Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing crown ether functionalized nanosheet through one-step Pickering double-emulsion method and lithium extraction application of crown ether functionalized nanosheet

A double-emulsion method and functionalization technology, applied in chemical instruments and methods, improvement of process efficiency, inorganic chemistry, etc., can solve problems such as improvement of adsorption selectivity, reduction of interfacial tension, polymer mechanical properties, etc., and achieve mechanical mass transfer The effect of remarkable kinetic performance and good saturated adsorption capacity

Active Publication Date: 2021-11-12
JIANGSU UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a stable polymer can be successfully prepared by the Pickering double emulsion template method, the solid particles used to stabilize the Pickering double emulsion can reduce the interfacial tension and enhance the mechanical properties of the polymer, but the selectivity of the adsorption itself needs to be improved.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing crown ether functionalized nanosheet through one-step Pickering double-emulsion method and lithium extraction application of crown ether functionalized nanosheet
  • Method for preparing crown ether functionalized nanosheet through one-step Pickering double-emulsion method and lithium extraction application of crown ether functionalized nanosheet
  • Method for preparing crown ether functionalized nanosheet through one-step Pickering double-emulsion method and lithium extraction application of crown ether functionalized nanosheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of rigid hydrogel micro-nanosheets (PMBA-PMA) rich in modifiable anhydride groups and anhydride hydrolyzable carboxyl groups on the surface and a functionalized adsorbent (PMBA-PMA-CE) capable of recognizing and trapping lithium ions

[0029] (1) First, 20g of halloysite was added to 30g of pyridine and 70g of DMF solution respectively to activate the hydroxyl group in a 50°C water bath, and then the DMF solution mixed with palmitoyl chloride was added under ice bath for grafting;

[0030] (2) Add 0.5g of HNT emulsifier prepared above, 50mg of maleic anhydride, 50mg of N,N-methylenebisacrylamide, 100μL of Irgacure-1173 photoinitiator successively in a glass bottle equipped with 6ml of toluene, Then add 4000 μL of deionized water dropwise under high-speed stirring at 15000 rpm, and after 1 min, prepare the oil-in-water-in-oil (O / W / O) double emulsion;

[0031] (3) The oil-in-water-in-oil (O / W / O) double emulsion obtained in (2) was polymerized under ultraviolet...

Embodiment 2

[0034] Rigid hydrogel micro-nanosheets (PMBA-PMA) with surface rich in modifiable anhydride groups and anhydride hydrolyzed carboxyl groups and capable of recognizing and trapping Li + Preparation of Capable Functionalized Adsorbent (PMBA-PMA-CE)

[0035] (1) First, 20g of halloysite was added to 30g of pyridine and 70g of DMF solution respectively to activate the hydroxyl group in a 50°C water bath, and then the DMF solution mixed with palmitoyl chloride was added under ice bath for grafting;

[0036](2) Add the 0.5g HNT emulsifier prepared above, 30mg maleic anhydride, 50mg N,N-methylenebisacrylamide, 100μL Irgacure-1173 photoinitiator in sequence in a glass bottle equipped with 6ml toluene, Then, 4000 μL of deionized water was added dropwise under high-speed stirring at 15000 r, and the prepared oil-in-water-in-oil (O / W / O) double emulsion was prepared after 1 min;

[0037] (3) The oil-in-water-in-oil (O / W / O) double emulsion obtained in (2) was polymerized under ultraviolet...

Embodiment 3

[0040] Preparation of rigid hydrogel micro-nanosheets (PMBA-PMA) rich in modifiable anhydride groups and anhydride hydrolyzable carboxyl groups on the surface and a functionalized adsorbent (PMBA-PMA-CE) capable of recognizing and trapping lithium ions

[0041] (1) First, 20g of halloysite was added to 30g of pyridine and 70g of DMF solution respectively to activate the hydroxyl group in a 50°C water bath, and then the DMF solution mixed with palmitoyl chloride was added under the ice bath for grafting;

[0042] (2) Add the 0.5g HNT emulsifier prepared above, 30mg maleic anhydride, 50mg N,N-methylenebisacrylamide, 100μL Irgacure-1173 photoinitiator in sequence in a glass bottle equipped with 6ml toluene, Then add 4000 μL of deionized water dropwise under high-speed stirring at 15000 rpm, and after 1 min, prepare the oil-in-water-in-oil (O / W / O) double emulsion;

[0043] (3) The oil-in-water-in-oil (O / W / O) double emulsion obtained in (2) was polymerized under ultraviolet light f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of preparation of chemical separation functional materials, and relates to a preparation method of a crown ether modified hard hydrogel micro-nanosheet. According to the invention, an oil-in-water-in-oil double-emulsion template prepared by one-step stirring by dynamically adjusting the hydrophilicity-hydrophobicity of the halloysite nanotube is combined with an ultraviolet-initiated polymerization approach to obtain a hard hydrogel micro-nano sheet, and the surface of the hard hydrogel micro-nano sheet is rich in crown ether active sites through an interface post-modification strategy; and a functional adsorbent is obtained after a series of treatment and is used for selective adsorption separation of Li<+> in the salt lake brine. The crown ether modified hard hydrogel micro-nano sheet prepared by the method has rapid adsorption kinetics and stable thermodynamic properties, is low in cost and has excellent mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of preparation of chemical separation functional materials, and relates to the use of a one-step double-emulsion droplet reactor constructed of modified Pickering particles to controlly prepare a crown ether functionalized nanosheet adsorbent and use it for extracting lithium. Background technique [0002] Double emulsion is a multi-phase dispersion system formed by further dispersing oil-in-water (O / W) emulsion or water-in-oil (W / O) emulsion in oil phase or water phase through secondary emulsification, which includes O / W There are two types of / O type and O / W / O type. Due to the advantages of large specific surface area and fast mass transfer efficiency, double emulsions have potential applications in adsorption research in recent years. Double emulsion can be prepared by two-step method and one-step method. Compared with the traditional two-step method, the one-step method has the advantages of simple oper...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C22B3/24C22B7/00C22B26/12
CPCB01J20/264B01J20/28033C22B26/12C22B7/005C22B3/24Y02P10/20
Inventor 周梦蝶潘建明
Owner JIANGSU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com