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

A method for synthesizing vta-cr(vi)-iips adsorbent with quaternary ammonium salt as monomer

A technology of quaternary ammonium salts and adsorbents, applied in the field of synthetic Cr-IIPs adsorbents, which can solve the problems of poor adsorption selectivity

Active Publication Date: 2022-07-05
NANCHANG HANGKONG UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problem that the existing ion-imprinted polymers have poor adsorption selectivity for hexavalent chromium anions, and provides a method for synthesizing VTA-Cr(VI)-IIPs adsorbent using quaternary ammonium salts as monomers

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
  • A method for synthesizing vta-cr(vi)-iips adsorbent with quaternary ammonium salt as monomer
  • A method for synthesizing vta-cr(vi)-iips adsorbent with quaternary ammonium salt as monomer
  • A method for synthesizing vta-cr(vi)-iips adsorbent with quaternary ammonium salt as monomer

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0030] Embodiment 1: This embodiment is a method for synthesizing a VTA-Cr(VI)-IIPs adsorbent with a quaternary ammonium salt as a monomer, which is specifically carried out according to the following steps:

[0031] 1. Dissolve benzyl ethyl trimethyl ammonium chloride in acetonitrile in a round-bottomed flask, stir and mix evenly, drop an aqueous potassium chromate solution with a pipette, pre-polymerize and stir at room temperature for 1 h to 1.5 h, and then continue to Add ethylene glycol dimethacrylate dropwise under stirring conditions, add azobisisobutyronitrile under continuous stirring conditions, and continue stirring until completely dissolved to obtain a mixed solution;

[0032] The concentration of chromium element in the potassium dichromate aqueous solution is 5g / L~5.5g / L;

[0033] The quality of the described benzyl ethyl trimethyl ammonium chloride and the volume ratio of acetonitrile are (0.2g~0.3g): 10mL;

[0034] The volume ratio of described potassium dich...

specific Embodiment approach 2

[0048] Embodiment 2: This embodiment is different from Embodiment 1 in that the concentration of chromium element in the potassium dichromate aqueous solution described in step 1 is 5 g / L. Others are the same as the first embodiment.

specific Embodiment approach 3

[0049] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mass ratio of the benzylethyltrimethylammonium chloride described in the step 1 to the volume of acetonitrile is 0.212g:10mL. Others are the same as in the first or second embodiment.

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
adsorption capacityaaaaaaaaaa
Login to View More

Abstract

A method for synthesizing a VTA-Cr(VI)-IIPs adsorbent by using a quaternary ammonium salt as a monomer relates to a method for synthesizing a Cr(VI)-IIPs adsorbent. The present invention aims to solve the technical problem that the existing ion-imprinted polymer has poor adsorption selectivity for hexavalent chromium anions. The functional monomer benzyl ethyl trimethyl ammonium chloride (VTA) used in the method of the present invention carries a positive charge, which can quickly attract hexavalent chromium anion groups, and at the same time, it has a matching cavity stably conforming to the hexavalent chromium anion groups, which can be combined with hexavalent chromium anion groups. Hexavalent chromium anions are firmly bound; in addition, the material is stable in air and water and is resistant to high temperatures. The invention synthesizes a VTA-Cr(VI)-IIPs adsorbent synthesized by using quaternary ammonium salt as a functional monomer, and can quickly, efficiently and selectively remove hexavalent chromium anions in water.

Description

technical field [0001] The present invention relates to a method for synthesizing Cr(VI)-IIPs adsorbent. Background technique [0002] In today's society, heavy metal substances discharged from industrial production processes such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation cannot be effectively treated after long-term accumulation, which has attracted great attention from scientists all over the world. Effective treatment of heavy metal pollution in water bodies is urgent. Under the continuous development of industrialization, my country is also faced with various problems such as heavy metal pollution. According to statistics, the pollution of groundwater in my country is relatively serious, and the content of heavy metals in many watersheds exceeds the standard. Heavy metal pollution (mainly lead, chromium, mercury, arsenic and other heavy metal ions) not only destroys the self-purification ability of water bodie...

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 Patents(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/22C02F101/20
CPCB01J20/268C02F1/285C02F2101/22C02F2101/20
Inventor 胡惠钦罗旭彪习羽方俐俐任重
Owner NANCHANG HANGKONG UNIVERSITY
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