Method for synthesis of nano cerium zirconium solid solution through microemulsion method

A cerium zirconium solid solution, microemulsion technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, etc. It can solve the problems of long aging time, etc., to achieve the effect of short aging time, simple post-processing and easy operation.

Inactive Publication Date: 2016-02-24
刘义林
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the operation of the dripping method adopted is complicated, and the follow-up treatment process is cumbersome, and the aging time is too long, which is not suitable for industrial production

Method used

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  • Method for synthesis of nano cerium zirconium solid solution through microemulsion method

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Embodiment 1

[0023] First prepare a mixed solution of cetyltrimethylammonium bromide (CTAB), n-butanol, and cyclohexane with a molar ratio of 1:8:34, and divide it into two parts for later use. A mixture of cerium nitrate and zirconium oxynitrate (molar ratio Ce:Zr=67:33) is added to one part to form a microemulsion, and the other part is added to ammonia water to form a microemulsion. The two microemulsions were mixed under vigorous stirring and aged for 12 h at room temperature. After filtering and fully washing with deionized water, the precipitate was washed with absolute ethanol. Then dry it in a drying oven at 110°C for 2 hours, and then bake it at 500°C for 2 hours.

[0024] The X-ray diffraction pattern of cerium-zirconium solid solution is shown in figure 1 . The X-ray (XRD) analysis of the sample adopts the BrukerAXDD8advance type X-ray diffractometer produced by Germany Bruker Company to measure, using CuK α X-ray, voltage 40kV, current 40mA, scanning range 2θ=20°~80°. From...

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Abstract

The invention relates to a method for synthesis of nano cerium zirconium solid solution through a microemulsion method. The concrete operation steps of the method are as follows: firstly, a mixed solution of hexadecyl trimethyl ammonium bromide,n-butanol and cyclohexane is prepared, and the mixed solution is divided into two parts evenly for standby; secondly, one part of the mixed solution obtained in the first step is added into a mixed solution of cerium nitrate and zirconium oxynitrate and microemulsion A is prepared; thirdly, the other part of the mixed solution obtained in the first step is added into ammonium hydroxide and microemulsion B is prepared; fourthly, the microemulsion A and the microemulsion B are mixed with violent stirring, and the mixture is subjected to aging for 12h at a room temperature; fifthly, the mixture obtained in the fourth step is filtered, the obtained aged material is washed in deionized water and absolute ethyl alcohol, dried for 2h at a temperature of 110 DEG C, and calcined for 2h at a temperature of 500 DEG C and nano cerium zirconium solid solution is obtained. Operation is simple, steps are simple, cerium zirconium solid solution with a high specific surface area can be obtained in a short time, and the method is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for preparing a cerium-zirconium solid solution, in particular to a method for synthesizing a nano-cerium-zirconium solid solution by a microemulsion method. Background technique [0002] Photocatalytic reaction is one of the ways of interaction between light source and matter, it is a combination of photoreaction and catalytic reaction, and it is a chemical reaction under the simultaneous action of light and catalyst. The photocatalytic reaction mechanism is generally through light, the surface of the photocatalyst will generate electron-hole pairs, and the holes will further interact with water to generate highly active hydroxyl radicals·OH, which will undergo redox reactions with the compound molecules adsorbed on the surface of the catalyst, and the It degrades to very small molecules. At present, environmental and energy issues are major bottlenecks faced by human beings and must be solved. Photocatalytic oxidati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01J35/10B01J37/04
CPCB01J23/10B01J35/1004B01J37/04B01J2523/00
Inventor 刘义林
Owner 刘义林
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