Adsorbent, method for preparing the same, and use thereof

By preparing a porous adsorbent containing alkali metal oxides, silicon oxide, phosphorus oxide, and antimony oxide, the problem of impurity ion adsorption in lithium aluminum silicon glass strengthening was solved, achieving efficient and environmentally friendly impurity ion removal, improving glass strengthening effect, and reducing production costs.

CN122164356APending Publication Date: 2026-06-09LENS TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LENS TECHNOLOGY CO LTD
Filing Date
2026-01-30
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing adsorbents cannot effectively adsorb impurity ions such as lithium, calcium, and magnesium during the chemical strengthening process of lithium aluminum silicon glass, resulting in poor strengthening effect. Furthermore, existing preparation methods are energy-intensive, costly, and cause serious pollution.

Method used

An adsorbent is prepared by using an oxide composition, including alkali metal oxides, silicon oxide, phosphorus oxide, and antimony oxide, via a sol-gel method. This forms a porous framework structure that provides exchange sites and specific adsorption sites, enabling efficient adsorption of lithium, calcium, and magnesium impurity ions.

Benefits of technology

While not affecting the lithium-ion adsorption effect, it completely removes calcium and magnesium impurity ions, improves glass strengthening effect, extends molten salt life, reduces production costs, and the preparation process is environmentally friendly and low-cost.

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Abstract

This invention discloses an adsorbent, its preparation method, and its application. The adsorbent, by mass fraction of oxides, comprises: 20%-35% alkali metal oxide R₂O, 20%-33% SiO₂, and 34%-57% M₂O₅; wherein R includes at least Na, and M includes at least P and Sb. This invention achieves highly efficient adsorption of lithium, calcium, and magnesium impurity ions in the molten salt for chemical strengthening of lithium-aluminum-silicon glass through the synergistic effect of the combination of alkali metal oxides, silicon oxide, phosphorus oxide, and antimony oxide. At a specific ratio, these four components can completely remove trace amounts of calcium and magnesium impurity ions without significantly affecting the lithium ion removal effect. This makes it highly suitable for the stable and efficient adsorption of lithium, calcium, and magnesium impurity ions in a molten salt environment, improving the chemical strengthening effect of glass, extending the life of the molten salt, and reducing production costs.
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