A double-effect catalyst capable of regulating the decomposition rate of ozone and hydrogen peroxide, its preparation method and application

A decomposition rate, hydrogen peroxide technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve simple preparation methods, large-scale industrial production, and accelerated oxidation decomposition speed effect

Active Publication Date: 2021-08-03
华瑞创源(北京)环保科技有限公司 +1
View PDF22 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, usually the content of ozone produced by the ozone generator does not exceed 10%, and the remaining high-purity oxygen of about 90% is directly discharged into the atmosphere, which is a pity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. A preparation of a dual-effect catalyst capable of regulating the decomposition rate of ozone and hydrogen peroxide, comprising the steps of:

[0026] (1) The gamma-alumina of loading manganese oxide must be prepared:

[0027] Use gamma-alumina pellets with a diameter of 3-5 mm as the catalyst carrier, wash them with water three times, dry them at 120°C for 2 hours, soak them in 1mol / L manganese nitrate solution for 24 hours, and dry them in an oven at 120°C Prepared for 2 hours, then calcined at 400°C for 4 hours to obtain γ-alumina pellets loaded with manganese oxide.

[0028] (2) Preparation of aluminum hydroxide slurry: dissolve aluminum hydroxide powder in a solvent, the solvent is water and ethanol, the volume ratio of ethanol and water is 1:1, and the content of aluminum hydroxide is 10wt%;

[0029] (3) Preparation of mixed slurry:

[0030] Mix iron oxyhydroxide powder and aluminum hydroxide slurry evenly, control the content of iron element to 6wt%, and mak...

Embodiment 2

[0037] 1. A preparation of a dual-effect catalyst capable of regulating the decomposition rate of ozone and hydrogen peroxide, comprising the steps of:

[0038] (1) Preparation of β-alumina loaded with manganese oxide:

[0039] Choose β-alumina pellets with a diameter of 3-5mm as the catalyst carrier, wash them twice with water, dry them at 120°C for 2 hours, soak them in 1mol / L manganese acetate solution for 24 hours, and dry them in an oven at 120°C Prepared for 2 hours, then calcined at 400°C for 4 hours to obtain β-alumina pellets loaded with manganese oxide.

[0040] (2) Preparation of aluminum hydroxide slurry:

[0041] The aluminum hydroxide powder is dissolved in a solvent, the solvent is water and ethanol, the volume ratio of ethanol and water is 1:2, and the content of aluminum hydroxide is 15wt%;

[0042] (3) Preparation of mixed slurry:

[0043] Mix iron oxyhydroxide powder and aluminum hydroxide slurry evenly, control the content of iron element to 6wt%, and ma...

Embodiment 3

[0050] 1. A preparation of a dual-effect catalyst capable of regulating the decomposition rate of ozone and hydrogen peroxide, comprising the steps of:

[0051] (1) Preparation of α-alumina loaded with manganese oxide:

[0052] Select α-alumina pellets with a diameter of 3-5mm as the catalyst carrier, wash them twice with water, dry them at 120°C for 2 hours, soak them in 1mol / L manganese acetate solution for 24 hours, and dry them in an oven at 120°C Prepared for 2 hours, then calcined at 400°C for 4 hours to obtain α-alumina pellets loaded with manganese oxide;

[0053] (2) Preparation of aluminum hydroxide slurry: dissolve aluminum hydroxide powder in a solvent, the solvent is water and ethanol, the volume ratio of ethanol and water is 1:3, and the content of aluminum hydroxide is 25wt%;

[0054] (3) Preparation of mixed slurry:

[0055] Mix iron oxyhydroxide powder and aluminum hydroxide slurry evenly, control the content of iron element to 6wt%, and make a mixed slurry,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a double-effect catalyst capable of regulating the decomposition rate of ozone and hydrogen peroxide, which has a core-shell structure, the core is alumina loaded with manganese, and the shell is alumina loaded with iron oxyhydroxide, wherein the alumina loaded with manganese As a benchmark, the content of manganese element is 5wt% to 10wt%, based on the alumina loaded with iron oxyhydroxide, the content of iron element is 5wt% to 10wt%, the mass ratio of the alumina loaded with manganese to the alumina loaded with iron oxyhydroxide 10:1~1:1. The preparation method of the catalyst of the invention is simple, and large-scale industrial production can be realized.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and specifically relates to a double-effect catalyst capable of regulating the decomposition rate of ozone and hydrogen peroxide, its preparation method and application. Background technique [0002] Advanced oxidation technology has become the main means of treating refractory wastewater due to its strong oxidation capacity, high pollutant removal rate and stable process operation. Among them, ozone catalytic oxidation technology, as an efficient, practical, and non-secondary pollution advanced oxidation technology, has been applied engineeringly in the treatment of refractory wastewater. [0003] With the improvement of emission standards, the single ozone catalytic oxidation technology has encountered a bottleneck. After a lot of wastewater is treated with ozone catalytic oxidation, the chemical oxygen demand (COD) still cannot meet the emission standards. Therefore, p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889C02F1/72C02F1/78
CPCB01J23/8892C02F1/722C02F1/725C02F1/78C02F2305/026
Inventor 李海涛韩小刚刘艳尼
Owner 华瑞创源(北京)环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap