Method for synthesizing H2O2 through mechanical catalysis

A H2O2, mechanical technology, applied in the field of catalysis, can solve the problems of low carrier mobility, insufficient advantages, and lack of electrical properties, etc., to achieve the effect of expanding the application range, improving electrical conductivity, and enhancing reactivity

Active Publication Date: 2021-07-09
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most piezoelectric materials do not have good electrical properties, and the carrier mobility is low, so that their catalytic efficiency, activity and selectivity are greatly restricted, especially compared with the efficiency of traditional photocatalytic reactions, they still have insufficient advantages.

Method used

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  • Method for synthesizing H2O2 through mechanical catalysis
  • Method for synthesizing H2O2 through mechanical catalysis
  • Method for synthesizing H2O2 through mechanical catalysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A Nb-doped modified tetragonal BaTiO 3 (BaTiO 3 : The preparation method of Nb), its main steps are as follows:

[0042] (1) Weigh 1.0 g of polyethylene glycol (PEG, relative molecular weight 6000) and dissolve it in 14 ml of ethanol-water mixed solution (the volume ratio of ethanol to water is 1:1), and stir magnetically for 10 min to form solvent A.

[0043] (2) Measure 500 μl tetrabutyl titanate solution, press NbCl 5 The molar ratio of tetrabutyl titanate to tetrabutyl titanate is 1:8~11, and the calculated amount of NbCl is weighed 5 , were added to 10ml of absolute ethanol, and ultrasonicated for 3min to form a light white suspension B. Then, liquid B was added dropwise to liquid A, and magnetically stirred for 15 min.

[0044] (3) Weigh 1.4g of sodium hydroxide and dissolve it in 12ml of ethanol-water mixed solution (the volume ratio of ethanol to water is 1:1), and add it dropwise into the fully reacted A liquid and B liquid mixed liquid, Stir magnetically ...

Embodiment 2

[0048] A Nb-doped Modified Tetragonal BaTiO Supported by C Quantum Dots 3 Preparation method of nanorod piezoelectric composite material (BaTiO 3 :Nb / C), its main steps are as follows:

[0049] (1) BaTiO prepared by C and Example 1 3 : The weight percentage of Nb is 0.6~1.8wt.%. Weigh the calculated amount of glucose and BaTiO 3 : Nb powder, dispersed in 30ml deionized aqueous solution, ultrasonic 15min, forming a milky white suspension.

[0050] (2) Transfer the milky white suspension to a closed autoclave, and place it in an oven at 180°C for 6 hours.

[0051] (3) After the reactor was cooled to room temperature, the reaction mixture was taken out, washed 3 to 5 times with deionized water and ethanol solution, and then dried in a 90°C drying oven for 12 hours to obtain BaTiO loaded with C quantum dots. 3 : Nb nanorod piezoelectric composite powder.

Embodiment 3

[0053] A preparation method of pure phase C, its main steps are as follows:

[0054] (1) First weigh 0.75g of glucose and dissolve it in 30ml of deionized water, then transfer it to an autoclave, and react at 160-200°C for 4-8 hours.

[0055] (2) After the reaction kettle was cooled to room temperature, the reaction mixture was taken out and washed with deionized water and ethanol solution for 3 to 5 times, and then dried in a 90°C drying oven for 12 hours to obtain pure-phase nano-C particles.

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Abstract

The invention relates to a method for synthesizing H2O2 by mechanical catalysis, which is characterized in that a catalyst is dispersed into an ethanol-water mixed solution, the mixture is shaded and statically stagnated, then the H2O2 is catalytically synthesized under the ultrasonic vibration condition, and the catalyst contains tetragonal phase BaTiO3 with ferroelectricity. Compared with the prior art, the method has the advantages that mechanical energy can be converted into chemical energy, energy consumption is low, operation is easy, and catalytic materials are free of toxicity and can be recycled.

Description

technical field [0001] The invention relates to the technical field of catalysis, in particular to a mechanically catalyzed synthesis of H 2 o 2 Methods. Background technique [0002] h 2 o 2 As an important pharmaceutical and chemical raw material, it is widely used in the fields of disinfection and sterilization, environmental pollution purification, biomedicine, etc. However, the photocatalytic synthesis of H 2 o 2 The efficiency is generally not high, and the traditional industrial production of H 2 o 2 High energy consumption and serious pollution. [0003] Since the 1990s, researchers from all over the world have carried out a series of fruitful basic research and applied basic research on clean energy conversion, environmental pollution control, and biomedical materials, especially in the production of hydrogen by photocatalytic hydrolysis and Oxygen, synthetic H 2 o 2 , Degradation of organic matter and biological resistance (killing) bacteria and other asp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/026
CPCC01B15/026
Inventor 翟继卫周小风
Owner TONGJI UNIV
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