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

Method for preparing phosphorus-ordered mesoporous carbon complex and fuel-cell catalyst using the complex as carrier

A fuel cell and mesoporous carbon technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, battery electrodes, etc., can solve the problems of poor mesoscopic structure and achieve controllable morphology , The effect of increasing the pore size and reducing the shrinkage of the mesoscopic structure

Inactive Publication Date: 2009-01-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF1 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ordered mesoscopic structure of the material prepared by this method is poorly maintained.

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 phosphorus-ordered mesoporous carbon complex and fuel-cell catalyst using the complex as carrier
  • Method for preparing phosphorus-ordered mesoporous carbon complex and fuel-cell catalyst using the complex as carrier
  • Method for preparing phosphorus-ordered mesoporous carbon complex and fuel-cell catalyst using the complex as carrier

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] A preferred embodiment in the synthetic method of P-OMC catalyst carrier, comprises the steps: the inorganic acid containing phosphorus is H 3 PO 4 , the water-soluble resin is formaldehyde phenolic resin, and the ordered mesoporous silica is SBA-15. At room temperature, the SBA-15, H 3 PO 4 Mix with formaldehyde phenolic resin according to the mass ratio (1:0.01:0.5) and then fully stir for 1-5h to react to obtain a milky white solution; vacuum polymerize at 80-120°C for 1-4h; obtain phosphorus-containing dark brown powder in an inert atmosphere The temperature is raised from 30°C to 700°C-900°C at a temperature of 1-3°C / min, roasted for 2-5h, and carbonized at a high temperature in one step to obtain a phosphorus-ordered mesoporous carbon-silicon (P-OMCSi) composite; and then Immerse with 5-20% hydrofluoric acid solution for 10-30h, wash with water until neutral, and dry in vacuum to obtain the P-OMC composite of the present invention.

[0025]A preferred embodime...

Embodiment 1

[0028] Preparation of SBA-15: 4.0g block copolymer P123 (EO 20 PO 70 EO 70 ), 105ml of water, 20ml of hydrochloric acid (37%) and 8.5g of ethyl orthosilicate were mixed, stirred and reacted at 38°C for 2h, then hydrothermally reacted in an oven at 130°C for 24h, and finally roasted at 550°C for 5h in an air atmosphere.

Embodiment 2

[0030] Synthesis of water-soluble resin precursor solution: 8.0g phenol was heated in a 42°C water bath to become transparent, slowly added 14.16g formaldehyde and 0.34g sodium hydroxide (20%) solution, refluxed at 70°C for 60min, cooled to room temperature, and adjusted pH to neutral. Distill under reduced pressure at 45°C, cool to room temperature, and prepare 20% ethanol solution.

[0031] Preparation of catalyst support

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
lattice spacingaaaaaaaaaa
lattice spacingaaaaaaaaaa
lattice spacingaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of a phosphorus-ordered mesoporous carbon composite and a fuel cell catalyst which takes the composite as a carrier; the preparation method and the fuel cell catalyst belong to the field of fuel cells. Ordered mesoporous silicon dioxide, water-soluble resin and phosphoric inorganic salt or acid carry out the full reaction after the mixing, then a phosphorus source and the water-soluble resin are polymerized in a cage-like channel of the ordered mesoporous silicon in a vacuum manner, the high-temperature carbonization is carried out under the protection of inert atmosphere to obtain a phosphorus-doped ordered mesoporous silicon-carbon composite, and the rigid silicon dioxide is finally dissolved out through hydrofluoric acid solution, thereby obtaining the phosphorus-doped ordered mesoporous carbon (P-OMC) with a copied template mesoscopic structure. KBH4, formaldehyde and NaBH4, etc., are taken as reducing agents, and a noble metal catalyst is loaded on a P-OMC carrier through the conventional liquid-phase reduction method. The conductivity of the catalyst carrier in the invention is significantly improved; at the same time, the noble metal catalyst which is loaded on the carrier significantly improves the electrocatalytic performance to methanol, thereby showing great electrocatalytic activity.

Description

technical field [0001] The invention relates to a preparation method of a phosphorus-ordered mesoporous carbon composite and a fuel cell catalyst using the composite as a carrier, belonging to the technical field of fuel cells. Background technique [0002] Fuel cells have the advantages of less energy loss, low pollution, high energy density, and low noise, and are considered to be the most promising chemical power sources for electric vehicle power and other civilian applications in the future. At present, the key technologies for the preparation of fuel cells, especially proton exchange membrane fuel cells (PEMFC) and direct methanol fuel cells (DMFC), have matured, but in the electrodes of fuel cells, the catalysts generally used are carbon-supported Pt or Pt-based composites. catalyst. An electrocatalyst having such a structure increases the cost of the catalyst due to the use of noble metals. Therefore, reducing the quality of noble metal catalysts is one of the key ...

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): B01J27/22B01J27/14B01J23/38H01M4/90
CPCY02E60/50
Inventor 梁彦瑜孙志鹏力虎林张校刚
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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