Pickering乳滴固定床催化研究进展  

Research progress in catalysis in Pickering emulsion droplet-based fixed-bed reactor

作　　者：张明 李婷 杨箭琴 杨恒权[1] Ming Zhang;Ting Li;Jianqin Yang;Hengquan Yang(School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,China)

机构地区：[1]山西大学化学化工学院,太原030006

出　　处：《中国科学：化学》2023年第7期1113-1124,共12页SCIENTIA SINICA Chimica

基　　金：国家重点研发计划(编号:2021YFC2101900);国家自然科学基金(编号:21902093,21925203)资助项目。

摘　　要：工业上精细化学品合成中液-液、气-液两相催化体系长期存在效率低的问题,不得不在间歇反应釜中进行.Pickering乳液具有大的反应界面和易于调控的微纳界面/空间,能够显著提升两相反应的催化效率,更重要的是Pickering乳液具有极高的稳定性,使其能够像传统固体颗粒催化剂一样填充到固定床反应器中,实现液-液、气-液两相催化反应的连续运行,显著提高酶催化、化学催化反应效率,推动两相催化体系向应用水平发展.本文系统概述了Pickering乳滴固定床的构建以及催化理论模型,介绍了其应用研究的最新进展,并对其未来的研究方向和发展趋势进行了展望.The liquid-liquid and gas-liquid biphasic catalytic systems in the synthesis of industrial fine chemicals often suffer from low catalysis efficiency,which has to be implemented in batch reactors.Pickering emulsions possess abundant reaction interfaces and their micro-/nano-interfaces or spaces are easy to be regulated,which helps to significantly enhance the catalytic efficiency of biphasic reactions.More importantly,due to the high stability of Pickering emulsions,such droplets can be packed in a column reactor like particulate catalysts in conventional fixed-bed reactors,achieving continuous operation of liquid-liquid or gas-liquid biphasic catalytic reactions.Impressively,this system not only significantly enhances the catalysis efficiency in enzymatic or chemical catalysis,but also promotes the development of biphasic catalytic system towards the level of practical applications.This article reviews the construction of Pickering emulsion droplet-based fixed-bed reactor,the theoretical model in catalysis,the recent progress in their application,and finally discusses the future research directions and development trends.

关 键 词：两相催化 Pickering乳液 固定床反应器 微纳界面 微纳空间 

分 类 号：O643.36[理学—物理化学] O648.23[理学—化学]