Check patentability & draft patents in minutes with Patsnap Eureka AI!

Amino hybrid polydisilane aerogel material and preparation method thereof

A gel material and silane gas technology, which is applied in the field of new amino hybrid polysilsesquisilane airgel materials and its preparation, can solve the problem of limited active points, low amino content, and poor pore structure of amino-functionalized airgel. problem, to achieve the effect of reducing operation steps, high specific surface area, and easy industrial production

Inactive Publication Date: 2017-09-26
NANJING UNIV OF TECH
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited active sites available for reaction on the surface of the wet gel, the amino group content of the surface of the amino-modified airgel material prepared by the first way is low; due to the destruction of the airgel network structure by the solvent, the Poor pore structure of amino-functionalized aerogels

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
  • Amino hybrid polydisilane aerogel material and preparation method thereof
  • Amino hybrid polydisilane aerogel material and preparation method thereof
  • Amino hybrid polydisilane aerogel material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] Stir the mixture of 0.1mol tetramethyl orthosilicate, 2.0mol methanol, 0.8mol deionized water, and 0.2mmol hydrochloric acid at -10°C for 60 minutes, then add 0.1mol N-aminoethyl-γ-aminopropyltrimethoxy Silane, continue to stir for 10 minutes to obtain a sol, the sol is placed at 30°C for a gel reaction for 30 minutes to obtain a wet gel, and the wet gel is aged at 30°C for 24 hours and then replaced with methanol for 4 times (each time interval is 36 hours) followed by CO 2 Amino-hybrid polysilsesquisilane airgel was obtained by supercritical drying. The amino group content on the surface of the prepared amino hybrid polysilsesquisilane airgel is 4.5mmol / g, and the apparent density is 0.10g / cm 3 , true density 2.12g / cm 3 , the porosity is 95%, the pore size distribution is 2-200nm, and the BET specific surface area is 152m 2 / g, pore volume 1.52cm 3 / g, CO 2 Gas adsorption capacity 1.5mmol / g (25°C, normal pressure, 1% CO 2 +99%N 2 ).

[0026] See attached pictu...

example 2

[0032] Stir the mixture of 0.1mol tetramethyl orthosilicate, 1.0mol ethanol, 1.2mol deionized water, and 0.4mmol hydrochloric acid at 0°C for 30 minutes, then add 0.2mol N-aminoethyl-γ-aminopropyltrimethoxysilane , continue to stir for 7 minutes to obtain a sol, the sol is placed at 0°C for a gel reaction for 60 minutes to obtain a wet gel, and the wet gel is aged at 50°C for 6 hours and then replaced with ethanol for 5 times (each interval is 24 hours) after CO 2Amino-hybrid polysilsesquisilane airgel was obtained by supercritical drying. The amino group content on the surface of the prepared amino hybrid polysilsesquisilane airgel is 6.1mmol / g, and the apparent density is 0.15g / cm 3 , true density 2.10g / cm 3 , the porosity is 93%, the pore size distribution is 2-180nm, and the BET specific surface area is 128m 2 / g, pore volume 1.43cm3 / g, CO 2 Gas adsorption capacity 1.6mmol / g (25°C, normal pressure, 1% CO 2 +99%N 2 ).

example 3

[0034] Stir the mixture of 0.1mol tetraethyl orthosilicate, 1.0mol methanol, 1.2mol deionized water, and 0.6mmol hydrochloric acid at 5°C for 20 minutes, then add 0.3mol N-aminoethyl-γ-aminopropyltriethoxy Silane, continue stirring for 5 minutes to obtain a sol, the sol is placed at 10°C for a gel reaction for 50 minutes to obtain a wet gel, and the wet gel is aged at 40°C for 12 hours and then replaced with isopropanol for 5 times (each interval time is 24 hours) followed by CO 2 Amino-hybrid polysilsesquisilane airgel was obtained by supercritical drying. The amino group content on the surface of the prepared amino hybrid polysilsesquisilane airgel is 10.2mmol / g, the apparent density is 0.12g / cm3, and the true density is 2.06g / cm3 3 , the porosity is 94%, the pore size distribution is 3-200nm, and the BET specific surface area is 105m 2 / g, pore volume 1.3cm 3 / g, CO 2 Gas adsorption capacity 2.6mmol / g (25°C, normal pressure, 1% CO 2 +99%N 2 ).

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
densityaaaaaaaaaa
densityaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of preparation of novel materials, and relates to an amino hybrid polydisilane aerogel material and a preparation method thereof. Amino hybrid polydisilane aerogel is prepared through an in-situ amino modification method. The preparation method comprises the following steps: performing sol-gel reaction on organic silicon alkoxide, alcohol, deionized water, hydrochloric acid and a silane coupling agent, thus obtaining wet gel; and performing aging, solvent replacement and supercritical drying on the wet gel, thus obtaining the amino hybrid polydisilane aerogel. The invention provides the novel preparation method; and the obtained amino hybrid polydisilane aerogel is high in carbon dioxide gas adsorption performance. The method is simple in process and favorable for industrial production; and the prepared material is high in carbon dioxide gas adsorption capacity. The technology has a high application value in the aspect of carbon discharging, can be used for green chemical production and can be further applied to life supporting systems of closed equipment such as a spacecraft and a space station.

Description

technical field [0001] The invention belongs to the field of preparation of new materials, in particular to a novel amino hybrid polysilsesquisilane airgel material and a preparation method thereof. Background technique [0002] Carbon dioxide is a major greenhouse gas that contributes to global warming, CO 2 Capture is an effective way to reduce greenhouse gas emissions, and is conducive to clean and green industrial production. It can also be used in life support systems for airtight equipment such as spacecraft and space stations. Low cost, high performance CO 2 The development of adsorbent is of great significance and wide application. As a nanoporous material, airgel has a continuous 3-dimensional nanoporous network structure, endowing it with low density, high specific surface area, large porosity and other characteristics, and is an excellent CO 2 Adsorbent candidate materials. solid CO 2 CO of the adsorbent 2 The adsorption mainly depends on the surface amino g...

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): B01J20/26B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01J20/262B01J20/265B01J20/28047B01J20/28061B01D2253/202B01D2257/504Y02C20/40
Inventor 孔勇张嘉月沈晓冬崔升
Owner NANJING UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com