以水为原料的过氧化氢原位制备方法

In-situ Preparation Methods of Hydrogen Peroxide via Water Oxdation

过氧化氢(H_(2)O_(2))是一种重要的化学品,可作为清洁的消毒剂,主要采用蒽醌法集中生产,运输和储存过程存在爆炸风险,因此需要开发原位制备方法。以氧气为原料的电化学还原和光催化还原已被广泛关注,但反应在气液固三相界面进行,设备复杂、产量受限。以水为原料的固液界面氧化过程也是原位产生H_(2)O_(2)的重要途径,本文概述电化学、光催化等氧化水制备H_(2)O_(2)的常见方法,重点介绍热催化、超声压电、等离子体、微液滴等研究近期出现的原位制备过氧化氢新方法,为过氧化氢原位制备,特别是消毒领域的研究者提供参考。

Hydrogen peroxide(H2O2)is an important chemical that may be used as a clean disinfectant.For scale application,H_(2)O_(2) is produced primarily by the anthraquinone process.The necessary transportation and storage processes bring explosion risks,so it is urgent to develop in-situ preparation methods.Electrochemical and photocatalytic reduction of oxygen to product H_(2)O_(2) have received wide attention,but these reactions are carried out at the gas-liquid-solid interface.This three-phase reaction requires complex equipment and sequentially limits large-scale production.Another equally important pathway for in-situ H_(2)O_(2) production is the oxidation of water which needs only solid-liquid two-phase interface.This paper summarizes the common methods of oxidizing water to prepare H_(2)O_(2),such as electrochemistry and photocatalysis,and focuses on the recent new methods of in-situ H_(2)O_(2) preparation,including thermal catalysis,ultrasonic piezoelectricity,plasma and microdroplet method.These methods provide the references for in-situ H2O2 production and in particular its utilization in the field of disinfection.