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

Preparation method of porous carbon microspheres

A technology of porous carbon and microspheres, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of large-scale production difficulties by hydrothermal method, poor quality of microspheres, etc., and achieve uniform morphology and uniform particle size. , the effect of simple equipment

Inactive Publication Date: 2014-09-24
UNIV OF SCI & TECH BEIJING
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: although the soft template method is simple, the quality of the prepared microspheres is not as good as that of the hard template method; the hydrothermal method is difficult to produce in large scale

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
  • Preparation method of porous carbon microspheres
  • Preparation method of porous carbon microspheres
  • Preparation method of porous carbon microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of carbon microspheres. Weigh 3.88g resorcinol, 5.2ml formaldehyde, mix and stir for 1 hour, add 30ml deionized water, mix and stir for 2 hours to form a uniform carbon precursor solution, measure 15ml polymer hollow microspheres, stir and mix at room temperature for 24 hours hour. Centrifugal cleaning, adding 1ml of acetic acid at 80°C for curing for 24 hours.

[0024] Dry at 60°C, put the powder in a high-temperature atmosphere furnace, pass argon gas at a rate of 0.1L / min, heat up to 100°C at a rate of 5K / min, and keep it warm for 2 hours. Then the temperature was raised to 420°C at a rate of 5K / min for 3 hours, and then the temperature was raised to 800°C at a rate of 5K / min, and the temperature was kept for 4 hours, and activated by carbon dioxide for 2 hours to obtain carbon microspheres.

Embodiment 2

[0026] Preparation of carbon microspheres. Weigh 3.88g resorcinol, 5.2ml formaldehyde, mix and stir for 1 hour, add 30ml of deionized water, mix and stir for 2 hours to form a uniform carbon precursor solution, measure 15ml of polymer hollow microspheres, stir and mix and place at room temperature for 48 hour. Centrifugal cleaning, adding 1ml of acetic acid at 40°C and curing for 24 hours.

[0027] Dry at 60°C, put the powder in a high-temperature atmosphere furnace, pass argon gas at a rate of 0.1L / min, heat up to 100°C at a rate of 5K / min, and keep it warm for 2 hours. Then the temperature was raised to 420°C at a rate of 5K / min for 3 hours, and then the temperature was raised to 900°C at a rate of 5K / min for 3 hours, and activated by carbon dioxide for 1 hour to obtain carbon microspheres.

Embodiment 3

[0029] Preparation of carbon microspheres. Weigh 3.88g resorcinol, 5.2ml formaldehyde, mix and stir for 1 hour, add 30ml deionized water, mix and stir for 2 hours to form a uniform carbon precursor solution, measure 15ml polymer hollow microspheres, stir and mix at room temperature for 24 hours hour. Centrifugal cleaning, adding 1ml of acetic acid at 60°C for curing for 24 hours.

[0030] Dry at 60°C, put the powder in a high-temperature atmosphere furnace, pass argon gas at a rate of 0.1L / min, heat up to 100°C at a rate of 5K / min, and keep it warm for 2 hours. Then the temperature was raised to 420°C at a rate of 5K / min for 3 hours, and then the temperature was raised to 1000°C at a rate of 5K / min for 3 hours, and activated by carbon dioxide for 1 hour to obtain carbon microspheres.

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 preparation method of porous carbon microspheres and belongs to the field of nano material synthesis. The preparation method of the porous carbon microspheres mainly comprises the steps of uniformly mixing m-benzenediol and formaldehyde, then adding deionized water and stirring to form a uniform carbon source precursor solution; adding polymeric microspheres which are of a hollow structure into the carbon source precursor solution obtained in the step one, thus obtaining a phenolic resin-polymer core-shell structure; adding acetic acid to the phenolic resin-polymer core-shell structure product and heating for curing at the temperature of 40-80 DEG C, thus obtaining cured phenolic resin-polymer core-shell structure microspheres; removing polymers out of the cured phenolic resin-polymer core-shell structure microspheres by using an organic solvent like tetrahydrofuran, thus obtaining resin microspheres; drying the core-shell structure microspheres at the temperature of 60-80 DEG C and carbonizing in a high temperature furnace, thus obtaining the porous carbon microspheres are obtained. The preparation method of the porous carbon microspheres has the advantages that the adopted raw materials are common chemical raw materials, and cost is low; a technology is simple; large-scale industrial production is facilitated.

Description

Technical field [0001] The invention belongs to the field of nano material synthesis, and specifically relates to a preparation method of carbon microspheres. Background technique [0002] Porous carbon microspheres are widely used due to their high specific surface area, especially porous resins and carbon microspheres. They have large specific surface area, large pore volume, good chemical inertness and other properties in catalyst carriers, adsorbents, and drug carriers. , Template materials and other fields have been widely used. [0003] There are many methods for preparing porous carbon microspheres: 1 hard template method 2 soft template method 3 liquid phase synthesis method 4 gas phase cracking method 5 hydrothermal method, etc. Each method has its advantages and disadvantages. For example: Although the soft template method is simple, the quality of the prepared microspheres is not as good as the hard template method; the hydrothermal method is difficult to produce on a l...

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): C01B31/10C01B32/336
Inventor 巨新黄妙逢姜晓萍
Owner UNIV OF SCI & TECH BEIJING
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