Vol.9, No.9, 2021, pp.1541-1553, doi:10.32604/jrm.2021.015514
OPEN ACCESS
ARTICLE
Effect of Doped Alkali Metal Ions on the SO2 Capture Performance of MnO2 Desulfurization Materials at Low Temperature
  • Xing Li1,3, Yugo Osaka2,*, Hongyu Huang1, Takuya Tsujiguchi2, Akio Kodama2
1 Guangzhou Institute of Energy Conversion, Chinese Academy of Science, Guangzhou, 510640, China
2 School of Mechanical Engineering, College of Science and Engineering, Kanazawa University, Kanazawa, 9201192, Japan
3 School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing, 211800, China
* Corresponding Author: Yugo Osaka. Email: -u.ac.jp
(This article belongs to this Special Issue: New Trends in Sustainable Materials for Energy Conversion, CO2 Capture and Pollution Control)
Received 24 December 2020; Accepted 27 January 2021; Issue published 23 April 2021
Abstract
Sulfur dioxide (SO2) emissions from diesel exhaust pose a serious threat to the environment and human health. Thus, desulfurization technology and the performance of desulfurization materials must be improved. In this study, MnO2 was modified with various alkali metal ions using the impregnation method to enhance its SO2 capture performance. The composites were characterized intensively by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction spectroscopy, and Brunauer-Emmett-Teller theory. The SO2 capture performance of these composites were measured via thermogravimetry, and the effect of doping with alkali metal ions on the SO2 capture performance of MnO2 was investigated. Results showed that the SO2 capture performance of MnO2 could be enhanced by doping with alkali metal ions, and the MnO2 composite doped with LiOH (2.0 mol/L) had the best SO2 capture capacity (124 mgSO2/gMaterial), which was 18% higher than that of pure MnO2. Moreover, the type and concentration of alkali metal ions had varying effects on the SO2 capture performance of MnO2. In our experiment, the SO2 capture performance of the MnO2 doped with NaOH, LiCl, Na2CO3, K2CO3, and Li2CO3 composites were worse than that of pure MnO2. Therefore, the influences of the type and concentration of alkali metal ions to be doped into desulfurization materials must be considered comprehensively.
Keywords
Sulfur dioxide capture; desulfurization materials; manganese dioxide; alkali metal ions doped
Cite This Article
Li, X., Osaka, Y., Huang, H., Tsujiguchi, T., Kodama, A. (2021). Effect of Doped Alkali Metal Ions on the SO2 Capture Performance of MnO2 Desulfurization Materials at Low Temperature. Journal of Renewable Materials, 9(9), 1541–1553.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.