Fast and Selective Aqueous-Phase Oxidation of Styrene to Acetophenone Using a Mesoporous Janus-Type Palladium Catalyst

Autor:	Majid Vafaeezadeh, Ranja Saynisch, Andrea Lösch, Wolfgang Kleist, Werner R. Thiel
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	mesoporous Janus-type catalyst modified mesoporous silica aqueous-phase oxidation palladium catalyst hydrogen peroxide Organic chemistry QD241-441
Zdroj:	Molecules, Vol 26, Iss 21, p 6450 (2021)
Druh dokumentu:	article
ISSN:	26216450 1420-3049
DOI:	10.3390/molecules26216450
Popis:	A heterogeneous Janus-type palladium interphase catalyst was obtained by selective surface modification of a hollow mesoporous silica material. The catalyst comprises hydrophobic octyl groups on one side of the silica nanosheets and single-site bis-imidazoline dichlorido palladium(II) complexes on the other. The structure of this composite material has been analyzed by means of elemental analysis, atomic absorption spectroscopy, BET surface analysis, TGA, SEM and solid-state CP-MAS 13C and 29Si NMR spectroscopy. The catalyst showed extraordinary activity for the aqueous-phase oxidation of styrene to acetophenone using 30% hydrogen peroxide as the oxidant. An 88% yield of acetophenone could be achieved after 60 min.
Databáze:	Directory of Open Access Journals
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