Bipolar membrane electrolysis method for ester-type hydrolysis

An electrolysis method and bipolar membrane technology, applied in the electrolysis process, electrolysis components, electrolysis organic production and other directions, can solve the problems of high equipment and safety requirements, harsh process conditions, etc., to simplify the production process, the process is green and environmental protection, reduce Effects of Acid and Base Consumption

Active Publication Date: 2010-08-25
淮安芯存集成电路有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In this paper, water ionization is used as a catalyst without any pollution to the environment, so it is a promising green process; however, the proce

Method used

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  • Bipolar membrane electrolysis method for ester-type hydrolysis
  • Bipolar membrane electrolysis method for ester-type hydrolysis

Examples

Experimental program
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Example Embodiment

Example 1

The present invention is applied to the production of vitamin C, and its hydrolysis device includes an anode plate 1, a cathode plate 2 and 50 bipolar membranes 3 between the cathode and anode plates, and the hydrolysis device has 49 hydrolysis chambers. First, water is pumped into the anode chamber 4 and the cathode chamber 6, and methyl guronate solution is pumped into the hydrolysis chamber 5 for circulation. After the circulation is stable, a DC power supply is connected between the two electrode plates, and a voltage of about 130V is applied. At this time, in the anode chamber, water is ionized into hydrogen ions and hydroxide ions in the bipolar membrane under the action of the electric field, and the hydroxide ions move to the anode under the action of the electric field, and enter the anode chamber through the negative film layer of the bipolar membrane , discharged with the anolyte circulation; at the same time, hydrogen ions enter the hydrolysis chamber thr...

Example Embodiment

Example 2

The difference between this embodiment and Embodiment 1 is that the solution pumped into the hydrolysis chamber is methyl formate, and methyl formate is hydrolyzed under the action of hydrogen ions and hydroxide ions to generate formic acid and methanol.

Example Embodiment

Example 3

The difference between this embodiment and Embodiment 1 is that the solution pumped into the hydrolysis chamber is methyl formate, and methyl formate is hydrolyzed under the action of hydrogen ions and hydroxide ions to generate formic acid and methanol.

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Abstract

The invention discloses a bipolar membrane electrolysis method for ester-type hydrolysis. The method is based on a bipolar membrane electrolysis technique and adopts bipolar membrane and electrodes to form a hydrolysis device in order to promote the hydrolysis of esters. The method comprises the following specific steps: a, pumping electrolyte into an anode chamber and a cathode chamber respectively, pumping ester-type solution into a hydrolysis chamber and performing circulation; b, applying a DC power source between an anode and a cathode to electrolyze water; and c, moving hydrolysis products out from the device in time to perform separation and obtain acid and alcohol. The method utilizes bipolar membrane ionization water to catalyze the hydrolysis of esters in order to directly obtain clean acid and alcohol products, and has the advantages of no need for any catalysts, high material utilization rate, no pollutant emission, capability of being operated at normal temperature under normal pressure, simple process flow, high volume utilization rate of equipment, safety and energy conservation.

Description

A bipolar membrane electrolysis method for ester hydrolysis technical field The invention belongs to the field of chemical production in chemical industry, and in particular relates to a method for hydrolyzing esters. Background technique The hydrolysis of esters is an important chemical reaction, which is widely used in petrochemical, pharmaceutical, chemical fiber, pesticide and many other industries. At present, the hydrolysis of esters is mostly carried out by catalysts, and commonly used catalysts include alkalis, amines, salts, enzymes, acids, etc. Processes such as regeneration of catalysts bring a lot of inconvenience to production, such as equipment corrosion, complicated processes, and a large amount of waste generation, which do not meet the requirements of clean production and circular economy. For example, the production process of vitamin C is to react gulong acid with methanol to form methyl guronate, which is then hydrolyzed to form vitamin C and methanol...

Claims

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Application Information

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IPC IPC(8): C25B3/00C25B1/04
CPCY02E60/366Y02E60/36
Inventor 李文曦刘洪泉户其皋赵永强檀文礼
Owner 淮安芯存集成电路有限公司
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