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

Cr ion doped mn 3 o 4 Thermocatalytic material, preparation method and application thereof

An ion doping and thermal catalysis technology is applied in the field of Cr ion doped Mn3O4 thermal catalytic material and its preparation, which can solve the problems of low utilization rate of photocatalysis and small photoresponse range, so as to improve the thermal catalytic activity, and the raw materials are cheap and easy to use. easy to transfer

Active Publication Date: 2022-07-19
LIAONING UNIVERSITY
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of photocatalytic materials on their own bandwidth, the larger the bandwidth, the smaller the photoresponse range and the lower the photocatalytic utilization

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
  • Cr ion doped mn <sub>3</sub> o <sub>4</sub> Thermocatalytic material, preparation method and application thereof
  • Cr ion doped mn <sub>3</sub> o <sub>4</sub> Thermocatalytic material, preparation method and application thereof
  • Cr ion doped mn <sub>3</sub> o <sub>4</sub> Thermocatalytic material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Cr ion doping of Mn 3 O 4 Thermocatalytic material Cr-Mn 3 O 4

[0032] The preparation method is as follows:

[0033] 1) Add 2.86g of 50% manganese nitrate into a beaker containing 10ml of deionized water, and stir for 15min to fully dissolve it;

[0034] 2) Add 0.64g of sodium hydroxide to a beaker of 10ml of deionized water, and stir for 15min to fully dissolve it;

[0035] 3) adding 1.28g of chromium nitrate nonahydrate (the molar amount of Cr is 10% of the molar amount of Mn) into the manganese salt solution obtained in step 1), and ultrasonically mixing it uniformly;

[0036] 4) dropping the mixed solution obtained in step 3) into the sodium hydroxide solution, and ultrasonicating for 30 minutes until the solution is uniformly mixed;

[0037] 5) The solution obtained in step 4) is placed in a centrifuge, and a precipitate is obtained after centrifugation.

[0038] 6) placing the mixed solution obtained in step 5) in an oven, drying at 60°C, and naturall...

Embodiment 2

[0044] Example 2 Application

[0045] (1) The effect of different catalytic materials on the catalytic degradation rate of isopropanol at different temperatures

[0046] The test process is: respectively take 0.1 g of pure Mn prepared in Example 1 3 O 4 and Cr-Mn prepared with 10% Cr doping 3 O 4 The thermocatalysts were loaded into quartz flow reactors respectively, and then the reactors were placed in a constant temperature box, and then connected with flowing isopropanol, and the flow rate was adjusted to 1.37ml / s. The thermocatalytic degradation of isopropanol was carried out at different temperatures under dark conditions, and the peak areas of degraded isopropanol and initial isopropanol were recorded. Calculate the amount of degraded isopropanol and the initial amount of isopropanol, such as image 3 As shown, the Cr ion-doped Cr-Mn of the present invention 3 O 4 The thermocatalytic degradation rate of composite thermocatalytic material is higher than that of pur...

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

No PUM Login to View More

Abstract

The invention discloses Cr ion doping Mn 3 O 4 Thermocatalytic material, preparation method and application thereof. Chromium salt or chromium base is added to the aqueous solution of manganese salt, the mixed solution is added to the alkaline solution, ultrasonicated, centrifuged, dried and cooled to obtain a precursor, and the precursor is ground and then calcined at high temperature to obtain Cr-Mn 3 O 4 . Cr ion-doped Mn prepared by the method of the present invention 3 O 4 Thermocatalytic material with improved Mn 3 O 4 Under dark conditions, the defects with low thermal response at low temperature increase the movement of lattice oxygen in the lattice, reduce the initial temperature required for the reaction, and increase the thermal degradation rate, which can effectively improve the thermal catalysis The method has the advantages of low cost, simple method and simple operation. It can degrade organic pollutants by heating under dark conditions.

Description

technical field [0001] The invention relates to a preparation method of a doping material, and the application of thermal catalytic performance under dark conditions in the technical field of degrading volatile organic pollutants, in particular to Cr ion doping of Mn 3 O 4 Thermocatalytic material, preparation method and application thereof. Background technique [0002] With the development of human society, the burning of fossil fuels has caused a series of serious environmental problems, and the acquisition and conversion of solar energy into usable energy has become a key issue for human society. In recent years, photocatalytic degradation of organic pollutants has attracted more and more attention due to its advantages of no pollution and mild reaction conditions. However, due to the influence of the photocatalytic material on its own bandwidth, the larger the bandwidth, the smaller the photoresponse range, and the lower the photocatalytic utilization rate. On this b...

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): B01J23/34B01D53/86B01D53/72
CPCB01J23/34B01D53/8668
Inventor 范晓星杨媛成祥祥
Owner LIAONING UNIVERSITY
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