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Method for preparing zirconium oxide polycrystalline powder with ordered laminar nanostructure/mesoporous structure by using surfactant as template

A surfactant, layered nanotechnology, applied in zirconia and other directions, can solve the problems of poor crystallinity, high cost, low thermal stability, etc., to improve the degree of order, ensure thermal stability, and improve thermal stability. Effect

Inactive Publication Date: 2010-12-15
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

To overcome the shortcomings of the existing nano-zirconia powder preparation methods such as complex process, harsh conditions, high cost, poor crystallinity, low thermal stability, and disordered arrangement of zirconia nanocrystals

Method used

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  • Method for preparing zirconium oxide polycrystalline powder with ordered laminar nanostructure/mesoporous structure by using surfactant as template
  • Method for preparing zirconium oxide polycrystalline powder with ordered laminar nanostructure/mesoporous structure by using surfactant as template
  • Method for preparing zirconium oxide polycrystalline powder with ordered laminar nanostructure/mesoporous structure by using surfactant as template

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) 0.003mol ZrOCl 2 ·8H 2 Dissolve O in a flask containing 20mL of water, then add 20mL of ethanol to the flask, mix the solution evenly, and set aside;

[0031] (2) Dissolve 0.18g of sodium dodecyl sulfonate in a beaker filled with 20mL of water, then add 20mL of ethanol to the beaker, mix the solution evenly, and set aside;

[0032] (3) Dissolve 0.72g of sodium hydroxide in a beaker filled with 10mL of water, then add 10mL of ethanol, mix the solution evenly, and set aside;

[0033] (4) under electromagnetic stirring conditions, the mixed solution prepared in steps (2) and (3) is added in the flask in step (1), the temperature is raised, and the reaction is refluxed for 2 hours;

[0034] (5) Then the mixture obtained in the step (4) is moved to the inner sleeve polytetrafluoroethylene container of the reactor, sealed, the reactor is put into an oven, the temperature is raised to 160° C., and the hydrothermal reaction is carried out under autogenous pressure for 12 ...

Embodiment 2

[0041] The amount of ethanol is halved in step (1), (2) and (3) in embodiment 1, and other steps are with embodiment 1. Obtain product with embodiment 1.

Embodiment 3

[0043]The amount of ethanol in step (1), (2) and (3) in embodiment 1 is doubled, and other steps are with embodiment 1. The product obtained is the same as in Example 1.

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Abstract

The invention discloses a method for preparing zirconium oxide polycrystalline powder with ordered laminar nanostructure / mesoporous structure by using a surfactant as a template. The method comprises the following steps of: (1) weighing 20 parts of mixed solution of zirconium oxychloride, water and alcohol; (2) weighing 20 parts of mixed solution of sodium dodecyl sulfate, water and alcohol; (3) weighing 10 parts of mixed solution of sodium hydroxide, water and alcohol; (4) adding the mixed solution prepared in the step (2) and the mixed solution prepared in the step (3) into a flask in the step (1) to reflux and react for 1 to 4 hours with stirring; (5) heating and performing hydrothermal reaction on the mixture for 12 to 36 hours under autogenous pressure; (6) standing the stock solution at the room temperature, washing the product, filtering or performing centrifugal separation on the product and drying the product; and (7) raising the temperature to 500 DEG C and calcining the product for 2 hours to obtain the zirconium oxide polycrystalline powder with ordered laminar nanostructure / mesoporous structure. By using a new method of combined reflux method and hydrothermal method and the surfactant as the template, the degree of order of the product is improved and high thermal stability of the product is ensured.

Description

technical field [0001] The technical solution of the present invention belongs to the technical synthesis field of ordered nanostructure and mesoporous structure materials, and is specifically a method for preparing ordered layered nano / mesoporous structure zirconia polycrystalline powder by using a surfactant as a template. Background technique [0002] Zirconia is the only transition metal oxide with surface acidic and basic sites. It has excellent ion exchange performance, high temperature conductivity and oxygen vacancies enriched on the surface. It can be used as catalyst, electrode material, solid electrolyte and gas transmission. Sensitive material. In addition, its excellent mechanical, thermal, optical, and electrical properties are also widely used in high-temperature structural materials, fuel cells, rubber, ceramics, and other fields. Zirconia with ordered nanostructure or mesoporous structure has more excellent related properties. [0003] The commonly used me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02
Inventor 刘超赵珊珊纪秀杰李松马东霞
Owner HEBEI UNIV OF TECH
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