Cerium oxide, zirconium oxide and aluminum oxide composition with enhanced thermal stability

A technology of thermal stability and cerium oxide, which is applied in the field of metals, can solve the problem of low thermal stability of the composition, and achieve the effect of promoting natural precipitation, increasing solubility, and increasing effective activity

Inactive Publication Date: 2020-10-13
JIANGSU GUOSHENG RARE EARTH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a ceria-zirconia-alumina composition with enhanced thermal stability, which solves the problem that the existing ceria-zirconia-alumina composition often needs to be heated at some high temperature after mixing. Long-term stable use in some occasions, but the record of using metal oxide compositions in these occasions shows that the overall thermal stability of the composition is low

Method used

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  • Cerium oxide, zirconium oxide and aluminum oxide composition with enhanced thermal stability

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: Preparation of basic solution Treatment: Mix 20 parts of zirconium dioxide, 15 parts of cerium oxide, 35 parts of dilanthanum trioxide, 20 parts of neodymium trioxide and 10 parts of aluminum oxide with 10 parts of deionized water respectively , to filter the mixed solution, then fully stir the mixed solution;

[0035] Step 2: Deepening treatment of the metal solution: mix 40 parts of nitric acid, 25 parts of ammonia solution and 40 parts of hydrogen peroxide and add them to the solution respectively, stir the solution fully and then slowly heat it up to 45 degrees Celsius, and the related metals will generate related metal salts Then naturally precipitate in the solution;

[0036] Step 3: Heating and separation treatment: After completely mixing 20 parts of purified water, 20 parts of surfactant, 10 parts of stabilizer and 12 parts of wetting agent in the auxiliary materials, the temperature was raised to 60 degrees Celsius, and then continued Stir for 3 minut...

Embodiment 2

[0041] Step 1: Preparation of basic solution Treatment: Mix 25 parts of zirconium dioxide, 20 parts of cerium oxide, 40 parts of dilanthanum trioxide, 35 parts of neodymium trioxide and 20 parts of aluminum oxide with 35 parts of deionized water respectively , to filter the mixed solution, then fully stir the mixed solution;

[0042] Step 2: Deepening treatment of the metal solution: Mix 55 parts of nitric acid, 30 parts of ammonia solution and 60 parts of hydrogen peroxide and add them to the solution respectively, stir the solution fully and slowly heat it up to 50 degrees Celsius, and the related metals will generate related metal salts Then naturally precipitate in the solution;

[0043] Step 3: Heating and separation treatment: After completely mixing 35 parts of purified water, 25 parts of surfactant, 15 parts of stabilizer and 15 parts of wetting agent in the auxiliary materials, the temperature was raised to 700 degrees Celsius, and then continued Stir for 4 minutes, th...

Embodiment 3

[0048] Step 1: Preparation of basic solution Treatment: Mix 30 parts of zirconium dioxide, 25 parts of cerium oxide, 45 parts of dilanthanum trioxide, 50 parts of neodymium trioxide and 30 parts of aluminum oxide with 60 parts of deionized water respectively , to filter the mixed solution, then fully stir the mixed solution;

[0049] Step 2: Deepening treatment of the metal solution: Mix 70 parts of nitric acid, 35 parts of ammonia solution and 80 parts of hydrogen peroxide and add them to the solution respectively, stir the solution fully and slowly heat it up to 55 degrees Celsius, and the related metals will generate related metal salts Then naturally precipitate in the solution;

[0050] Step 3: Heating and separation treatment: After completely mixing 50 parts of purified water, 30 parts of surfactant, 20 parts of stabilizer and 18 parts of wetting agent in the auxiliary materials, the temperature was raised to 80 degrees Celsius, and then continued Stir for 5 minutes, t...

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Abstract

The invention discloses a cerium oxide, zirconium oxide and aluminum oxide composition with enhanced thermal stability. Raw material components of the composition comprise: main materials comprising,by weight, 20-30 parts of zirconium dioxide, 15-25 parts of cerium dioxide, 35-45 parts of lanthanum trioxide, 20-50 parts of neodymium oxide, 10-30 parts of aluminum oxide, 10-60 parts of deionized water, 40-70 parts of nitric acid, 25-35 parts of an ammonia solution, 40-80 parts of hydrogen peroxide and 60-80 parts of lauric acid; and auxiliary materials comprising, by weight, 20-50 parts of purified water, 20-30 parts of a surfactant, 10-20 parts of a stabilizer and 12-18 parts of a wetting agent. The invention relates to the technical field of metals. Deionized water and metal oxides are fused, so that the solubility of the metal oxides when the metal oxides are prepared into a solution is effectively improved, the yield of subsequent products is greatly increased, completely insolubledregs are effectively prevented from being doped into the solution to participate in reaction by filtering the solution, and the effective activity of the product is improved.

Description

technical field [0001] The invention relates to the field of metal technology, in particular to a ceria zirconia alumina composition with enhanced thermal stability. Background technique [0002] Cerium oxide is light yellow or yellowish brown auxiliary powder. The density is 7.13g / cm3. The melting point is 2397°C. Insoluble in water and alkali, slightly soluble in acid. At a temperature of 2000°C and a pressure of 15MPa, cerium oxide can be obtained by reducing cerium oxide with hydrogen. When the temperature is free at 2000°C and the pressure is free at 5MPa, the cerium oxide is slightly yellowish reddish, and pink. It is used as polishing material, catalyst, catalyst carrier (auxiliary), ultraviolet absorber, fuel cell electrolyte, automobile exhaust absorber, electronic ceramics, etc. Usually it is white odorless and tasteless crystal, insoluble in water, hydrochloric acid and dilute sulfuric acid. Alumina is a high-hardness compound, which requires high purity Al ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01J32/00C09G1/02C09K3/00B01D53/92B01D53/14H01M8/1253H01M8/126
CPCB01D53/14B01D53/92B01D2252/10B01D2258/01B01J23/002B01J23/10B01J2523/00C09G1/02C09K3/00H01M8/1253H01M8/126H01M2300/0071B01J2523/31B01J2523/3706B01J2523/3712B01J2523/3725B01J2523/48Y02E60/50
Inventor 孙贺伟季子生杨宇轩陈赛龙王飞
Owner JIANGSU GUOSHENG RARE EARTH CO LTD
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