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A fast adsorption and desorption adsorbent, preparation and application in lithium/rubidium adsorption

An adsorbent and fast technology, applied in the direction of alkali metal oxides/hydroxides, other chemical processes, chemical instruments and methods, etc., can solve the problems of slow adsorption and analysis speed of adsorbents, low adsorption capacity, and dissolution loss of adsorbents, etc. problems, to achieve the effect of fast adsorption rate, simple production process and fast resolution rate

Active Publication Date: 2021-03-23
西安金藏膜环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the defects and deficiencies of the existing preparation technology, the purpose of the present invention is to provide a fast adsorbent, a preparation method and an application for adsorbing rubidium ions or lithium ions, so as to solve the problems of slow adsorption and analysis speed and low adsorption capacity of the existing adsorbents. , Solvent loss and other problems in the repeated use of adsorbents

Method used

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  • A fast adsorption and desorption adsorbent, preparation and application in lithium/rubidium adsorption
  • A fast adsorption and desorption adsorbent, preparation and application in lithium/rubidium adsorption

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preparation example Construction

[0029] The present invention discloses a method of preparing a rapid adsorbent, specifically comprising: a powder adsorbent (such as a powder-shaped lithium ion adaidant or a ionizing agent) with a hydrophilic polymer, water directly, heat dissolution formation A homogeneous liquid solid mixture, and in a droplet formation in a phase converter, a spherical primative adsorbent is formed by a solution phase; the primary ecosective agent is added to the alkaline solution of epitoxne chloropropane to carry out chemical crosslinking reactions. To get a rapid adsorbent.

[0030] The rapid adsorbent prepared by the present invention is mainly used to leak lithium residue from seawater, brine, lithium cloudic acid, lithium carbonate, and lithium ions, etc., adsorbed extracting ion or lithium ions.

Embodiment 1

[0033] 10 g of hydroxyethyl cellulose and 10 g of lithium ion sieve absorbent precursor Li 1.6 Mn 1.6 O 4Mixing, then heated to 50 g of water to 100 ° C to form a uniformly viscous liquid solid solution, manually pressed with a syringe and dripped into a phase conversion tetrahydrofuran solution, and the phase conversion reaction was 3 min and became spherical solid particles to obtain an initial ecology. Lithium ion spherical adsorbent.

[0034] After drying the primary ecological spherical adsorbent under negative pressure of 60 ° C, 0.1 MPa, the mass concentration of the mass concentration of 5% is 10% aqueous sodium hydroxide solution, heated at 50 ° C for 30 min After removal, a spherical high hydrophilic lithium ion adaptive is obtained.

[0035] The morphology of the adsorbent is like figure 1 Distance figure 1 (a) an enlarged surface topographical view of 500 times the adsorbent, figure 1 (b) is an enlarged surface topographical view of 1000 times the adsorbent.

[0036...

Embodiment 2

[0038] 10 g of carboxymethylcellulose and 10 g manganese lithium ion sieve absorbent precursor LiMn 2 O 4 Mixing, then heated to 50 g of water to 80 ° C, stirring to form a uniformly viscous liquid solid solution, manually pressed with a syringe and dripped into a phase conversion tetrahydrofuran solution, and the phase conversion reaction was 3 min and became a spherical solid particle to obtain an initial ecology. Lithium ion spherical adsorbent.

[0039] After drying the primary ecological spherical adsorbent at 60 ° C, 0.1 MPa under pressure, it was added to 10% aqueous sodium hydroxide solution having a mass volume ratio of 5% epoxyhydrochloride, and heated at 50 ° C for 60 min, After removal, a spherical high hydrophilic lithium ion adaptive agent was obtained.

[0040] The morphology of the adsorbent is like figure 2 Distance figure 2 (a) an enlarged surface topographical view of 500 times the adsorbent, figure 2 (b) is an enlarged surface topographical view of 1000 times t...

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Abstract

The invention discloses an adsorbent capable of being fast adsorbed and analyzed, preparation of the adsorbent and application of the adsorbent to lithium / rubidium adsorption. A powder adsorbent is mixed with a hydrophilic polymer and water; the mixture is heated and dissolved into a sticky liquid solid mixture; the mixture is dropped into a phase conversion agent in a liquid drop form; through solution phase conversion, a spherical nascent state adsorbent is formed; the nascent state adsorbent is subjected to low-temperature pressure reduction and drying, and is then added into a solution containing a chemical cross-linking agent for cross-linking reaction to obtain a high-hydrophilicity adsorbent. The method provided by the invention has the advantages that the operation process is simple and convenient; the raw materials are cheap and can be easily obtained. The prepared high-hydrophilicity adsorbent has the advantages of stable property, low soluble loss rate and high adsorption and analysis speed.

Description

Technical field [0001] The present invention belongs to the technical field of adsorbent preparation, and more particularly to a rapid adsorption analysis of adsorbent, preparation and application of lithium / 铷 adsorption. Background technique [0002] Lithium metal and its compounds play an increasingly important role in the national economy and national defense construction, more than 80% of lithium resources stored in salt lake brine and seawater, so the research of lithium salt in salt lakes has a significant study of lithium resources. Strategic significance. Ion sieve absorption method Extraction of lithium has the characteristics of cycle stability, high selectivity, adsorption, etc., and has become one of the most industrial prospects of lithium in salt lake in my country. However, since the ion sieve adsorption agent is polypage, the fluidity and permeability are poor, and there is a difficulty of fixing lithium directly for fixing bed adsorption, the formation of ion s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/04B01J20/28B01J20/30
CPCB01J20/0218B01J20/0259B01J20/041B01J20/28019
Inventor 王磊孟晓荣黄丹曦乔茹楷陈铖吴浩霍姗姗
Owner 西安金藏膜环保科技有限公司
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