Multiphase Microreactors Based on Liquid–Liquid and Gas–Liquid Dispersions Stabilized by Colloidal Catalytic Particles

• Published in: Angewandte Chemie International Edition Vol. 61; no. 4; pp. e202107537 - n/a
• Main Authors: Dedovets, Dmytro, Li, Qingyuan, Leclercq, Loïc, Nardello‐Rataj, Veronique, Leng, Jacques, Zhao, Shuangliang, Pera‐Titus, Marc
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 21.01.2022; Wiley-VCH Verlag; John Wiley and Sons Inc
• Edition: International ed. in English
• Subjects: Cascade chemical reactions; Cascade flow; Catalysts; Chemical Physics; Computer applications; Condensed Matter; Continuous flow; Dispersions; Emulsions; Foams; interfacial catalysis; Materials Science; Microreactors; Multiphase; multiphase reactions; Physics; Reagents; Reengineering; Review; Reviews; Soft Condensed Matter; Sustainability; sustainable chemistry; sustainable chemistry; dispersions; interfacial catalysis; microreactors; multiphase reactions; sustainablechemistry
• ISSN: 1433-7851; 1521-3773; 1521-3773
• DOI: 10.1002/anie.202107537

Pickering emulsions, foams, bubbles, and marbles are dispersions of two immiscible liquids or of a liquid and a gas stabilized by surface‐active colloidal particles. These systems can be used for engineering liquid–liquid–solid and gas–liquid–solid microreactors for multiphase reactions. They constitute original platforms for reengineering multiphase reactors towards a higher degree of sustainability. This Review provides a systematic overview on the recent progress of liquid–liquid and gas–liquid dispersions stabilized by solid particles as microreactors for engineering eco‐efficient reactions, with emphasis on biobased reagents. Physicochemical driving parameters, challenges, and strategies to (de)stabilize dispersions for product recovery/catalyst recycling are discussed. Advanced concepts such as cascade and continuous flow reactions, compartmentalization of incompatible reagents, and multiscale computational methods for accelerating particle discovery are also addressed. This Review summarizes recent progress in liquid–liquid and gas–liquid dispersions stabilized by solid surface‐active colloidal particles (emulsions, foams, bubbles, marbles, bijels) as microreactors. These new systems constitute original platforms for reengineering multiphase reactors towards a higher degree of sustainability.