Tungstate-based catalytic material and application thereof in hydrogen peroxide production through water oxidation

A catalytic material, hydrogen peroxide technology, applied in the field of electrochemistry, can solve problems such as the inability to produce hydrogen peroxide cheaply, and achieve excellent market application prospects, low energy consumption, and high commercial value

Active Publication Date: 2021-01-26
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a tungstate-based catalytic material to solve the problem that the existing electrocatalytic synthesis of hydrogen peroxide proposed in the background technology cannot be easily and inexpensively produced in an environment-friendly environment. hydrogen peroxide problem

Method used

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  • Tungstate-based catalytic material and application thereof in hydrogen peroxide production through water oxidation
  • Tungstate-based catalytic material and application thereof in hydrogen peroxide production through water oxidation
  • Tungstate-based catalytic material and application thereof in hydrogen peroxide production through water oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of catalytic material based on tungstate, the concrete preparation method is as follows:

[0061] In this experiment, the catalytic material based on tungstate, Bi 2 WO 6 One-component tungstate catalyst. Specifically, 1.5mmol Bi(NO 3 ) 3 ·5H 2 The mixture of O and 1.5mmol citric acid was dissolved in 1mol / L dilute nitric acid to form a transparent solution; meanwhile, 0.725mmol Na 2 WO 4 2H 2 O and 0.6g PVP were dissolved in 30mL of deionized water; then the above two solutions were mixed together to obtain a mixed solution, and the pH of the mixed solution was adjusted to 7 with a certain amount of NaOH solution, and the resulting clear solution was added to 50mL of poly In the PTFE-lined autoclave, the maximum can reach 80% of the total volume; the high-pressure steam of the PTFE-lined autoclave is sealed in a stainless steel tank, and heated to 180°C for hydrothermal reaction for 12 hours; the final product is distilled water washed several times, and...

Embodiment 2

[0063] With the Bi prepared in Example 1 2 WO 6 The sample is used as a catalyst to test its performance in water oxidation to produce hydrogen peroxide. Specifically, the three-electrode electrolysis device includes an electrolysis cell, electrodes, electrolyte solution, and diaphragm. Described electrode comprises working electrode, opposite electrode and reference electrode, diaphragm selects proton exchange membrane nafion117 for use, and electrolytic cell is separated into cathode area and anode area by proton exchange membrane nafion117, and anode area is made of FTO conductive glass (SnO2 conductive glass doped with fluorine ) is the working electrode, and the catalyst is Bi 2 WO 6 For the sample, a platinum plate is used as the counter electrode in the cathode area, and a silver / silver chloride electrode is used as the reference electrode. A saturated potassium bicarbonate solution is injected into the electrolytic cell as the electrolyte solution, and the potential ...

Embodiment 3

[0065] A kind of catalytic material based on tungstate, the concrete preparation method is as follows:

[0066] In this experiment, the catalytic material based on tungstate, that is, CaWO, was synthesized by using sodium tungstate, calcium nitrate, citric acid, nitric acid, PVP, and sodium hydroxide as raw material reagents by hydrothermal synthesis. 4 One-component tungstate catalyst. Specifically, 1 mmol Ca(NO 3 ) 2 4H 2 The mixture of O and 1mmol citric acid was dissolved in 1mol / L dilute nitric acid to form a transparent solution; at the same time, 1mmol Na 2 WO 4 2H 2 O and 0.6g PVP were dissolved in 30mL of deionized water; then the above two solutions were mixed together to obtain a mixed solution, and the pH of the mixed solution was adjusted to 7 with a certain amount of NaOH solution, and the resulting clear solution was added to 50mL of poly In the PTFE-lined autoclave, the maximum can reach 80% of the total volume; the high-pressure steam of the PTFE-lined a...

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Abstract

The invention relates to the field of electrochemistry, and particularly discloses a tungstate-based catalytic material and application thereof in hydrogen peroxide production through water oxidation.The tungstate-based catalytic material can be used for hydrogen peroxide production by water oxidation electrochemical reaction in a more environment-friendly, energy-saving, safe and reliable manner. The tungstate-based catalytic material provided by the invention has the advantages of no toxicity, harmlessness, environmental protection, simple and integrated device and equipment, uncomplicatedoperation, low energy consumption, extremely high application commercial value and wide application prospect, and the raw materials of the whole process are water which is easy to obtain everywhere inthe chemical reaction process of producing hydrogen peroxide through water oxidation. The material solves the problem that hydrogen peroxide cannot be simply produced with low cost under the environment-friendly condition in the existing method for synthesizing hydrogen peroxide through electro-catalysis, and has an excellent market application prospect.

Description

technical field [0001] The invention relates to the field of electrochemistry, in particular to a tungstate-based catalytic material and its application in water oxidation to produce hydrogen peroxide. Background technique [0002] As a very important chemical, hydrogen peroxide is not only one of the most environmentally friendly and effective oxidants, but also an excellent potential energy carrier inorganic compound. When used as an oxidant, the oxidation by-products of hydrogen peroxide are only water and oxygen, and its active oxygen content is as high as about 47%, second only to molecular oxygen. Therefore, in industrial production, pharmaceuticals and environmental protection, hydrogen peroxide has a wide range of applications, such as: wastewater treatment, industrial bleaching (bleaching of paper / pulp / textiles), fuel cells, mining processing (gold, chrome, copper, etc. extraction and separation), chemical oxidation (including large-scale production from propylene ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30C25B1/30
CPCB01J23/30C25B1/30B01J35/0033
Inventor 陈平黄力范超超胡俊范伟郝小强吕亚文
Owner ANHUI UNIVERSITY
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