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In Situ Magnetic Resonance Investigation of Styrene Oxidation over TS‐1 Zeolites
Author(s) -
Zhuang Jianqin,
Yang Gang,
Ma Ding,
Lan Xijie,
Liu Xiumei,
Han Xiuwen,
Bao Xinhe,
Mueller Ulrich
Publication year - 2004
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200461113
Subject(s) - styrene , phenylacetaldehyde , in situ , electron paramagnetic resonance , copolymer , epoxide , zeolite , styrene oxide , chemistry , brønsted–lowry acid–base theory , materials science , polymer chemistry , catalysis , photochemistry , organic chemistry , polymer , nuclear magnetic resonance , physics
Competing reactions , not consecutive processes, are the oxidation of styrene to styrene epoxide and the formation of phenylacetaldehyde (PADH). In situ NMR and EPR spectroscopic analysis of styrene oxidation on TS‐1 zeolite (see picture) demonstrated that Brønsted acid sites provide the active centers needed to transform an intermediate hemiacetal species into PADH.