SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2021, Vol. 34 ›› Issue (6): 68-76.DOI: 10.1016/j.cjche.2020.09.006

• Separation Science and Engineering • 上一篇    下一篇

Preparation and adsorption performance of multi-morphology H1.6Mn1.6O4 for lithium extraction

Xiulei Li, Baifu Tao, Qingyuan Jia, Ruili Guo   

  1. Chemistry and Chemical Engineering, Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China
  • 收稿日期:2020-04-22 修回日期:2020-08-27 出版日期:2021-06-28 发布日期:2021-08-30
  • 通讯作者: Ruili Guo
  • 基金资助:
    The authors gratefully acknowledge the National Natural Science Foundation of China, (Grant No. 21868031).

Preparation and adsorption performance of multi-morphology H1.6Mn1.6O4 for lithium extraction

Xiulei Li, Baifu Tao, Qingyuan Jia, Ruili Guo   

  1. Chemistry and Chemical Engineering, Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, China
  • Received:2020-04-22 Revised:2020-08-27 Online:2021-06-28 Published:2021-08-30
  • Contact: Ruili Guo
  • Supported by:
    The authors gratefully acknowledge the National Natural Science Foundation of China, (Grant No. 21868031).

摘要: In this paper, a lithium-ion sieve (LIS) with different morphologies, such as rod-like (LIS-R), spherical (LIS-S), flower-like (LIS-F), and three-dimensional macroporous-mesoporous (LIS-3D), was prepared by hydrothermal synthesis, solid reaction, and hard-template synthesis. The results showed that the LIS with different morphologies presented great differences in specific surface area, pore volume, adsorption selectivity, and structure stability. LIS-3D with highest specific surface area and pore volume displayed the maximum adsorption capacity and adsorption rate, but the stability of LIS-3D was poor because of the manganese dissolution. By comparison, LIS-S has the best structural stability while maintaining a satisfactory adsorption capacity (35.02 mg·g-1) and adsorption rate. The LIS-S remained about 90% of the original adsorption capacity after five cycles of adsorption-desorption process. In addition, in the simulated brine system (the magnesium to lithium ratio of 400), the LIS-S exhibited the highest selectivity (αMgLi) of 425.14. In sum, the LIS-S with good morphology is a potential adsorbent for lithium extraction from brine.

关键词: Lithium-ion sieve, Morphologies, Lithium extraction, Brine, Adsorbent

Abstract: In this paper, a lithium-ion sieve (LIS) with different morphologies, such as rod-like (LIS-R), spherical (LIS-S), flower-like (LIS-F), and three-dimensional macroporous-mesoporous (LIS-3D), was prepared by hydrothermal synthesis, solid reaction, and hard-template synthesis. The results showed that the LIS with different morphologies presented great differences in specific surface area, pore volume, adsorption selectivity, and structure stability. LIS-3D with highest specific surface area and pore volume displayed the maximum adsorption capacity and adsorption rate, but the stability of LIS-3D was poor because of the manganese dissolution. By comparison, LIS-S has the best structural stability while maintaining a satisfactory adsorption capacity (35.02 mg·g-1) and adsorption rate. The LIS-S remained about 90% of the original adsorption capacity after five cycles of adsorption-desorption process. In addition, in the simulated brine system (the magnesium to lithium ratio of 400), the LIS-S exhibited the highest selectivity (αMgLi) of 425.14. In sum, the LIS-S with good morphology is a potential adsorbent for lithium extraction from brine.

Key words: Lithium-ion sieve, Morphologies, Lithium extraction, Brine, Adsorbent