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

A kind of technique of cyclohexene oxidation

A cyclohexene and process technology, applied in the field of adipaldehyde preparation process, can solve the problems of high price, excessive oxidation, hindering industrial application, etc., and achieve the effect of improving product selectivity, high product selectivity, and strengthening material transfer

Active Publication Date: 2021-06-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, in the preparation of adipaldehyde by cyclohexene oxidation, metal complexes-NaIO 4 Catalytic system, catalyst preparation method is complex and expensive
When using high-concentration hydrogen peroxide as an oxidant to oxidize cyclohexene, there is a problem of over-oxidation, and it is difficult to obtain high adipaldehyde selectivity, which hinders the further industrial application of this process

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
  • A kind of technique of cyclohexene oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Cyclohexene is oxidized to adipaldehyde in the microchannel reactor of embodiment 1

[0047] 50 g of cyclohexene and 116 g of acetone were mixed to prepare a cyclohexene solution with a mass concentration of 30%, and 7.89 g of vanadyl acetylacetonate was added to the cyclohexene solution, and the mixed solution was obtained after ultrasonic vibration and uniform mixing;

[0048]A pump is used to inject the mixed solution into the microchannel reactor, and the flow rate of the mixed solution is 10g / min. At the same time, the mixed gas is injected into the microchannel reactor through a mass flow meter, and the flow rate of the mixed gas is controlled to be 15.1L / min. Composed of ozone, the ozone concentration is 100mg / L;

[0049] The reaction temperature in the microchannel reactor was 10° C., the reaction pressure was 0.10 MPa, and the materials were collected after 10 minutes of reaction, and analyzed by gas chromatography.

[0050] Cyclohexene is oxidized to adipalde...

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 application discloses a process for oxidizing cyclohexene. The process includes: reacting a mixed solution containing cyclohexene and a transition metal complex catalyst with a mixed gas containing ozone in a microchannel reactor to prepare adipaldehyde . The method adopts the combination of transition metal complex catalyst and ozone oxidizer, realizes the selective oxidation of cyclohexene to adipaldehyde, overcomes the shortcomings of using noble metal complexes and sodium periodate in the oxidation reaction of cyclohexene, and adopts The microchannel reactor utilizes the efficient mass transfer and heat transfer efficiency in the microreactor to effectively strengthen the material transfer between the two-phase materials, and the product selectivity can reach 91.2%.

Description

technical field [0001] The application relates to a process for preparing adipaldehyde based on a microchannel reactor, which belongs to the field of chemistry and chemical engineering. Background technique [0002] 1,6-Adipaldehyde is an important fine chemical product. It is a quick-acting and broad-spectrum chemical sterilizer. It can not only kill most bacteria, bacterial propagules, fungi, spores and viruses quickly and efficiently, but also does not Corrosion of metal instruments and glass and plastic products, because it is harmless to the human body, it can be widely used in the disinfection and sterilization of medical equipment, food utensils, etc. Use sodium periodate / silica gel system to oxidize cyclohexene to prepare trans-1,2-cyclohexanediol, which can prepare 1,6-hexanedial with high selectivity (Perfume, Flavor and Cosmetics, 2006(6):17-20 ). However, although periodate is effective, it has the disadvantages of being expensive, difficult to handle and store...

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): C07C45/34C07C47/12B01J19/00B01J31/22
CPCB01J19/0093B01J31/2234B01J2231/70B01J2531/46B01J2531/56B01J2531/64C07C45/34C07C47/12
Inventor 许磊袁扬扬张晓敏陆标赵晓炜
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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