Method for preparing line shape or stick shape polycrystalline Ce0.6Zr0.3Y0.1O2 solid solution

A solid solution and rod-shaped technology, applied in chemical instruments and methods, catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, etc., can solve difficult problems such as high-temperature sintering of cerium and zirconium, affecting catalytic performance, etc. Achieve the effect of improving anti-poisoning ability, increasing service life and reducing poisoning

Inactive Publication Date: 2008-02-20
BEIJING UNIV OF TECH
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AI Technical Summary

Problems solved by technology

[0005] In recent years, on linear CeO 2 There are many reports on cerium-zirconium, and the research work on cerium-zirconium has also increased a lot, but it is difficult to solve the problem of high-temperature sintering of cerium-zirconium, which affects its catalytic performance.

Method used

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  • Method for preparing line shape or stick shape polycrystalline Ce0.6Zr0.3Y0.1O2 solid solution
  • Method for preparing line shape or stick shape polycrystalline Ce0.6Zr0.3Y0.1O2 solid solution
  • Method for preparing line shape or stick shape polycrystalline Ce0.6Zr0.3Y0.1O2 solid solution

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Embodiment 1

[0014] Example 1: Under normal temperature, normal pressure and magnetic stirring conditions, 7.278g CTAB was dissolved in 75ml deionized water, stirred and dissolved; 0.006mol Ce(NO 3 ) 3 .6H 2 O, 0.003mol ZrO(NO 3 ) 2 2H 2 O, 0.001molY (NO 3 ) 3 ·6H 2 O, dissolve in 5ml deionized water, stir to dissolve, add the above mixed solution containing cerium, zirconium and yttrium to the CTAB solution, then add 0.2mol urea to the solution, continue to stir for 2h, then transfer the above solution Put it into a stainless steel reaction kettle (60% volume filling) lined with polytetrafluoroethylene, then put it in a constant temperature box and keep it warm for 72h at 120°C, then cool naturally to room temperature, filter the obtained product, deionize and ethanol respectively After washing, drying, and grinding evenly, the target product precursor is obtained, and then the precursor is placed in a muffle furnace, and the temperature is raised to 550°C in an air atmosphere at a...

Embodiment 2

[0015] Embodiment 2: Obtain the solution according to Embodiment 1, transfer it to a stainless steel reaction kettle lined with polytetrafluoroethylene, put it into a constant temperature box and insulate it at 160°C for 72h, then cool naturally to room temperature, and the obtained product After filtration, deionization and ethanol washing, drying and grinding, the target product precursor was obtained, and then the precursor was placed in a muffle furnace and burned at a rate of 1 °C / min to 550 °C in an air atmosphere for 3 After h, the linear or rod-shaped polycrystalline Ce 0.6 Zr 0.3 Y 0.1 o 2 Solid solution, the length is 30nm ~ 2μm.

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Abstract

The invention relates to a preparing method for the linear or clubbed multi crystal Ce0.6Zr0.3Y0.1O2 sosoloid. The traditional method is hard to make the linear or clubbed multi crystal Ce0.6Zr0.3Y0.1O2 sosoloid. The invention takes the cetyl trimethylammonium bromide of a lower price as the surface active agent, obtain the Ce0.6Zr0.3Y0.1O2 avant garde via the water heating process, and then obtain the linear or clubbed multi crystal Ce0.6Zr0.3Y0.1O2 sosoloid by burning, wherein, the length of the linear or clubbed body is thirty nanometer to two micron. The invention can obtain cerium zirconium yttrium compound oxide and is the catalyst material in the material domain. The material has a wide applying potential in the multi catalyze, the storing and releasing of the oxygen, the solid fuel battery, the optical material, the solid electrolyte, the solid sensor and the high temperature heat proof refrigeration material.

Description

technical field [0001] The invention relates to a linear or rod-shaped polycrystalline Ce 0.6 Zr 0.3 Y 0.1 o 2 Solid solution preparation method, specifically relate to utilizing hydrothermal synthesis method to prepare polycrystalline Ce 0.6 Zr 0.3 Y 0.1 o 2 solid solution method. Background technique [0002] In the past ten years, cerium-based oxides and cerium-zirconium solid solutions have attracted attention because of their ability to store and release oxygen. pollution. In recent years, cerium-zirconium solid solution has been favored by more environmentalists, and its application fields are constantly expanding. [0003] The traditional methods of preparing cerium-zirconium solid solution include sol-gel method, homogeneous precipitation method, template synthesis method, etc., but the stability of the cerium-zirconium solid solution prepared by these methods is poor, and crystal transformation often occurs due to high temperature burning. As a result, its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/10B01J23/10
Inventor 戴洪兴张玉娟邓积光何洪訾学红
Owner BEIJING UNIV OF TECH
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