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

Sulfydryl-modified silica gel, preparation method, application, and method for detecting alkyl mercury in water

A technology of alkylmercury and silica gel, which is applied in the field of preparation, mercapto-modified silica gel, and detection of alkylmercury in water. It can solve the problems of unsatisfactory adsorption effect and low adsorption efficiency, and achieve enhanced adsorption, increased adsorption rate, and increased capture probability. Effect

Inactive Publication Date: 2019-11-05
广电计量检测(南宁)有限公司 +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the alkylmercury in the water body with a small amount, the adsorption effect of the existing mercapto-modified silica gel is not ideal, and the adsorption efficiency is not high.

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
  • Sulfydryl-modified silica gel, preparation method, application, and method for detecting alkyl mercury in water
  • Sulfydryl-modified silica gel, preparation method, application, and method for detecting alkyl mercury in water
  • Sulfydryl-modified silica gel, preparation method, application, and method for detecting alkyl mercury in water

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0050] The embodiment of the present invention also provides a preparation method of the mercapto-modified silica gel, comprising the following steps:

[0051] S10, the activated silica gel containing hydroxyl and the chemical general formula is NH 2 (CH 2 ) mSiX 3 The silane coupling agent has a bonding reaction, X is a hydrolyzable group, and the first modified silica gel containing the first modification group is obtained, and the structural unit of the first modification group is shown in the general formula (II) ;

[0052]

[0053] S20, making the two hydrogens in the amino group of the structural unit of the first modifying group in the first modified silica gel undergo a 1,2-addition reaction with the acrylate compound to obtain a compound containing the second modifying group The second modified silica gel group, the structural unit of the second modified group is shown in the general formula (III), wherein R1 and R2 are independently selected from alkyl groups o...

Embodiment 1

[0083] (1) Put silica gel with a particle size of 100 mesh in a 250mL three-neck flask, add 150mL of 6.0mol / L hydrochloric acid, heat and reflux at 120°C for 5 hours, filter after cooling, wash the silica gel with distilled water until it is neutral, and dry it in vacuum to obtain Activated silica gel.

[0084] (2) Weigh 30.0g of activated silica gel and place it in a 250mL three-neck flask, add 100mL of toluene (toluene is better if the surface of the silica gel is submerged 5-6cm), and 15.0mL of γ-aminopropyltriethoxysilane, stir and reflux at 70°C After cooling for 6 hours, filter to obtain a solid, wash the solid with toluene and ethanol for 2 to 3 times in sequence, and dry in vacuum at 50° C. for 6 hours to obtain the first modified silica gel.

[0085] (3) Weigh 30.0g of the first modified silica gel, 8mL of methyl acrylate, and 100mL of methanol into a 250mL three-neck flask, heat and stir at 50°C for 24 hours, stop the reaction, let the reaction solution stand, and wa...

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
particle size (mesh)aaaaaaaaaa
Login to View More

Abstract

The invention relates to a sulfydryl-modified silica gel, a preparation method, application, and a method for detecting alkyl mercury in water. The sulfydryl-modified silica gel comprises a silica gelmatrix and a dendritic modification group formed on the surface of the silica gel matrix; the modification group comprises a structural unit shown in a general formula (I) described in the descriptions of the invention. According to the general formula (I), m is selected from integers from 0 to 3; n1 and n2 are each independently selected from integers from 2 to 3; and R1 and R2 are each independently selected from an alkyl or a substituted alkyl which has 1 to 2 carbon atoms or hydrogen atoms.

Description

technical field [0001] The invention relates to the field of organometallic pollution, in particular to a mercapto-modified silica gel, a preparation method and application, and a method for detecting alkylmercury in water. Background technique [0002] Alkylmercury, including methylmercury and ethylmercury, is a class of highly toxic and carcinogenic organometallic compounds. These compounds are highly fat-soluble and tend to remain in the adipose tissue of organisms in natural water bodies. It is enriched in the food chain of water bodies, and then causes serious harm to humans and animals living in aquatic ecosystems and wetland ecosystems. It is an environmental pollutant with serious biological toxicity. [0003] Among alkylmercury, methylmercury is the most toxic, and any form of mercury in the environment (metallic mercury, inorganic divalent mercury, and alkylmercury, etc.) can be converted into highly toxic methylmercury under certain conditions, that is, mercury M...

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): G01N30/02G01N30/06G01N30/40
CPCG01N30/02G01N30/06G01N30/40G01N2030/062G01N2030/402
Inventor 韦革李菲萍农汉榜李倩王俊
Owner 广电计量检测(南宁)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