Preparation of 3DON Li₄Ti₅O₁₂ and Behavior of Li⁺ Ion Exchange

Abstract:

The three-dimensionally ordered nanopores 3DON lithium ionic sieve precursors Li₄Ti₅O₁₂ were synthesized by homemade polymethyl methacrylate (PMMA) colloidal crystal templates filled with lithium acetate, tetrabutyl titanate, oxalic acid and critric acid mixed solution after melt crystallization. The corresponding LiTi-H as a new lithium ion-sieve was obtained after the dilute hydrochloric acid treatment. The morphology and structure of the material were analyzed with SEM and X-ray diffraction (XRD), and saturated exchange capacity, adsorptive selectivity and reusability characterized the ion exchange properties. It turns out that PMMA colloidal crystal templates and 3DON precursors Li₄Ti₅O₁₂ arranged orderly and macro pore diameter was approximately 80nm. What’s more, Li₄Ti₅O₁₂ were spinel phase and lithium ionic sieve LiTi-H had a high selectivity for Li⁺, saturated exchange capacity for Li, 56.81mg (Li⁺).g^-1 and good acid stability.

• Periodical: Applied Mechanics and Materials (Volume 618)
• Pages: 175-179
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.618.175
• Online since: August 2014
• Authors: Dian Quan Dong*, Wei Xing Wang, Mi Lan Wang
• Keywords: 3DON, Ion Exchange, Ionic Sieve, Lithium

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