Check patentability & draft patents in minutes with Patsnap Eureka AI!

Thioether oxidation method

A thioether oxidation and thioether technology, applied in chemical instruments and methods, organic chemistry, chemical/physical processes, etc., can solve the problems of reducing the production cost of sulfoxide and limiting the application range of peroxide oxidation

Active Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the peroxide oxidation method, it is necessary to effectively control the product selectivity, and the production cost of sulfoxide still has room for further reduction, which limits the application range of the peroxide oxidation method.

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
  • Thioether oxidation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0052] Put 50g of urea in a crucible, cover and seal it, place it in a muffle furnace at 450°C and roast for 8 hours to obtain carbon nitride particles A. The average particle size is 400nm, and carbon nitride particles with a particle size of 20-100nm The weight ratio of carbon nitride to the total weight of carbon nitride is 9%, and the nitrogen content is about 61% by weight.

preparation example 2

[0054] Put 40g of urea in a crucible, cover and seal it, place it in a muffle furnace at 550°C and bake for 5 hours to obtain carbon nitride particles B. The average particle size is 200nm, and carbon nitride particles with a particle size of 20-100nm The weight ratio of carbon nitride to the total weight of carbon nitride is 16%, and the nitrogen content is about 61% by weight.

preparation example 3

[0056] Put 60g of urea in a crucible, cover and seal it, place it in a muffle furnace at 650°C and roast for 2 hours to obtain carbon nitride particles C. The average particle size is 600nm, and carbon nitride particles with a particle size of 20-100nm The proportion of the weight of carbon nitride to the total weight of carbon nitride is 2.5%, and the nitrogen content is about 61% by weight.

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 relates to a thioether oxidation method, which comprises the step that thioether and a peroxide are subjected to a contact reaction in the presence of a catalyst, wherein the catalyst iscarbon nitride. The method not only can obtain higher thioether conversion rate and sulfoxide selectivity, but also can reduce the production cost.

Description

technical field [0001] The present disclosure relates to a thioether oxidation process. Background technique [0002] As a typical representative of sulfoxide substances, dimethyl sulfoxide (DMSO) is a sulfur-containing organic compound, which is a colorless and transparent liquid at room temperature, and has the characteristics of high polarity, high hygroscopicity, flammability and high boiling point aprotic . Dimethyl sulfoxide is soluble in water, ethanol, acetone, ether and chloroform, is a highly polar inert solvent, and is widely used as a solvent and reaction reagent. Moreover, dimethyl sulfoxide has a high selective extraction ability and can be used as an extraction solvent for the separation of alkanes and aromatics. For example: dimethyl sulfoxide can be used for the extraction of aromatics or butadiene. In the polymerization reaction, it is used as a processing solvent and spinning solvent, as a synthetic solvent and spinning solvent of polyurethane, and as a ...

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
IPC IPC(8): C07C317/04C07C317/14C07C315/02B01J27/24
CPCB01J27/24C07C315/02C07C317/04C07C317/14
Inventor 史春风康振辉刘阳黄慧蔺晓玲
Owner CHINA PETROLEUM & CHEM CORP
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