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Process for manufacturing high-dispersity multi-element nano inorganic metal oxide single-phase crystal structure through one-step thermal reaction

A technology with high dispersibility and process technology, applied in the field of synthesizing high dispersity nanometer solid solution oxide preparation, can solve problems such as increasing the production cost of nanometer oxide, and achieve the effect of large surface area, small particle size, and improved combustion reactivity

Pending Publication Date: 2021-12-24
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This high-temperature heat treatment process not only increases the production cost of nano-oxides, but also leads to the further combination of nanoparticles into larger particles.

Method used

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  • Process for manufacturing high-dispersity multi-element nano inorganic metal oxide single-phase crystal structure through one-step thermal reaction
  • Process for manufacturing high-dispersity multi-element nano inorganic metal oxide single-phase crystal structure through one-step thermal reaction
  • Process for manufacturing high-dispersity multi-element nano inorganic metal oxide single-phase crystal structure through one-step thermal reaction

Examples

Experimental program
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Effect test

Embodiment 1

[0066] A process technology for one-step thermal reaction and highly dispersed multi-component nano-inorganic metal oxide single-phase crystal structure, comprising the following steps:

[0067] (1) Set Y(NO 3 ) 3 , ZrO(NO 3 ) 2 To configure 20mmole 8YSZ (8mol%Y 2 o 3 stabilized ZrO 2 ) for chemical dosage, dissolve it in 50mL deionized water, add a citric acid clamping agent with 1.5 times the total molar number of metal ions, and keep stirring. For example, add 5 mL of nitric acid to the solution one by one until the metal compound is completely dissolved. In this example, 10mL of 16mol / L concentrated nitric acid was used and heated at 80°C to dissolve to obtain an aqueous solution;

[0068] (2) Add a glycine combustion agent with 1.5 times the total molar number of metal ions in the above aqueous solution, stir until dissolved, and obtain a reaction solution;

[0069] (3) Pour the reaction solution into the combustion reaction vessel in the above-mentioned reaction...

Embodiment 2

[0073] A process technology for one-step thermal reaction and highly dispersed multi-component nano-inorganic metal oxide single-phase crystal structure, comprising the following steps:

[0074] (1) Set Y(NO 3 ) 3 , ZrO(NO 3 ) 2 To configure 20mmole 8YSZ (8mol%Y 2 o 3 stabilized ZrO 2 ) for chemical dosage, dissolved in 50mL deionized water, added citric acid clamping agent with 1.5 times the total molar number of metal ions, and continued to stir. For example, add 5 mL of nitric acid to the solution one by one until the metal compound is completely dissolved. In this example, 10mL of 16mol / L concentrated nitric acid was used and heated at 80°C to dissolve to obtain an aqueous solution;

[0075] (2) Add 0.1% of a 1:1 mixture of glycine burning agent and azodicarbonamide and 4,4-oxobisbenzenesulfonylhydrazide to the above aqueous solution as a foaming agent , stirred until dissolved to obtain a reaction solution;

[0076] (3) Pour the reaction solution into the combus...

Embodiment 3

[0080] A process technology for one-step thermal reaction and highly dispersed multi-component nano-inorganic metal oxide single-phase crystal structure, comprising the following steps:

[0081] (1) Set Y(NO 3 ) 3 , ZrO(NO 3 ) 2 To configure 20mmole 8YSZ (8mol%Y 2 o 3 stabilized ZrO 2 ) for chemical dosage, dissolved in 50mL deionized water, added citric acid clamping agent with 1.5 times the total molar number of metal ions, and continued to stir. For example, add 5 mL of nitric acid to the solution one by one until the metal compound is completely dissolved. In this example, 10mL of 16mol / L concentrated nitric acid was used and heated at 80°C to dissolve to obtain an aqueous solution;

[0082](2) Add 0.3% of a 1:1 mixture of glycine burning agent and azodicarbonamide and 4,4-oxobisbenzenesulfonylhydrazide to the above aqueous solution as a foaming agent , stirred until dissolved to obtain a reaction solution;

[0083] (3) Pour the reaction solution into the combust...

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Abstract

The invention discloses a process for manufacturing a high-dispersity multi-element nano inorganic metal oxide single-phase crystal structure through one-step thermal reaction. According to the invention, a novel chemical sol-gel combustion method is adopted and matched with a nano oxide processing device for optimizing a combustion reaction and inhibiting an agglomeration phenomenon, so that a single-phase structure which is low in agglomeration phenomenon, smaller in particle size, larger in surface area and capable of completely forming a target compound can be obtained through a one-step reaction process.

Description

technical field [0001] The invention relates to the technical field of preparing highly dispersed nanometer solid solution oxides, in particular to a process for improving the agglomeration phenomenon of nanometer oxides and further improving surface chemical catalytic efficiency. Background technique [0002] The high surface chemical reaction characteristics of nanocatalytic materials have a wide range of applications. In terms of alternative energy, catalytic hydrogen production technology, electrochemical reaction activity of fuel cell electrodes, and lignin conversion to biofuel, etc. In the field of medicine and public health, the photoelectric degradation reaction of nano-titanium oxide for improving environmental sanitation is also attracting great attention. The application of these nano-catalytic materials is basically based on the use of nano-level particles with high catalytic reaction surface area, and through the adsorption of reactants on the surface of catal...

Claims

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Application Information

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IPC IPC(8): B01J23/10B01J35/10
CPCB01J23/10B01J35/61
Inventor 温良成曹更玉梁咏芯马泽荣柯旭阳余思亭何欣悦梁晓贤严日峰
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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