Ni Lin, Yu Chang, Wei Qianbing, Liu Dongming, Qiu Jieshan
State Key Lab of Fine Chemicals, School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, P.R. China.
State Key Lab of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
Angew Chem Int Ed Engl. 2022 Jul 25;61(30):e202115885. doi: 10.1002/anie.202115885. Epub 2022 Jun 9.
Pickering emulsions are particle-stabilized surfactant-free dispersions composed of two immiscible liquid phases, and emerge as attractive catalysis platform to surpass traditional technique barrier in some cases. In this review, we have comprehensively summarized the development and the catalysis applications of Pickering emulsions since the pioneering work in 2010. The explicit mechanism for Pickering emulsions will be initially discussed and clarified. Then, summarization is given to the design strategy of amphiphilic emulsion catalysts in two categories of intrinsic and extrinsic amphiphilicity. The progress of the unconventional catalytic reactions in Pickering emulsion is further described, especially for the polarity/solubility difference-driven phase segregation, "smart" emulsion reaction system, continuous flow catalysis, and Pickering interfacial biocatalysis. Challenges and future trends for the development of Pickering emulsion catalysis are finally outlined.
皮克林乳液是由两种互不相溶的液相组成的颗粒稳定的无表面活性剂分散体，在某些情况下，它作为一种有吸引力的催化平台出现，以突破传统技术障碍。在这篇综述中，我们全面总结了自2010年开创性工作以来皮克林乳液的发展及其催化应用。将首先讨论并阐明皮克林乳液的明确机制。然后，对两类内禀和外在两亲性的两亲性乳液催化剂的设计策略进行了总结。进一步描述了皮克林乳液中非常规催化反应的进展，特别是极性/溶解度差异驱动的相分离、“智能”乳液反应体系、连续流动催化和皮克林界面生物催化。最后概述了皮克林乳液催化发展面临的挑战和未来趋势。
