Zr-doped titanium lithium ion sieve and EP-granulated composite: Superb adsorption and recycling performance--颗粒学报PARTICUOLOGY

Zhou, S., Guo, X., Yan, X., Chen, Y., & Lang, W. (2022). Zr-doped titanium lithium ion sieve and EP-granulated composite: Superb adsorption and recycling performance. Particuology, 69, 100-110. https://doi.org/10.1016/j.partic.2021.12.002

Zr-doped titanium lithium ion sieve and EP-granulated composite: Superb adsorption and recycling performance

Suyu Zhou, Xiaojing Guo ^*, Xi Yan, Yan Chen, Wanzhong Lang ^*

The Education Ministry Key Laboratory of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Department of Chemistry and Chemical Engineering, Shanghai Normal University, Shanghai 200234, China

10.1016/j.partic.2021.12.002

Volume 69, October 2022, Pages 100-110

Received 23 October 2021, Revised 27 November 2021, Accepted 2 December 2021, Available online 14 December 2021, Version of Record 24 December 2021.

E-mail: guoxj@shnu.edu.cn; wzlang@shnu.edu.cn

Highlights

• Preparation process of HZrTO is pretty suitable for large-scale fabrication.

• HZrTO showed high adsorption capacity and selectivity towards Li⁺.

• HZrTO and EP-granulated composite showed excellent recycling performance.

Abstract

Lithium ion sieve (LIS) has attracted great attention due to its high adsorption selectivity towards Li⁺. Herein, a new type of Zr-doped Ti-LIS (HZrTO) was synthesized by a simple calcination method. The adsorption capacity increased from 56.3 mg g⁻¹ (before doping) to 93.2 mg g⁻¹ after doping in LiOH solution (lithium 1.8 g L⁻¹). The adsorption isotherm and adsorption kinetics of HZrTO accord with the Langmuir isotherm and the pseudo-second-order kinetic equation, respectively. Batch experiments showed that HZrTO has good stability and selectivity. In addition, HZrTO was granulated via epoxy resin (E-12), and the obtained granular adsorbent showed good adsorption capacity, excellent stability and high selectivity towards Li⁺.

Graphical abstract

Keywords

Lithium ion sieve; Lithium titanium oxide; Zr-doped; Granulation

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