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

Merrifield resin loaded polyether amide ionic liquid catalyst and preparation method thereof

An ionic liquid and polyether amide technology, which is applied in the field of polyether amide ionic liquid catalyst and its preparation, can solve the problems of low catalytic activity, weak catalyst activation effect, limited application of supported ionic liquid catalyst, etc.

Inactive Publication Date: 2022-01-04
QINGDAO UNIV OF SCI & TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned resin-supported ionic liquid catalysts still have relatively large limitations in structural design, which are mainly reflected in: (1) the catalyst has a weak activation effect on epoxides, resulting in low catalytic activity and harsh reaction conditions (reaction high temperature, high pressure, long reaction time); (2) catalyst service life is short
The above problems greatly limit the use of supported ionic liquid catalysts in CO 2 Applications in cycloaddition reactions
The main reason for the above problems is that the key active site in the structure of the supported ionic liquid catalyst - the hydrogen bond donor (HBD) group is limited to the traditional hydroxyl, carboxyl or amino group, etc., and the structure lacks efficient HBD activation groups.

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
  • Merrifield resin loaded polyether amide ionic liquid catalyst and preparation method thereof
  • Merrifield resin loaded polyether amide ionic liquid catalyst and preparation method thereof
  • Merrifield resin loaded polyether amide ionic liquid catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Polyether Monoamide Ionic Liquid Catalyst PS-[Py-p-NHCOCH Supported by Merrifield Resin Material 2 O(CH 2 CH 2 O) 15 CH 3 ][Cl] (n=15, R 1 =CH 3 , the preparation of Y=Cl)

[0021] Swell 2g Merrifield resin in toluene at room temperature for 12h, add 15ml acetonitrile solution and 3.5g p-aminopyridine polyether monoamide Py-p-NHCOCH after filtration 2 O(CH 2 CH 2 O) 15 CH 3 , under an inert atmosphere, reacted at 80°C for 24h, cooled to room temperature, separated by filtration, washed the resin with ethanol, and dried to obtain the polyether monoamide ionic liquid catalyst PS-[Py-p-NHCOCH supported by Merrifield resin material 2 O(CH 2 CH 2 O) 15 CH 3 ][Cl].

Embodiment 2

[0023] Polyether Monoamide Ionic Liquid Catalyst PS-[Py-p-NHCOCH Supported by Merrifield Resin Material 2 O(CH 2 CH 2 O) 15 CH 3 ][Br] (n=15, R 1 =CH 3 , Y=Br) preparation

[0024] The polyether monoamide ionic liquid catalyst PS-[Py-p-NHCOCH of the Merrifield resin material load that embodiment 1 obtains 2 O(CH 2 CH 2 O) 15 CH 3 ][Cl] was dispersed in 20mL deionized water, then 4.3g NaBr was added, and ion exchange was carried out at 30°C for 48h to obtain the polyether monoamide ionic liquid catalyst PS-[Py-p-NHCOCH supported by Merrifield resin material 2 O(CH 2 CH 2 O) 15 CH 3 ][Br].

Embodiment 3

[0026] Polyether Monoamide Ionic Liquid Catalyst PS-[Py-p-NHCOCH Supported by Merrifield Resin Material 2 O(CH 2 CH 2 O) 15 CH 3 ][I](n=15, R 1 =CH 3 , the preparation of Y=I)

[0027] The polyether monoamide ionic liquid catalyst PS-[Py-p-NHCOCH of the Merrifield resin material load that embodiment 1 obtains 2 O(CH 2 CH 2 O) 16 CH 3 ][Cl] was dispersed in 20mL deionized water, then 6.3g NaI was added, and ion exchange was carried out at 30°C for 48h to obtain the polyether monoamide ionic liquid catalyst PS-[Py-p-NHCOCH supported by Merrifield resin material 2 O(CH 2 CH 2 O) 15 CH 3 ][I].

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

No PUM Login to View More

Abstract

The invention relates to a Merrifield resin-loaded polyether amide ionic liquid catalyst and a preparation method thereof, and aims to solve the problems of low catalytic activity, harsh reaction conditions and short service life of a traditional loaded ionic liquid catalyst in a CO2 cycloaddition reaction. By utilizing characteristics that ionic liquid is designable in structure and easy to functionalize, polyether carboxylic acid functionalized aminopyridine ionic liquid is bonded to Merrifield resin, and novel polyetheramide hydrogen bond donor-based multifunctional integrated Merrifield resin loaded ionic liquid catalyst is created. an HBD group, organic alkali, a nucleophilic reagent and a polyether chain are assembled on a Merrifield resin material, so that efficient integration of multiple catalytic active sites is realized, and the catalyst has the advantages that the coupling synergistic effect among the multiple active sites can effectively improve the activity and selectivity of cycloaddition reaction, and the catalyst has high stability.

Description

technical field [0001] The invention relates to the technical field of chemistry and chemical engineering, in particular to a kind of Merrifield resin-supported polyetheramide ionic liquid catalyst and a preparation method thereof. Background technique [0002] carbon dioxide (CO 2 ) is the main greenhouse gas that causes global warming, and it is also an inexhaustible, cheap, non-toxic, recyclable green C 1 resource. Realize CO 2 resource utilization of CO 2 It is of great strategic significance to reduce emissions, improve the environment and reduce human dependence on fossil fuels. In recent years, cyclic carbonates have been widely used as high value-added chemicals in fine chemicals, lithium battery manufacturing, polycarbonate and polyurethane synthesis, and other fields. And by CO 2 Cycloaddition of epoxides to prepare cyclic carbonates is a green chemical approach with 100% atom economy as an alternative to the toxic phosgene synthesis of CO 2 One of the impor...

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
IPC IPC(8): B01J31/06B01J31/02
CPCB01J31/0284B01J31/06
Inventor 金欣李淑梅
Owner QINGDAO UNIV OF SCI & TECH
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