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Electrocatalysis method for hydrolyzing esters and amide organic compound with high steric hindrance

A technology of catalytic hydrolysis and process method, which is applied in the field of catalytic chemical reaction, can solve the problems of high price, unsuitable for long-term storage, etc., and achieve the effect of low cost

Inactive Publication Date: 2012-01-18
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And expensive, not suitable for long-term storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The hydrolysis reaction was carried out in a 25ml closed container, the system temperature was kept constant at 37°C, and the temperature fluctuation was at 0.01°C. Under the protection of argon, 0.2ml of cedaryl acetate was dissolved in 10ml of ethanol and 10ml of Na 2 SO 4 (0.5M, pH6) in the mixed solution to form a substrate solution. Two platinum wire electrodes were inserted into the substrate solution with a distance of 1 cm between the electrodes and connected to a function signal generator.

[0025] Turn on the function signal generator, adjust the peak voltage to 20V, the waveform is a sine wave, and the frequency is 20Hz. Measure the pH value of the solution every 5 minutes with a pH meter. After 50 minutes, the solution was heated to 70°C and maintained for half an hour, and the pH value was measured again to determine the final value after complete hydrolysis.

[0026] A blank experiment was carried out without applying an electric field or adding cedryl...

Embodiment 2

[0028] The hydrolysis reaction was carried out in a 25ml closed container, the system temperature was kept constant at 37°C, and the temperature fluctuation was at 0.01°C. Under the protection of argon, 0.2ml of linalyl acetate was dissolved in 10ml of ethanol and 10ml of Na 2 SO 4 (0.5M, pH6) in the mixed solution to form a substrate solution. Two platinum wire electrodes were inserted into the substrate solution with a distance of 1 cm between the electrodes and connected to a function signal generator.

[0029] Turn on the function signal generator, adjust the peak voltage to 20V, the waveform is a sine wave, and the frequency is 5Hz. Measure the pH value of the solution every 5 minutes with a pH meter. After 50 minutes, the solution was heated to 70°C and maintained for half an hour, and the pH value was measured again to determine the final value after complete hydrolysis.

[0030] A blank experiment was carried out without applying an electric field or adding linalyl...

Embodiment 3

[0032] The hydrolysis reaction was carried out in a 4ml color dish, the system temperature was kept constant at 37°C, and the temperature fluctuation was at 0.01°C. Under the protection of argon, 3.2ml of Tris buffer solution (0.05M, pH7.6) of N-α-benzoyl-DL-arginine-4-nitroaniline with a concentration of 0.4mg / ml was placed in in a cuvette. Two platinum wire electrodes were inserted into the substrate solution with a distance of 1 cm between the electrodes and connected to a function signal generator. The cuvette was placed in a UV-visible spectrophotometer, and the change of the absorbance of the system was measured at a wavelength of 410nm.

[0033] Turn on the function signal generator, adjust the peak voltage to 20V, the waveform is a sine wave, and the frequency is 80Hz. The rise in absorbance at 410 nm was continuously monitored and recorded with a spectrophotometer. The reaction was stopped after 50 min.

[0034] A blank experiment was carried out without applying an...

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PUM

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Abstract

The invention discloses a catalytic chemistry reaction method which is a technical method employing an alternating electric field to directly catalyze a hydrolysis reaction of ester and amide with high steric hindrance. The technical method is a hydrolysis reaction conducted in an electrolyzer, and a voltage of 20V peak and 1-100 Hz frequency is effected on a hydrolysis system of cedryl acetate, linalyl acetate and N-alpha-benzoyl-DL-arginine-4-nitroaniline. Substrate molecules are polarized in a Helmholtz layer to facilitate fractures of weak bonds, so as to catalyze the hydrolysis reaction without using a catalyst. The method is simply operated, at low costs and without catalyst pollution, and can be used for degradation of organics and pollutants with high steric hindrance.

Description

technical field [0001] The invention relates to a catalytic chemical reaction method. Specifically, it relates to a process method for accelerating the hydrolysis reaction activity of high-steric hindered esters and amides by using an alternating electric field. Background technique [0002] The hydrolysis of esters and amides is generally accelerated by acid-base catalysis and nucleophilic catalysis. This type of catalyst is cheap and easy to use, but its catalytic ability is limited, and the catalyst pollution products are difficult to remove by simple methods. Therefore, it is generally used for primary and secondary esters and amides, as well as reactions that are easier to hydrolyze esters and amides. [0003] For esters and amides with high steric hindrance, such as linalyl acetate, tert-butyl acetate, etc., their hydrolysis reaction is extremely slow, and it is difficult for general catalysts to significantly speed up the reaction rate. Only the use of supernucleoph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/115A62D101/28
Inventor 黄积涛邢达杰黄薇
Owner NANKAI UNIV
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