Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ozone oxidation catalyst based on active gamma-alumina ball carrier and preparation method thereof

A technique for oxidation of alumina balls and ozone, applied in the direction of metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as difficult catalytic oxidation, and reduce operating costs , low price, simple and easy-to-control effect

Inactive Publication Date: 2019-02-26
光大水务(深圳)有限公司
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an ozone oxidation catalyst based on active gamma-alumina spherical carrier and its preparation method, aiming to solve the problem that the existing ozone oxidation catalyst based on active gamma-alumina spherical carrier is difficult to catalyze and oxidize nbsCOD, and then It is difficult to efficiently achieve COD below 30mg / L in the process of sewage treatment

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ozone oxidation catalyst based on active gamma-alumina ball carrier and preparation method thereof
  • Ozone oxidation catalyst based on active gamma-alumina ball carrier and preparation method thereof
  • Ozone oxidation catalyst based on active gamma-alumina ball carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] And, the embodiment of the present invention also provides a preparation method of an ozone oxidation catalyst based on active gamma-alumina spherical support, comprising the following steps:

[0023] S01. Provide active gamma-alumina balls, dry them after cleaning, and test the water absorption of the dried active gamma-alumina balls;

[0024] S02. The activated γ-alumina balls are placed in a container, and the metal oxide precursor solution is added by an equal-volume impregnation method, and the metal oxide precursor is adsorbed and then dried;

[0025] S03. Put the active gamma-alumina balls adsorbed with the metal oxide precursor into a heating device, heat and calcinate them at 250-600°C for 2-8 hours, and obtain the activated gamma-alumina ball carrier based on the active gamma-alumina balls after aging treatment Ozone oxidation catalyst.

[0026] Specifically, in the above step S01, preferably, the activated γ-alumina balls have a diameter of 4-6mm and a speci...

Embodiment 1

[0039] 1000 grams of activated alumina balls were washed 3 times with tap water and dried in a drying oven at 120°C. Put the weighed active alumina balls into 900 ml of 0.128 mol / L manganese nitrate solution for medium-volume immersion treatment, and stir for 3 hours. The activated alumina balls adsorbing manganese nitrate were placed in a drying oven at 40°C for 10 h. The dried samples were put into a resistance furnace for calcination at a rate of 2°C / min to 250°C and kept for 2h. Finally, the calcined sample was washed with tap water to remove surface fine powder, and put into a drying oven at 120° C. for 10 h to obtain an ozone oxidation catalyst with a loading capacity of 1%.

Embodiment 2

[0041] 1000 grams of activated alumina balls were washed 3 times with tap water, and dried in a drying oven at 150°C. Put the weighed activated alumina balls into 900 ml of 0.703 mol / L manganese nitrate solution for medium-volume impregnation, and stir for 7.5 hours. The activated alumina balls adsorbing manganese nitrate were put into a drying oven and dried at 70°C for 29h. The dried samples were placed in a resistance furnace for calcination at a rate of 6 °C / min to 425 °C and kept for 5 h. Finally, the calcined samples were washed with tap water to remove surface fine powder, and put into a drying oven at 150° C. for 29 hours to dry the ozone oxidation catalyst with a loading capacity of 5.5%.

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
diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
clearance rateaaaaaaaaaa
Login to View More

Abstract

The invention provides an ozone oxidation catalyst based on an active gamma-alumina ball carrier. The ozone oxidation catalyst based on the active gamma-alumina ball carrier is an active gamma-aluminaball-supported metal oxide, wherein the metal oxide is at least one selected from a group consisting of iron oxide, copper oxide, ruthenium oxide, cerium oxide, cobalt oxide, manganese oxide and nickel oxide.

Description

technical field [0001] The invention belongs to the technical field of ozone catalytic oxidation, and in particular relates to an ozone oxidation catalyst based on an active gamma-alumina spherical carrier and a preparation method thereof. Background technique [0002] With the development of industry, more and more industrial wastewater enters the sewage pipe network. At the same time, there are more and more urban sewage treatment plants and sewage treatment plants in industrial parks that mainly use industrial wastewater. As the environmental protection situation becomes more and more serious, the requirements for the effluent water quality of urban sewage treatment plants are becoming more and more stringent. In the secondary treatment of conventional sewage treatment plants, biochemical treatment has removed most of the biodegradable COD, and the rest is mainly soluble non-degradable organic matter (nbsCOD). With the full implementation of the first-level A standard, ev...

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 Applications(China)
IPC IPC(8): B01J23/34B01J23/745B01J23/755B01J23/75B01J23/72B01J23/46B01J23/10B01J35/10C02F1/78
CPCC02F1/725C02F1/78B01J23/002B01J23/10B01J23/34B01J23/462B01J23/72B01J23/745B01J23/75B01J23/755C02F2209/08B01J35/615
Inventor 石伟蒋延梅刘爱宝荣颖慧刘晓静王冠平杜庆洋
Owner 光大水务(深圳)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com