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

A method for catalytically preparing cyanophyll

A technology for catalytic preparation of chlorophyll, applied in the field of catalysis, can solve the problems of low conversion rate, inability to recycle the catalyst, poor selectivity of chlorophyll, etc., and achieve the effect of high conversion rate, good contact and easy recycling

Active Publication Date: 2021-08-10
王强
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects in the prior art that the process is complicated, the conversion rate is low, the selectivity of cyanophyll is poor, and the catalyst cannot be recycled, the present invention discloses a method for preparing cyanophyll by reaction with a magnetic ionic liquid catalyst, which has high catalytic activity, simple process, The advantages of high reaction conversion rate, easy recycling of catalyst and high yield of cyanin

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 method for catalytically preparing cyanophyll

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] (1) Magnetic core ZnFe 2 o 4 preparation of

[0029] 3.0 mmol FeCl 3 ·6H 2 O and 1.5mmol Zn(Ac) 2 2H 2 O was dissolved in 40.0 mL of ethylene glycol solution, then 20.0 mmol of sodium acetate and 6.0 mmol of CTAB were added, and ultrasonic treatment was performed for 30 min at a power of 200 W to fully disperse it to obtain a mixture; then the mixture was placed in a water bath at 220 ° C Under the conditions, react for 24 hours to obtain a suspension, which is naturally cooled to room temperature, centrifuged, washed, and dried to obtain ZnFe 2 o 4 magnetic nanocrystals;

[0030] (2) ZnFe 2 o 4 Surface TiO 2 clad

[0031] 0.1g of ZnFe obtained in step 1) 2 o 4 The magnetic nanocrystals were dispersed in the dispersed phase mixed with 20mL ethylene glycol and 5mL deionized water, then 1.0mL ammonia water was added, and the power was 200W for 30min, and then tetra-titanate was added dropwise under the condition of vigorous stirring. Butyl ester, continue to...

Embodiment 1

[0037] The mixed solution obtained by mixing benzyl alcohol, acetal and water according to the molar ratio of 1:10:30 was stirred at room temperature at a stirring rate of 800r / min for 5min, and then adding 12% of the total mass of the mixed solution was magnetic For the ionic liquid catalyst, continue to stir and react for 60 minutes. After the reaction is completed, let it stand for 30 minutes. The magnetic ionic liquid catalyst in the lower layer is directly recycled without any treatment after being separated by a magnetic field. Complete raw materials; wherein, the ionic liquid Y and ZnFe in the magnetic ionic liquid 2 o 4 @TiO 2 The mass ratio of the carrier is 15wt%.

[0038] After analysis, the conversion rate of benzyl alcohol was 99.7%, and the yield of cyanin was 98.6%.

Embodiment 2

[0040] The mixed solution obtained by mixing benzyl alcohol, acetal and water according to the molar ratio of 1:5:10 was stirred at room temperature at a stirring rate of 500r / min for 8min, and then added magnetic For the ionic liquid catalyst, continue to stir and react for 30 minutes. After the reaction is completed, let it stand for 30 minutes. The magnetic ionic liquid catalyst in the lower layer is directly recycled without any treatment after being separated by a magnetic field. Complete raw materials; wherein, the ionic liquid Y and ZnFe in the magnetic ionic liquid 2 o 4 @TiO 2 The mass ratio of the carrier is 30wt%.

[0041] After analysis, the conversion rate of benzyl alcohol was 97.8%, and the yield of cyanin was 96.5%.

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 discloses a method for catalyzing the preparation of chlorophyll, which is to stir a mixed solution of benzyl alcohol, acetal and water at room temperature for 5-8 minutes, then add a magnetic ionic liquid, and continue to stir and react for 30-60 minutes. Set aside for 30 minutes; the ionic liquid in the lower layer is directly recycled; the mixed solution containing cyanin in the upper layer is further separated and purified to obtain the cyanin product and unreacted raw materials. The invention has the advantages of high catalytic activity, simple process, high reaction conversion rate, high cyanine yield and the like.

Description

technical field [0001] The technical field of catalysis of the present invention specifically relates to a method for preparing cyanin by catalyzing a magnetic ionic liquid. Background technique [0002] Yeocyanin, also known as 1-ethoxy-1-benzyloxyethane, acetaldehyde ethanol benzyl alcohol acetal, is a colorless liquid with a strong and fresh green leaf aroma, with hyacinth and rose-like aroma, mainly used in In soaps, detergents, cosmetics and other daily essences. At present, some foreign companies have applied it to the formulation of bleach and insecticide in the laundry room, making it more widely used. [0003] The traditional synthesis of chlorophyll mainly has the following five kinds: 1) in the presence of acidic catalysts, acetal and benzyl alcohol are used as raw materials for acetal exchange reaction; 2) benzyl alcohol and vinyl ethyl ether are reacted with cobalt salt or ATPB 3) Prepared by reacting 2-benzyloxypropionic acid with ethanol in the presence of 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 Patents(China)
IPC IPC(8): C07C41/50C07C43/303B01J31/02B01J31/38
CPCC07C41/50B01J31/0282B01J31/0285B01J31/0292B01J31/38B01J35/33C07C43/303
Inventor 王强默丽欣
Owner 王强