Oil foams stabilized by POSS/organosilica particle assemblies: application for aerobic oxidation of aromatic alcohols

Zhang, Shi, Dedovets, Dmytro and Pera Titus, Marc 2022. Oil foams stabilized by POSS/organosilica particle assemblies: application for aerobic oxidation of aromatic alcohols. Journal of Materials Chemistry A: materials for energy and sustainability 10 (18) , pp. 9997-10003. 10.1039/D2TA00667G

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Abstract

A novel amphiphilic polyhedral oligomeric silsesquioxane (POSS) with surfactant-like behavior was synthesized. By combining this new POSS, used as a frother, with surface-active catalytic organosilica particles, used as a stabilizer, we designed a dual particle system able to generate foams in pure organic solvents. Tunable foamability and foam stability were achieved in a variety of organic solvents by simply adjusting the POSS concentration. As a result, the catalytic activity was drastically boosted in the aerobic oxidation of pure aromatic alcohols under 1 bar O2 pressure. Particles were conveniently recycled with high foamability and the catalytic efficiency was maintained for at least 7 consecutive runs.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Additional Information:	This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence
Publisher:	Royal Society of Chemistry
ISSN:	2050-7488
Funders:	ERC grant Michelangelo (ref. 771586)
Date of First Compliant Deposit:	27 June 2022
Date of Acceptance:	17 March 2022
Last Modified:	23 May 2023 13:44
URI:	https://orca.cardiff.ac.uk/id/eprint/150813

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