Preparation method and application of modified mesoporous hollow silica sphere adsorbent

A technology of hollow silicon and adsorbent, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as separation, purification and deep processing of products, increase the complexity of purification process, etc., and achieve unique physical Chemical properties, good monodispersity, high selectivity adsorption separation effect
CN106902781BInactive Publication Date: 2019-06-28JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2019-06-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of material preparation and separation, and relates to preparation of lithium / rubidium ion adsorbing materials, in particular to a preparation method and application of a modified hollow mesoporous silicon sphere adsorbent. Hollow mesoporous silicon spheres (HSs) are synthesized, a manganese-based lithium ion sieve (HMO) is supported on the surface of the hollow mesoporous silicon spheres (HS), and finally, 3-aminopropyltriethoxysilane (APTES) is modified to form the modified hollow mesoporous silicon sphere adsorbent. Synthetic process steps are simple, the prepared micro-nano hollow mesoporous silicon spheres have the advantages of large specific surface area, modifiable surface hydroxyl, good mono-dispersity, good particle size and duct size adjustability and the like, the surface of the micro-nano hollow mesoporous silicon spheres with a high specific surface is modified, and the adsorbing capacity of the materials is greatly improved. The manganese-based lithium ion sieve and the APTES are compounded with the micro-nano hollow mesoporous silicon spheres to obtain the modified hollow mesoporous silicon sphere adsorbent with unique physical and chemical properties, and lithium / rubidium ions can be efficiently adsorbed and separated in a high-selectivity manner.
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Description

technical field

[0001] The invention belongs to the technical field of material preparation and separation, and relates to the preparation of lithium / rubidium ion adsorption materials, in particular to a preparation method and application of a modified mesoporous hollow silicon sphere adsorbent. Background technique

[0002] China's salt lakes are mainly distributed in the Qinghai-Tibet Plateau, and the lake water contains more than 59 elements, among which B has a close symbiotic relationship with Li, Cs, K, and Rb, and its content is roughly positively correlated with the increase in the salinity of the lake water. The carbonate-type salt lakes in Tibet are distributed in a belt shape, and are divided into two salt lake sub-zones, Gangnan and Gangbei, with the Gangdise Mountains-Nyainqentanglha Mountains as the boundary. The salt lakes in the Gangnan subbelt are small in scale and low in lithium content; the salt lakes in the west part of the Gangbei subbelt are characteri...

Claims

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