Unlock instant, AI-driven research and patent intelligence for your innovation.

Method of generating hydroxyl free radical

A free radical and hydroxyl technology, applied in the field of photochemistry, to achieve the effects of rapid recovery, waste reduction and cost reduction

Inactive Publication Date: 2008-11-19
WUHAN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems existing in the processing time, efficiency and cost in the prior art of generating hydroxyl radicals, and provides a method of utilizing the photochemical activation of clay minerals to make the clay minerals produce hydroxyl radicals under the action of light. method, which has the advantages of low cost, easy operation, simple process flow and no secondary pollution

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
  • Method of generating hydroxyl free radical

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: The reaction was carried out in a one-liter beaker equipped with a stirrer, wherein a 250 W metal halide lamp with a wavelength of 365 nm or more was immersed in the beaker in a glass sleeve. Tap water was continuously passed through the glass jacket to cool it. The total volume of the reaction suspension is about 400 ml. The suspension was prepared by stirring 400 ml of saturated aqueous solution of benzene and 6 g of montmorillonite, and adjusting the pH value to 5 with hydrochloric acid. The saturated aqueous solution of benzene was used to capture hydroxyl radicals by benzene. Stirring was performed with a magnetic stirrer and irradiation was continued for 6 hours. Samples were taken at 1, 2, 3, 4, 5, and 6 hours, and the phenol in the samples was analyzed by high performance liquid chromatography. The amount of phenol generated (that is, the amount used to represent hydroxyl radicals) is shown in the accompanying drawing. The generation of hydroxyl ra...

Embodiment 2

[0018] Example 2: The reaction was carried out in a one-liter beaker equipped with a stirrer, wherein a 250 W high-pressure mercury lamp with a wavelength of 365 nm or more was immersed in the beaker in a glass sleeve. Tap water was continuously passed through the glass jacket to cool it. The total volume of the reaction suspension is about 400 ml. The suspension was prepared by stirring a saturated aqueous solution of 400 ml of benzene and 8 g of kaolin, and adjusting the pH value to 7 with sodium hydroxide. Stirring was performed with a magnetic stirrer and irradiation was continued for 6 hours. Samples were taken at 1, 2, 3, 4, 5, and 6 hours, and the phenol in the samples was analyzed by high performance liquid chromatography. The amount of phenol generated (that is, the amount used to represent hydroxyl radicals) is shown in the accompanying drawing. The production of hydroxyl radicals was 1.91~4.51μmol / L.

Embodiment 3

[0019] Example 3: The reaction was carried out in a one-liter beaker equipped with a stirrer, wherein a 250-watt metal halide lamp with a wavelength of ≥ 365 nm was immersed in the beaker in a glass sleeve. Tap water was continuously passed through the glass jacket to cool it. The total volume of the reaction suspension is about 400 ml. The suspension was prepared by stirring a saturated aqueous solution of 400 ml of benzene and 8 g of montmorillonite, and adjusting the pH value to 2 with hydrochloric acid. Stirring was performed with a magnetic stirrer and irradiation was continued for 6 hours. Samples were taken at 1, 2, 3, 4, 5, and 6 hours, and the phenol in the samples was analyzed by high performance liquid chromatography. The amount of phenol generated (that is, the amount used to represent hydroxyl radicals) is shown in the accompanying drawing. The amount of hydroxyl radicals produced was 49.68~94.32μmol / L. It can be seen from the attached curve that the concentra...

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
wavelengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a manufacturing method of hydroxyl free group, which comprises the following steps: putting 10-25g / L clay mineral kaolin or montmorillonite in the water solution; stirring evenly to prepare suspension; placing water compound under ray to radiate; reacting the compound with water to produce hydroxyl free group.

Description

technical field [0001] The invention relates to a method for utilizing the photochemical activation of clay minerals to make the clay minerals produce hydroxyl radicals under the action of light, and belongs to the technical field of photochemistry. Background technique [0002] Hydroxyl radical (OH) is a very active oxidizing radical, its standard electrode potential (2.80V) is second only to fluorine (2.87V); the rate constant of reaction with organic matter is large, generally at 10 6 ~1010mol -1 ls -1 ; Non-selective, almost all organic matter can be oxidized; short life, in different environmental media, its existence time has a certain difference, generally less than 10 -4 s; The use of hydroxyl radicals to treat organic matter has the characteristics of high treatment efficiency and no secondary pollution. These advanced oxidation characteristics of hydroxyl radicals enable it to be used in advanced sewage treatment and other aspects, and it is a green medicament f...

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): C07B61/02C07C37/58C07C39/04C07B60/00
Inventor 吴峰李静邓南圣
Owner WUHAN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com