Bipolar membrane electrolysis method for ester-type hydrolysis

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...

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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 process conditions are relatively harsh, with a pressure of 15Mpa and a temperature of 152-216°C, which requires high equipment and safety. relatively high

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