Nano-catalyst for electrochemical preparation of hydrogen peroxide, and preparation method and application thereof

A nano-catalyst, hydrogen peroxide technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, etc., can solve high overpotential, limited catalytic activity, adsorption capacity Poor problems, to achieve the effect of increased selectivity and activity, high-quality activity, and high selectivity

Inactive Publication Date: 2020-09-04
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metallic platinum has the best electrocatalytic activity in acidic media, but due to the high dissociation energy required for oxygen reduction, the overpotential required for platinum as a catalyst is too high
Gold is considered to be a promising electrocatalyst for the selective generation of hydrogen peroxide, unlike the Au(100) surface which can catalyze the four-electron reduction to water, and the Au(111) and Au(110) surfaces which can catalyze the two-electron reduction to water Hydrogen peroxide, but gold has a poor adsorption capacity for oxygen. When gold is used as a catalyst, the surface oxygen coverage is low, which limits the catalytic activity.

Method used

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  • Nano-catalyst for electrochemical preparation of hydrogen peroxide, and preparation method and application thereof
  • Nano-catalyst for electrochemical preparation of hydrogen peroxide, and preparation method and application thereof
  • Nano-catalyst for electrochemical preparation of hydrogen peroxide, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036]This embodiment provides an electrocatalytic material for producing hydrogen peroxide, which is prepared through the following steps:

[0037] Add 0.6mL of freshly prepared sodium borohydride (0.01M) ice-water solution to a mixed solution of 0.1M chloroauric acid (0.025mL) and cetyltrimethylammonium bromide (10mL) to prepare into a seed solution. The above mixed solution was vigorously stirred for 2 minutes before use, and aged at room temperature for about 5 minutes before use.

[0038] Dissolve 7.288g of cetyltrimethylammonium bromide in 100mL of warm water at 55°C to make a solution with a concentration of 0.2M, add 2mL of silver nitrate solution with a concentration of 0.01M to the solution, and let it stand at room temperature for 10 Minutes later, add 100mL of chloroauric acid solution with a concentration of 0.8mM, stir the mixed solution gently for about 10 minutes, add 0.9mL of freshly prepared ascorbic acid solution (0.1M), stir rapidly until the solution beco...

Embodiment 2

[0044] This embodiment provides an electrocatalytic material for producing hydrogen peroxide, which is prepared through the following steps:

[0045] Add 0.6mL of freshly prepared sodium borohydride (0.01M) ice-water solution to a mixed solution of 0.1M chloroauric acid (0.025mL) and cetyltrimethylammonium bromide (10mL), Make a seed solution. The above mixed solution was vigorously stirred for 2 minutes before use, and aged at room temperature for about 5 minutes before use.

[0046] Dissolve 7.288g of cetyltrimethylammonium bromide in 100mL of warm water at 55°C to make a solution with a concentration of 0.2M, add 2mL of silver nitrate solution with a concentration of 0.01M to the solution, and let it stand at room temperature for 10 Minutes later, add 100mL of chloroauric acid solution with a concentration of 0.8mM, stir the mixed solution gently for about 10 minutes, add 0.9mL of freshly prepared ascorbic acid solution (0.1M), stir rapidly until the solution becomes color...

Embodiment 3

[0051] This embodiment provides an electrocatalytic material for producing hydrogen peroxide, which is prepared through the following steps:

[0052] Add 0.6mL of freshly prepared sodium borohydride (0.01M) ice-water solution to a mixed solution of 0.1M chloroauric acid (0.025mL) and cetyltrimethylammonium bromide (10mL) to prepare into a seed solution. The above mixed solution was vigorously stirred for 2 minutes before use, and aged at room temperature for about 5 minutes before use.

[0053] Dissolve 7.288g of cetyltrimethylammonium bromide in 100mL of warm water at 55°C to make a solution with a concentration of 0.2M, add 2mL of silver nitrate solution with a concentration of 0.01M to the solution, and let it stand at room temperature for 10 minutes Finally, add 100mL of chloroauric acid solution with a concentration of 0.8mM, stir the mixed solution gently for about 10 minutes, add 0.9mL of freshly prepared ascorbic acid solution (0.1M), and stir rapidly until the soluti...

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Abstract

The invention provides a nano-catalyst for electrochemical preparation of hydrogen peroxide, and a preparation method and application of the nano-catalyst. The preparation method comprises the following steps: preparing a seed solution; preparing a growth solution; preparing gold nanoparticles; preparing gold-platinum nanometer particles; and preparing the nano-catalyst for electrochemical preparation of hydrogen peroxide. The catalyst prepared by the preparation method provided by the invention can be used for catalyzing a reaction for electrochemical preparation of hydrogen peroxide, and theselectivity of hydrogen peroxide is 95% or above.

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof, in particular to a nanometer catalyst used in an electrochemical production method of hydrogen peroxide and a preparation method thereof, belonging to the technical field of hydrogen peroxide production. Background technique [0002] Hydrogen peroxide is an important chemical substance, which has a wide range of applications in the fields of industry, medicine and environmental protection. Due to its strong oxidizing properties, hydrogen peroxide is widely used as a disinfectant and is considered a promising candidate for water treatment, representing a solution to improve clean drinking water, in addition hydrogen peroxide can also be used as Potential energy carrier. [0003] Currently, hydrogen peroxide is produced indirectly through the hydrogenation of anthraquinone with hydrogen followed by oxidation with oxygen in organic solvents, a multistep process that requires large ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/16C25B1/30C25B11/08B22F9/24B22F1/02
CPCB01J23/892B01J35/0033B01J35/0013B01J35/0073B01J37/16C25B1/30B22F9/24B22F1/17
Inventor 李振兴王萍
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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