Preparation method of nanotube-shaped manganite lithium ion sieve absorbent

A manganese oxide and lithium ion technology is applied in the field of preparation of nano-tubular manganese oxide lithium ion sieve adsorbent, which can solve the problems of single adsorbent shape, low adsorption capacity, small specific surface area, etc., and achieve high-efficiency cycle Utilize performance, reduce production costs, and source a wide range of effects
CN109078601AInactive Publication Date: 2018-12-25QINGHAI NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGHAI NORMAL UNIV
Publication Date
2018-12-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the field of preparation of inorganic materials (manganese oxide series), in particular to a preparation method of a nanotube-shaped manganite lithium ion sieve absorbent. Thepreparation method comprises the following four steps: preparing gamma-MnOOH; synthesizing LiMnO2; preparing a lithium ion sieve precursor Li4Mn5O12; and preparing a lithium ion sieve absorbent H4Mn5O12. The preparation method is simple, and the production cost for an existing method used at present can be reduced. The prepared lithium ion sieve adsorber H4Mn5O12 has a nanotube-shaped morphology,regular thorn-shaped substances grow on the surface of the lithium ion sieve adsorber H4Mn5O12, the specific surface area is large and is 90.979-92.997 m<2> / g, the lithium ion sieve adsorber with thespecial morphology has large adsorption capacity to lithium ions and high adsorption rate, wherein the adsorption capacity is 14.0-37.0 mg / g, the nanotube-shaped manganite lithium ion sieve absorbentis environmentally friendly, and has high-efficiency recycling property, and industrialized production is easy to realize. The preparation method of the nanotube-shaped manganite lithium ion sieve absorbent can be used for extracting lithium ions in an alkali metal competition system such as a salt lake.
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Description

technical field

[0001] The invention relates to the field of preparation of inorganic materials (manganese oxide series), in particular to a preparation method of a nanotube manganese oxide lithium ion sieve adsorbent. Background technique

[0002] my country's salt lake Li + Abundant resources, research on how to extract and isolate Li from salt lakes + The significance is very significant. Currently for Li + The separation and extraction of resources mainly include precipitation, ion exchange, solvent extraction and adsorption. The precipitation method has the characteristics of simple operation, high efficiency and high purity, but it needs to evaporate a large amount of water in the early brine treatment process, which leads to high time cost, high energy consumption and complicated process, and it is not easy to treat brine containing a large amount of alkaline earth metals, especially Not suitable for treating low-concentration lithium-containing brine. The ion ex...

Claims

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