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

Ultra-microporous ionic polymer material and preparation method and application thereof

An ionic polymer, ultra-microporous technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of slow mass transfer, difficult recovery, high viscosity, etc.

Active Publication Date: 2020-07-07
ZHEJIANG UNIV
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the absorption capacity of ionic liquids is low, and due to the essential characteristics of liquid molten salts at room temperature, there are disadvantages such as high viscosity, slow mass transfer, and difficult recovery.

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
  • Ultra-microporous ionic polymer material and preparation method and application thereof
  • Ultra-microporous ionic polymer material and preparation method and application thereof
  • Ultra-microporous ionic polymer material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Weigh 5g of 1,3,5-tris(bromomethyl)benzene and 4.35g of vinylimidazole, add them into 250mL of acetonitrile, mix and dissolve under stirring, and then heat to 50°C for 36 hours to react. The obtained product was filtered and washed with acetonitrile, and then vacuum-dried at 65°C for 24 hours to obtain a white solid, i.e. hyperbranched ionic liquid Ph-3MVIm-Br (Ph is a benzene ring group, 3 represents the number of hyperbranched, MVIm represents 1 - vinyl-3 methylene imidazolium cation, Br is an anion), its molecular structure is shown in formula (2-1), and the yield is about 80%.

[0064]

Embodiment 2

[0066] Weigh 1.0 g of the hyperbranched ionic liquid Ph-3MVIm-Br obtained in Example 1 and 0.03 g of azobisisobutyronitrile into a mixed solution of 10 mL of ethanol and 5 mL of water, mix and dissolve under stirring, and then heat to 70 ° C for 12 hours . The obtained product P(Ph-3MVIm-Br) was filtered, washed with water and methanol, and then dried under vacuum at 65° C. for 24 hours to obtain a white solid powder with a yield of about 85%. Such as figure 2 and image 3 As shown, the material in CO 2 (195K) as the medium, the measured Langmuir specific surface area is 244m 2 / g, the total pore volume is 0.104cm 3 / g, the aperture is Adsorbent P(Ph-3MVIm-Br) in N 2 (77K) as the medium, the specific surface area is only 10.0m 2 / g. This result indicates that P(Ph-3MVIm-Br) is an ultramicroporous material. Such as Figure 4 As shown, the thermogravimetric results show that the material has excellent thermal stability, and the thermal decomposition temperature is as...

Embodiment 3

[0072] Weigh 5g of 1,3,5-tris(chloromethyl)benzene and 6.95g of vinylimidazole, add them into 250mL of acetonitrile, mix and dissolve under stirring, and then heat to 50°C for 36 hours to react. The obtained product was filtered and washed with acetonitrile, and then vacuum-dried at 65° C. for 24 hours to obtain a white solid, namely hyperbranched ionic liquid Ph-3MVIm-Cl, with a yield of about 80%.

[0073] Weigh 1.0g hyperbranched ionic liquid Ph-3MVIm-Cl and 0.03g azobisisobutyronitrile into 10mL N,N-dimethylformamide and 5mL water mixed solution, mix and dissolve under stirring, then heat to 80 °C for 12 hours. The obtained product P(Ph-3MVIm-Cl) was filtered, washed with water and methanol, and then dried under vacuum at 65° C. for 24 hours to obtain a white solid powder with a yield of about 80%. CO under 195K 2 The results of the adsorption isotherm show that the Langmuir specific surface area of ​​the material is 184m 2 / g, the total pore volume is 0.081cm 3 / g, th...

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
specific surface areaaaaaaaaaaa
thermal decomposition temperatureaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses an ultra-microporous ionic polymer material based on hyperbranched ionic liquid and preparation and alkyne / olefin separation application thereof. The ultra-microporous ionic polymer material has the characteristics of high anion density and narrow pore size distribution, and the structural properties are regulated and controlled by changing a hyperbranched structure and anion and cation types. High-selectivity separation of acetylene and propyne is realized by utilizing a strong hydrogen bond environment constructed by high anion density and a size screening effect, sothat alkyne in alkyne and olefin mixed gas is removed to a very low degree, and olefin gas with extremely low alkyne content is obtained. The material prepared by the method has the advantages of highstability, simple preparation, strong controllability of material structural properties, good adsorption performance, easy desorption, greenness, environmental protection, and good industrial application prospect.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a class of ultramicroporous ionic polymer materials and a preparation method and application thereof. Background technique [0002] Alkyne / alkene separation is an important separation process in the petrochemical industry. Ethylene is the basic raw material of the three major synthetic materials and is known as the "mother of the petrochemical industry". In 2016, the global output exceeded 170 million tons. In industry, acetylene impurities will inevitably be produced in production processes such as steam cracking, and the content is about 0.1% to 1% (mol fraction). Ethylene production requires removal of acetylene as low as 0.05ppm. The methods used in industry for the separation of acetylene and ethylene mainly include selective catalytic hydrogenation, solvent absorption, adsorption, and cryogenic separation. Such as the selective catalytic hydrogenation method (s...

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): B01J20/26B01J20/34B01D53/06B01D53/04C08F126/06B01J20/30
CPCB01D53/04B01D53/06B01J20/261B01J20/3425C08F126/06Y02P20/54
Inventor 邢华斌锁显崔希利
Owner ZHEJIANG 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