Catalyzed oxidation of alkanes and naphthenes by conjugated polymeric metalloporphyrins

A technology for polymerizing metals and metalloporphyrins, which can be used in chemical instruments and methods, catalytic reactions, organic compounds/hydrides/coordination complex catalysts, etc., and can solve the problem of high cost

Inactive Publication Date: 2016-03-30
HUNAN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these metalloporphyrin catalysts have high catalytic efficiency, they are all dissolved in the reaction solution as homogeneous catalysts. Since metalloporphyrins will be decomposed in the homogeneous catalytic system, they can only be used once, and the cost is 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
  • Catalyzed oxidation of alkanes and naphthenes by conjugated polymeric metalloporphyrins
  • Catalyzed oxidation of alkanes and naphthenes by conjugated polymeric metalloporphyrins

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] With 20mg of the metalloporphyrin polymer with structural formula I structure, R 1 = R 2 = H, M 1 = M 2 =Mn,X 1 =X 2 =Cl, n=1, molecular weight is 115000, specific surface area is 860m 2 / g, was added to 500ml cyclohexane, and 8atm air was introduced. The reactant was stirred at 125° C. for 2 hours, the conversion rate of cyclohexane was 18.1%, and the total yield of cyclohexanol and cyclohexanone in the reaction product was 92%.

Embodiment 2

[0015] With 20mg of the metalloporphyrin polymer with structural formula I structure, R 1 = H, R 2 =CH 3 ,M 1 = M 2 =Fe,X 1 =X 2 =Cl, n=2, molecular weight is 53000, specific surface area is 750m 2 / g, was added to 500ml cyclohexane, and 8atm air was introduced. The reactant was stirred at 100° C. for 4 hours, the conversion rate of cyclohexane was 8.6%, and the total yield of cyclohexanol and cyclohexanone in the reaction product was 94%.

Embodiment 3

[0017] With 20mg of the metalloporphyrin polymer with structural formula I structure, R 1 = R 2 =Cl,M 1 =Mn,M 2 =Fe,X 1 =X 2 =Cl, n=1, molecular weight is 172000, specific surface area is 970m 2 / g, add 500ml of cyclohexane, and introduce l0atm air. The reactant was stirred at 130° C. for 2 hours, the conversion rate of cyclohexane was 21.4%, and the total yield of cyclohexanol and cyclohexanone in the reaction product was 91%.

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
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for catalyzing air or oxygen to oxidize alkane and cycloparaffin by use of conjugated polymetalloporphyrin. Solid polymetalloporphyrin which has high porosity and specific surface area and is formed by coupling and polymerizing conjugated alkynyl is used as a catalyst for catalytic oxidation of hydrocarbon bonds of the alkane and the cycloparaffin under a gentle condition so as to obtain a corresponding oxidation product such as ketonic acid and the like. The amount of the used catalyst is small, and the catalytic effect is good. The catalyst is not dissolved or decomposed in a reaction system and can be recycled for lots of times. The transformation rate of the hydrocarbon bonds in catalytic oxidation is high and good alcohol ketone selectivity is achieved.

Description

technical field [0001] The present invention relates to a method for the selective catalytic air oxidation of alkanes and naphthenes under mild conditions. Background technique [0002] Oxidation of alkanes generally needs to be carried out under high temperature and high pressure conditions, and the selectivity is poor. And because the carbon chain is easily broken, there are many side reactions, and it is easy to be deeply oxidized, the product is difficult to separate, the conversion rate is low, and the yield is not high. Using a suitable catalyst to reduce the reaction temperature and pressure is an effective way to reduce the side reactions of alkane oxidation and improve the conversion and selectivity. Single metal porphyrins and their mixtures with metal salts can effectively catalyze the carbon-hydrogen bonds in alkanes and cycloalkanes, and the selectivity and yield are relatively high. For example, the patent US5077394 discloses the use of polyhalogenated transit...

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): C07C45/33C07C49/403C07C47/55C07C35/08C07C31/125C07C29/50B01J31/22
CPCB01J31/183B01J2231/70B01J2531/025C07C29/50C07C45/33C07C2601/14C07C49/403C07C47/55C07C35/08C07C31/125
Inventor 阳卫军李永进郭灿城
Owner HUNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap