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Platinum oxide nano powder and preparation method thereof

A nano-powder and platinum oxide technology, which is applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems that platinum oxide nano-powders are not suitable for large-scale production, high cost, and easy to agglomerate, and achieve no special Requirements, small particle size, good stability effect

Active Publication Date: 2015-06-24
溧阳市超强链条制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the preparation methods of platinum oxide nanopowders are not suitable for large-scale production, high cost, and easy to agglomerate.

Method used

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  • Platinum oxide nano powder and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of platinum oxide nanopowder:

[0021] (1) Pre-treatment of the platinum sheet; the platinum sheet is ultrasonically cleaned in deionized water, alcohol, and acetone solution, and dried in the air for later use;

[0022] (2) In the mixed solution (20ml hydrogen peroxide (30wt%) and 20ml deionized water) container that fills hydrogen peroxide and deionized water, add hydrogen fluoride, fully dissolve, be configured into mixed solution, the concentration of hydrogen fluoride in mixed solution is 0.025mol / L;

[0023] (3) Hydrothermal treatment: Put the platinum sheet in step a obliquely into the autoclave, take the mixed solution in step 2 and move it into the inner tank of the autoclave, and then seal the autoclave; keep the autoclave at 150°C for 15h , naturally cooled to room temperature, then opened the reactor, heated at 60°C to completely evaporate the solution in the reactor, and white powder was formed at the bottom of the reactor and on the...

Embodiment 2

[0026] The preparation method of platinum oxide nanopowder:

[0027] (1) Pre-treatment of the platinum sheet; the platinum sheet is ultrasonically cleaned in deionized water, alcohol, and acetone solution, and dried in the air for later use;

[0028] (2) In the mixed solution (20ml hydrogen peroxide (30wt%) and 20ml deionized water) container that fills hydrogen peroxide and deionized water, add hydrogen fluoride, fully dissolve, be configured into mixed solution, the concentration of hydrogen fluoride in mixed solution is 0.025mol / L;

[0029] (3) Hydrothermal treatment: Put the platinum sheet in step a obliquely into the autoclave, take the mixed solution in step 2 and move it into the inner tank of the autoclave, and then seal the autoclave; keep the autoclave at 180°C for 15h , naturally cooled to room temperature, then opened the reactor, heated at 70°C to completely evaporate the solution in the reactor, and produced white powder at the bottom of the reactor and on the p...

Embodiment 3

[0032] The preparation method of platinum oxide nanopowder:

[0033] (1) Pre-treatment of the platinum sheet; the platinum sheet is ultrasonically cleaned in deionized water, alcohol, and acetone solution, and dried in the air for later use;

[0034] (2) In the mixed solution (20ml hydrogen peroxide (30wt%) and 20ml deionized water) container that fills hydrogen peroxide and deionized water, add hydrogen fluoride, fully dissolve, be configured into mixed solution, the concentration of hydrogen fluoride in mixed solution is 0.025mol / L;

[0035] (3) Hydrothermal treatment: Put the platinum sheet in step a obliquely into the autoclave, take the mixed solution in step 2 and move it into the inner tank of the autoclave, and then seal the autoclave; keep the autoclave at 220°C for 15h , naturally cooled to room temperature, then opened the reactor, heated at 80°C to completely evaporate the solution in the reactor, and white powder was formed at the bottom of the reactor and on the...

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Abstract

The invention relates to platinum oxide nano powder and a preparation method thereof, for solving the problems of complicated process, relatively high cost and the like in the prior art. The platinum oxide nano powder is obtained by the steps of performing hydrothermal reaction on platinum sheets in a mixed solution of hydrogen peroxide and hydrogen fluoride, then evaporating all solvents to obtain white powder, flushing and drying. The particle diameter of platinum oxide is 10-50nm. The process is simple, surfactants and complicated processes are not needed, and the preparation method is suitable for large-scale batch production of the platinum oxide nano powder.

Description

technical field [0001] The invention relates to the technical field of platinum oxide nanopowder, especially the preparation method of platinum oxide nanopowder. Background technique [0002] The well-known heterogeneous Adams catalyst of platinum dioxide (PtO2) has the advantages of excellent catalytic performance, high activity, high selectivity, long service life and recyclability. Adams catalyst has always played an important role in hydrogenation catalytic reactions. It can hydrogenate A variety of groups, often used in the hydrogenation or hydrogenation of ethylenic bonds, hydroxyl groups, aldehyde groups, imine groups, aromatic nitro groups and aromatic rings. [0003] In 1922, Adams prepared a platinum oxide solid catalyst by reacting chloroplatinic acid and sodium nitrate at 450°C. In 1999, Reetz et al. used a quaternary ammonium salt surfactant as a stabilizer to hydrolyze the alkaline solution of PtCl4 at 50°C for 7 days to produce The water-soluble platinum oxid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G55/00B82Y30/00
Inventor 蒋俊美蒋俊波蒋阿生
Owner 溧阳市超强链条制造有限公司