characteristics and graded utilisation of coal gasification slag. Chin. J. Chem. Eng. 35, 92–106 (2021)

    Article  ADS  Google Scholar 

  4. A. Acosta, I. Iglesias, M. Aineto et al., Utilisation of IGCC slag and clay steriles in soft mud bricks (by pressing) for use in building bricks manufacturing. Waste Manage. 22(8), 887–891 (2002)

    Article  CAS  Google Scholar 

  5. A. Nib, B. Jgr, C. Bew et al., Construction material properties of high temperature arc gasification slag as a Portland cement replacement. J. Clean. Prod. 196, 1266–1272 (2018)

    Article  Google Scholar 

  6. W. Ai, J. Zhang, S. Miao et al., A low-cost and high-value reinforcing filler for styrene butadiene rubber fabricated by a pneumatic separation technique from coal gasification fine slag. Polym. J. 52(5), 1–11 (2019)

    Google Scholar 

  7. M. Miyake, Y. Kimura, T. Ohashi et al., Preparation of activated carbon–zeolite composite materials from coal fly ash. Microporous Mesoporous Mater. 112(1–3), 170–177 (2008)

    Article  CAS  Google Scholar 

  8. Y.Y. Gu, X.C. Qiao, A carbon silica composite prepared from water slurry coal gasification slag. Microporous Mesoporous Mater. 276, 303–307 (2019)

    Article  CAS  Google Scholar 

  9. Y. Kang, X. Wei, G. Liu et al., CO2-hierarchical activated carbon prepared from coal gasification residue: adsorption equilibrium, isotherm, kinetic and thermodynamic studies for methylene blue removal. Chin. J. Chem. Eng. 28(6), 7 (2020)

    Article  Google Scholar 

  10. D. Zhu, B. Xue, Y. Jiang et al., Using chemical experiments and plant uptake to prove the feasibility and stability of coal gasification fine slag as silicon fertilizer. Environ. Sci. Pollut. Res. 26(6), 5925–5933 (2019)

    Article  CAS  Google Scholar 

  11. S. Liu, X. Chen, W. Ai et al., A new method to prepare mesoporous silica from coal gasification fine slag and its application in methylene blue adsorption. J. Clean. Prod. 212, 1062–1071 (2019)

    Article  CAS  Google Scholar 

  12. D. Zhu, J. Zuo, Y. Jiang et al., Carbon-silica mesoporous composite in situ prepared from coal gasification fine slag by acid leaching method and its application in nitrate removing. Sci. Tot. Environ. 707, 136102 (2020)

    Article  CAS  Google Scholar 

  13. F. Teoh, A. Veksha, V. Chia et al., Nickel-based catalysts for steam reforming of naphthalene utilizing gasification slag from municipal solid waste as a support. Fuel 254, 115561 (2019)

    Article  CAS  Google Scholar 

  14. F. Han, Y. Gao, Q. Huo et al., Characteristics of vanadium-based coal gasification slag and the NH3-selective catalytic reduction of NO. Catalysts 8(8), 327 (2018)

    Article  Google Scholar 

  15. S. Wu, S. Huang, Y. Wu et al., Characteristics and catalytic actions of inorganic constituents from entrained-flow coal gasification slag. J. Energy Inst. 88(1), 93–103 (2015)

    Article  CAS  Google Scholar 

  16. S. Wu, S. Huang, L. Ji et al., Structure characteristics and gasification activity of residual carbon from entrained-flow coal gasification slag. Fuel 122, 67–75 (2014)

    Article  CAS  Google Scholar 

  17. S. Li, K.J. Whitty, Physical phenomena of char–slag transition in pulverized coal gasification. Fuel Process. Technol. 95, 127–136 (2012)

    Article  CAS  Google Scholar 

  18. W. Tao, G. Mei, E. Lester et al., Characterisation of residual carbon from entrained-bed coal water slurry gasifiers. Fuel 86(7–8), 972–982 (2007)

    Google Scholar 

  19. N.J. Wagner, R.H. Matjie, J.H. Slaghuis et al., Characterization of unburned carbon present in coarse gasification ash. Fuel 87(6), 683–691 (2008)

    Article  CAS  Google Scholar 

  20. Z. Miao, Z. Guo, G. Qiu et al., Synthesis of activated carbon from high-ash coal gasification fine slag and their application to CO2 capture. J. CO2 Util. 50(13), 101585 (2021)

    Article  CAS  Google Scholar 

  21. W. Li, X. Yang, Z. Chen et al., Synthesis and structure regulation of armor-wearing biomass-based porous carbon: suppression the leakage current and self-discharge of supercapacitors. Carbon 196, 136–145 (2022)

    Article  CAS  Google Scholar 

  22. S.R. Yousefi, H.A. Alshamsi, O. Amiri, M. Salavati-Niasar, Synthesis, characterization and application of Co/Co3O4 nanocomposites as an effective photocatalyst for discoloration of organic dye contaminants in wastewater and antibacterial properties. J. Mol. Liq. 337, 116405 (2021)

    Article  CAS  Google Scholar 

  23. K.M. Steel, J. Besida, T.A. O’Donnell, D.G. Wood, Production of ultra clean coal: Part I—dissolution behaviour of mineral matter in black coal toward hydrochloric and hydrofluoric acids. Fuel Process. Technol. 70(3), 193–219 (2001)

    Article  CAS  Google Scholar 

  24. A. Wasilczyk, ULTRA CLEAN COAL FROM POLISH COAL DEPOSITS, in 17th International Multidisciplinary Scientific GeoConference SGEM2017 (2017). https://doi.org/10.5593/sgem2017/42/S17.082

  25. K.M. Steel, J.W. Patrick, The production of ultra clean coal by chemical demineralisation. Fuel Energy Abstr. 70(3), 193–219 (2001)

    CAS  Google Scholar 

  26. Z. Ryu, J. Zheng, M. Wang et al., Characterization of pore size distributions on carbonaceous adsorbents by DFT. Carbon 37(8), 1257–1264 (1999)

    Article  CAS  Google Scholar 

  27. W. Gao, W. Ying, Y. Dou et al., Synthesis of partially graphitic ordered mesoporous carbons with high surface areas. Adv. Energy Mater. 1(1), 115–123 (2011)

    Article  CAS  Google Scholar 

  28. L. Wei, Y. Tang, Z. Sun et al., A simple approach of constructing sulfur-containing porous carbon nanotubes for high-performance supercapacitors. Carbon 115, 754–762 (2017)

    Article  Google Scholar 

  29. J.G. Wang, Y. Yang, Z.H. Huang et al., A high-performance asymmetric supercapacitor based on carbon and carbon–MnO2 nanofiber electrodes. Carbon 61, 190–199 (2013)

    Article  CAS  Google Scholar 

Download references

Acknowledgements

Authors thank for financial support by Shaanxi Province Technological Innovation Guidance Special (2021QFY04-01) and technical support by Analytical Instrumentation Center of XUST.

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Xi’an University of Science and Technology, 2021QFY04-01,shanxin Xiong

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, 710054, People’s Republic of China

    Shanxin Xiong, Wei Zhang, Yukun Zhang, Xueni Zhao, Nana Yang, Fengyan Lv, Xiaoqin Wang, Chenxu Wang & Zhen Li

  2. School of Materials Science and Engineering, Tongji University, Shanghai, 201804, People’s Republic of China

    Jun Cheng

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  1. Shanxin Xiong
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  2. Wei Zhang
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Contributions

WZ contributed to conceptualization, investigation, methodology, data curation, and writing of the original draft. SX contributed to supervision, funding acquisition, and reviewing and editing of the manuscript. JC contributed to visualization and formal analysis of the manuscript. YZ contributed to methodology and resources. XZ contributed to conceptualization of the manuscript. NY contributed to project administration of the manuscript. FL contributed to supervision of the manuscript. XW contributed to funding acquisition of the manuscript. CW and ZL contributed to validation of the manuscript. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Shanxin Xiong.

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Xiong, S., Zhang, W., Cheng, J. et al. Preparation of coal gasification fine slag-based supercapacitive carbon using hydrothermal deashing and alkali activation. J Mater Sci: Mater Electron 35, 99 (2024). https://doi.org/10.1007/s10854-023-11825-5

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