Method for preparing cerium oxide nano particle by auxiliary microwave

A microwave-assisted, nano-particle technology, which is applied in the field of preparation of cerium oxide nanoparticles, can solve the problems of high energy consumption, long reaction time of cerium oxide nanoparticles, irregular particle crystal shape, etc., and achieves good selectivity and easy control of reaction conditions , fast heating effect

Inactive Publication Date: 2008-01-30
BEIJING UNIV OF CHEM TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a microwave-assisted method for preparing cerium oxide nanoparticles, which solves the problems of long reaction time, high energy consumption, and irregular particle crystal shape in the preparation of cerium oxide nanoparticles by the traditional hydrothermal method.

Method used

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  • Method for preparing cerium oxide nano particle by auxiliary microwave
  • Method for preparing cerium oxide nano particle by auxiliary microwave

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Prepare 0.1mol / L Ce(NO 3 ) 3 solution and 0.4mol / L NaAc solution, take 10ml of 0.1mol / LCe (NO 3 ) 3 Put the solution into a beaker, add 2.73g CTAB and stir, then add 10ml of 0.4mol / L NaAc solution, mix and stir. Afterwards, the mixture was put into a microwave autoclave for reaction at 180° C. for 6 h, and cooled to room temperature in the furnace. The reacted solution was taken out, washed three times with deionized water and absolute ethanol respectively, centrifuged, dried, and ground to obtain cerium oxide nanopowder.

[0020] Carry out X-ray diffraction analysis to the obtained powder, the result is shown in Figure 2, and the diffraction peaks appearing in the figure are all CeO 2 The characteristic diffraction peaks confirm that the obtained product is CeO 2 , and there are no impurities in the product.

[0021] The TEM transmission electron microscope photos of the product are shown in Figure 3 and Figure 4, as can be seen from the figure, the CeO prepared ...

Embodiment 2

[0023] Take Ce(Ac) 3 and H 2 O is the reactant, and the same conditions and methods as in Example 1 can be used to prepare CeO with a particle size of nanoscale and uniformity. 2 Powder.

Embodiment 3

[0025] With Ce(NO 3 ) 3 and NaOH as reactants, using the same conditions and methods as in Example 1, can also prepare CeO with a particle size of nanoscale and uniform 2 Powder.

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Abstract

A method to microwave-assisted prepare ceria Nano particles pertains to the preparation technology field of the ceria Nano particles. First cerium ion solution and alkali liquor are mixed and then the mixture is put into a microwave high pressure reaction cylinder, at last the ceria Nano particles, chemical formula of which is CeO2, are obtained by microwave-assisted reaction. The invention has the advantages of simple preparation process, short reaction time, and energy conservation, small particle diameter of ceria Nano particles, good dispersion and structured appearance.

Description

technical field [0001] The invention belongs to the technical field of preparation of cerium oxide nanoparticles, and in particular provides a microwave-assisted method for preparing cerium oxide nanoparticles. Background technique [0002] nano-CeO 2 It is a cheap and widely used industrial material. It can be used as the main matrix material of the oxygen ion conductor of the solid oxide fuel cell (SOFC), and can be used as a luminescent material, electronic ceramics, glass polishing agent and glass decolorization clarifying agent. , can be used as a three-way catalytic aid in the purification of automobile exhaust, and is also an important component of superconductors, ceramics, petroleum cracking catalysts and homogeneous catalysts. Therefore, the exploration of new preparation technologies for cerium oxide nanoparticles has become a hot research topic in recent years. The hydrothermal method is a chemical method for preparing nanomaterials. This method provides a physi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/00
Inventor 郭广生张悦
Owner BEIJING UNIV OF CHEM TECH
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