Method for preparing porous carbon spheres doped with nitrogen and phosphorus and application

A phosphorus-doped, porous carbon technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of complex preparation process of porous carbon materials, environmental pollution, etc., to achieve hydrogen storage and environmental pollution Small, easily batch-preparable effects

Inactive Publication Date: 2012-07-18
ZHENGZHOU UNIV
View PDF4 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of inorganic templates in these methods will still complicate the preparation proces

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
  • Method for preparing porous carbon spheres doped with nitrogen and phosphorus and application
  • Method for preparing porous carbon spheres doped with nitrogen and phosphorus and application
  • Method for preparing porous carbon spheres doped with nitrogen and phosphorus and application

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] (1) In a 150 mL dry flask, add 100 mL of acetonitrile, weigh 0.001 mol of hexachlorocyclotriphosphazene and 0.003 mol of 4,4′-dihydroxydiphenyl sulfone, and add 0.01 mol of triphenylsulfone to it after mixing. Ethylamine, immediately seal the flask, and react in an ultrasonic cleaner (100W, 40kHz) water bath at 40℃ for 2h. After the reaction is over, the centrifuge is centrifuged, and the centrifuged product is washed with ethanol and deionized water for 3 to 4 times, and finally the product is dried at 80° C. for 24 hours to obtain polyphosphazene microspheres.

[0033] (2) Weigh 0.6g polyphosphazene microspheres and 0.6g potassium hydroxide, disperse them in 4mL deionized water, stir for 2h to fully immerse the activator potassium hydroxide into the polyphosphazene microspheres, and then add the above mixed solution Centrifuge and dry at 80°C for 24h to obtain a polyphosphazene microsphere / potassium hydroxide mixture.

[0034] (3) Place the obtained poly...

Example Embodiment

[0052] Example 2

[0053] (1) In a 150 mL dry flask, add 50 mL of acetone, weigh 0.001 mol of hexachlorocyclotriphosphazene and 0.0028 mol of 4,4′-diaminodiphenyl sulfone, and add 0.006 mol of three Ethylamine, immediately seal the flask, and react for 10h in an ultrasonic cleaner (100W, 40kHz) water bath at 20℃. After the reaction is over, the centrifuge is centrifuged, and the centrifuged product is washed with ethanol and deionized water 3 to 4 times, and finally the product is dried at 50° C. for 20 h to obtain polyphosphazene microspheres.

[0054] (2) Weigh 0.6g polyphosphazene microspheres and 0.3g sodium hydroxide, disperse them in 2mL deionized water, stir for 2h to fully immerse the activator sodium hydroxide into the polyphosphazene microspheres, and then mix the above mixed solution Centrifuge and dry at 50°C for 20 hours to obtain a mixture of polyphosphazene microspheres / sodium hydroxide.

[0055] (3) Put the obtained polyphosphazene microspheres / sodium hydroxide mixt...

Example Embodiment

[0057] Example 3

[0058] (1) In a 150 mL dry flask, add 500 mL ethanol, weigh 0.001 mol hexachlorotriphosphazene and 0.0032 mol hydroquinone, mix well, add 0.012 mol triethylamine to it, and seal the flask immediately , React for 1h in an ultrasonic cleaner (100W, 40kHz) water bath at 80℃. After the reaction is over, the centrifuge is centrifuged, and the centrifuged product is washed with ethanol and deionized water 3 to 4 times, and finally the product is dried at 70° C. for 12 hours to obtain polyphosphazene microspheres.

[0059] (2) Weigh 0.6g polyphosphazene microspheres and 3g calcium chloride, disperse them in 6mL deionized water, stir for 2h to fully immerse the activator calcium chloride into the polyphosphazene microspheres, and then centrifuge the above mixed solution And dried at 70 ℃ for 12 hours to obtain polyphosphazene microspheres / calcium chloride mixture.

[0060] (3) Place the obtained polyphosphazene microspheres / calcium chloride mixture in a porcelain boat an...

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
Particle sizeaaaaaaaaaa
The average particle sizeaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical fields of inorganic material chemistry and new energy, and discloses a method for preparing porous carbon spheres doped with nitrogen and phosphorus and an application. Water serves as a solvent, polyphosphazenes microspheres and activating agents are mixed in a mass ratio of (0.2-2):1, concentration of the polyphosphazenes microspheres is maintained at a level of 10-30wt%, stirring is performed completely, the mixture of the polyphosphazenes microspheres and the activating agents is obtained through centrifugal separation, the mixture of the polyphosphazenes microspheres and the activating agents is subjected to carbonization, and finally the porous carbon spheres doped with the nitrogen and the phosphorus are obtained. The activating agents are potassium hydroxide, sodium hydroxide, calcium chloride or zinc chloride. The polyphosphazenes microspheres serve as a carbon precursor in the method, are synthesized directly under the room temperature condition, and has a simple art process and high productivity. Simultaneously, the activating agents are used for processing polyphosphazenes so as to improve specific surface areas and pore structures of the porous carbon spheres greatly and be beneficial to improve hydrogen storage capacity.

Description

technical field [0001] The invention belongs to the technical field of inorganic material chemistry and new energy, and specifically relates to a preparation method and application of nitrogen and phosphorus doped porous carbon spheres. Background technique [0002] Hydrogen is a renewable and clean energy source with a wide range of sources, and it is also an important industrial raw material. It has become the most ideal fuel for fuel cells and hydrogen internal combustion engines. Due to the low density of hydrogen gas, it is easy to explode, so the key technology of hydrogen energy utilization lies in the storage of hydrogen gas. [0003] Research and development of hydrogen storage materials with excellent performance is the key to solving the problem of hydrogen energy storage. In recent years, porous carbon materials have become one of the important research objects of hydrogen storage materials due to their advantages such as low density, high specific surface area,...

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): C01B31/02C01B32/318C01B32/348
Inventor 付建伟许群王明环张超
Owner ZHENGZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap