Journal
ADVANCED MATERIALS INTERFACES
Volume 9, Issue 19, Pages -Publisher
WILEY
DOI: 10.1002/admi.202200380
Keywords
Aquivion (TM); cascade reactions; catalysis; foams; perfluorosulfonic acid
Funding
- ERC grant Michelangelo [771586]
- European Research Council (ERC) [771586] Funding Source: European Research Council (ERC)
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This study unravels the foaming properties of Aquivion(TM) PFSA resin and designs a catalytic foam system for efficient conversion reactions. The foam system shows a significant increase in interfacial area and preferential location of catalytic acid centers, leading to enhanced reaction efficiency.
Foams are attractive platforms for engineering gas-liquid-solid catalytic microreactors with enhanced triphasic contact. In this study, the foaming properties of surface-active Aquivion (TM) perfluorosulfonic acid resin (Aquivion (TM) PFSA) are unraveled. Stable aqueous and non-aqueous foams are prepared driven by hydrogen bond interactions between Aquivion (TM) PFSA and protic solvents (e.g., benzyl alcohol, aniline, water). In light of these unique properties, a catalytic foam system for one-pot cascade deacetalization-hydrogenation reactions is designed. As proof of concept, benzaldehyde dimethyl acetal is converted into benzyl alcohol with 84% overall yield at room temperature in a foam system in the presence of Aquivion (TM) PFSA and Pd/SiO2 catalysts, whereas the yield is halved in a non-foam system. The enhanced reaction efficiency is attributed to a marked increase in interfacial area of the foam system and preferential location of catalytic acid centers at the gas-liquid interface.
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