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

Carbon micromillimeter tube loading cerium dioxide micromillimete particles and method for making the same

A technology of carbon nanotubes and ceria, applied in chemical instruments and methods, catalyst activation/preparation, catalyst supports, etc., can solve the problems of catalyst performance and utilization rate, particle size and dispersion degree not meeting the ideal requirements, etc.

Inactive Publication Date: 2004-03-17
TSINGHUA UNIV
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, cerium oxide particles are mainly supported on alumina (J.Catal., 86 (1984) 254), silicon dioxide (J.Catal., 151 (1995) 111) and activated carbon (Appl.Catal.A.Gen) as catalysts. ., 120 (1994) 71) and other carriers, but the particle size and degree of dispersion on these carriers have not yet reached the ideal requirements, which has a relatively large impact on the performance and utilization of the catalyst
It has not been reported that ceria particles are used as catalysts on the outer wall of carbon nanotubes at home and abroad.

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
  • Carbon micromillimeter tube loading cerium dioxide micromillimete particles and method for making the same
  • Carbon micromillimeter tube loading cerium dioxide micromillimete particles and method for making the same
  • Carbon micromillimeter tube loading cerium dioxide micromillimete particles and method for making the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) In a mixed solvent of ethanol and distilled water (v / v is 1:1), add carbon nanotubes, stir and sonicate for 20 minutes each;

[0029] (2) Add 0.01g / ml of CeCl to the mixed solution after stirring 3 Solution (the mass ratio of Ce / C is 0.2:1);

[0030] (3) After stirring for a while, slowly drop 0.002g / ml KOH solution until the pH value of the mixed solution is about 11;

[0031] (4) After stirring for 6 hours, obtain solid powder after filtering and drying;

[0032] (5) Heat the solid powder in air at 400°C for 5 minutes.

Embodiment 2

[0034] (1) In a mixed solvent of methanol and distilled water (v / v is 1:1), add carbon nanotubes, stir and sonicate for 20 minutes each;

[0035] (2) Add 0.05g / ml of CeCl to the mixed solution after stirring 3 Solution (Ce / C mass ratio is 1:1);

[0036] (3) After stirring for a while, slowly drop 0.01g / ml ammonia solution until the pH value of the mixed solution is about 11;

[0037] (4) After stirring for 6 hours, obtain solid powder after filtering and drying;

[0038] (5) Heat the solid powder in air at 200°C for 10 minutes.

Embodiment 3

[0040] (1) In a mixed solvent of ethanol and deionized water (v / v is 1:1), add carbon nanotubes, stir and sonicate for 20 minutes each;

[0041] (2) Add 0.1g / ml of CeCl to the mixed solution after stirring 3 Solution (the mass ratio of Ce / C is 1.5:1);

[0042] (3) After stirring for a while, slowly drop into 0.02g / ml NaOH solution until the pH value of the mixed solution is 12;

[0043] (4) After stirring for 6 hours, obtain solid powder after filtering and drying;

[0044] (5) Heat the solid powder in the air at 100°C for 20 minutes.

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
Average particle sizeaaaaaaaaaa
Login to View More

Abstract

The present invention belongs to the field of nano carbon material and its processing and application. The preparation process of carbon nanotube carrying CeO2 includes adding carbon nanotube into the mixed solution of alcohol and water via ultrasonic stirring; adding CeCl3 solution of 0.01-0.1 g / ml concentration into the mixed solution; dropping alkali solution of 0.002-0.02 g / ml concentration into the mixed solution until the mixed solution become alkali; stirring, filtering and stoving to obtain solid powder; and heating the solid powder in air and at 100-400 deg.c to obtain stable and well dispersive CeO2 carrying carbon nanotube particle with CeO2 covering rate over 80 % and average size of 5 nm. The CeO2 carrying carbon nanotube particle may be used as catalyst and other functional material widely.

Description

technical field [0001] The invention relates to a ceria particle and a preparation method thereof, in particular to a carbon nanotube-loaded ceria nanoparticle and a preparation method thereof, belonging to the technical field of carbon nanomaterial processing and application. Background technique [0002] Carbon nanotubes have a unique structure and exotic properties, so many researchers have been conducting basic research on carbon nanotubes and exploring their potential applications. Carbon nanotubes have a layer spacing of 0.34nm, and it is possible to deposit catalysts on both the inner hole and the outer surface. Its nanoscale size is conducive to obtaining a small catalyst particle size and improving the catalytic performance of the catalyst. At present, a variety of metals and metal oxides have been successfully loaded on carbon nanotubes, such as: Cu (Appl. Phys. Lett. 69 (1996) 345), SiO 2 (J. Mater. Res. 12(1997) 604), V 2 o 5 (Nature 375(1995) 564) et al. Thi...

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): B01J23/10B01J32/00B01J37/02
Inventor 丁俊李延辉徐才录朱跃峰吴德海
Owner TSINGHUA UNIV
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