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

A kind of preparation method of covalent triazine framework doped hybrid film

A technology of covalent triazine skeleton and hybrid membrane, which is applied in the field of membrane separation, can solve the problem of low alcohol content, achieve high repeatability, simple and efficient preparation and operation, and wide application

Active Publication Date: 2017-03-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alcohol is currently mainly obtained through fermentation, but the content of alcohol obtained by traditional fermentation technology is very low

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 kind of preparation method of covalent triazine framework doped hybrid film
  • A kind of preparation method of covalent triazine framework doped hybrid film
  • A kind of preparation method of covalent triazine framework doped hybrid film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation of embodiment 1 covalent triazine framework material

[0031] Add 0.4 g of terephthalonitrile into the microwave reaction kettle, then add 2 milliliters of trifluoromethanesulfonic acid, quickly close the reaction kettle, put it into the microwave reactor and heat the reaction. The process adopts a temperature program, and the temperature is raised to 100 ° C in 3 minutes, and the temperature is raised to 100 ° C in 1 minute. The temperature was raised to 130°C in 30 seconds, then kept at 130°C for 30 minutes, and the temperature was naturally lowered after the reaction was completed. The product was washed with deionized water, ethanol, acetone, and tetrahydrofuran, respectively, and dried under vacuum at 180°C overnight to remove traces of trifluoromethanesulfonic acid.

[0032] X-ray diffraction confirms that the product has a certain crystal form (such as figure 1 ), characteristic peak packets appear at 7°, 15° and 25°, respectively. Scanning elec...

Embodiment 2

[0033] The preparation of embodiment 2 covalent triazine framework material

[0034] The same operation as in Example 1, but the addition of raw materials and the heating program are increased. 1g of terephthalonitrile powder is first added to the microwave reactor, and then 5 milliliters of trifluoromethanesulfonic acid catalyst is added. The heating program is 1 minute by room temperature. The temperature was raised to 90°C, then raised from 90°C to 110°C in 30 seconds, and then kept at 110°C for 30 minutes to allow the reaction to fully proceed, and finally the temperature was naturally lowered. X-ray diffraction confirms that the product also has a certain crystal form (such as image 3 ). This synthesis method can achieve one-time synthesis of a large number of CTF materials.

Embodiment 3

[0035] Example 3 Preparation of Covalent Triazine Framework Material Doped Silicone Rubber Hybrid Membrane

[0036] The CTF material is mixed into polymethylphenylsiloxane at a ratio of 10wt%, and the membrane solution is prepared as follows:

[0037] Solution (1): After mixing 0.2 g of CTF material and 3.3 g of isooctane, ultrasonically disperse the CTF material in a water bath for 5 minutes at room temperature;

[0038] Solution (2): Mix 0.02 g of organotin with 0.2 g of tetraethylorthosilicate, 2 g of polymethylphenylsiloxane, and 3.3 g of isooctane, and ultrasonicate in a water bath for 5 minutes.

[0039] Transfer the solution (2) into the solution (1), disperse the probe evenly by ultrasound at 0°C, immerse the prepared alumina tube or sheet in the membrane solution for 10 seconds, and then pull up to form a membrane. It is 60 mm / min; with the change of the viscosity of the film liquid, a film is pulled and prepared at regular intervals, and the film thickness becomes t...

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

A method for preparing a covalent triazine skeleton-doped hybrid membrane, the steps are: (1) preparation of a covalent triazine skeleton, the formula is: organic monomer: a trifluoromethanesulfonic acid, a=5-50, and Organic monomers and trifluoromethanesulfonic acid are quickly mixed in a microwave reactor, and microwave heating is used to synthesize CTFs materials. The synthesis temperature is 100°C-150°C, and the synthesis time is 10-60 minutes; (2) Preparation of hybrid membrane liquid , the formula is b covalent triazine skeleton powder: organic matter, b=1wt%~60wt%, organic matter is polydimethylsiloxane, polymethylphenylsiloxane, polyimide, polyamide, poly Sulfone, polytrimethylsilane‑1‑propyne; (3) Preparation of hybrid membranes on porous supports by dip coating; (4) Drying of hybrid membranes. The hybrid membrane prepared by the invention has high liquid separation performance and certain gas separation performance, and the synthesis repeatability is good.

Description

technical field [0001] The invention belongs to the field of membrane separation, specifically relates to the synthesis and application of a novel hybrid membrane doped with a covalent triazine skeleton, and in particular proposes a novel hybrid membrane used in the field of pervaporation separation. Background technique [0002] Alcohols such as ethanol and butanol are widely used as solvents and precursors of compounds. In recent years, a new application field of green biofuels has been discovered, which can be blended with gasoline in any proportion or even directly replaced. Alcohol is mainly obtained through fermentation at present, but the content of alcohol obtained by traditional fermentation technology is very low. Rectification is one of the most widely used and mature separation technologies. Due to its high energy consumption and relatively low yield, it takes multiple rectifications to achieve high purity of the separated product. Therefore, pervaporation separ...

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): B01D69/12B01D71/06B01D71/70B01D71/56B01D71/68B01D67/00
Inventor 杨维慎彭媛李砚硕
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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