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NMR and Theoretical Study of Acid Sites Formed by Adsorption of SO 3 onto Oxide Surfaces
Author(s) -
Zhang Jinhua,
Nicholas John B.,
Haw James F.
Publication year - 2000
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 - 10.1002/1521-3773(20000915)39:18<3302::aid-anie3302>3.0.co;2-t
Subject(s) - adsorption , cubic zirconia , oxide , sulfate , inorganic chemistry , molecule , hydrogen sulfate , chemistry , brønsted–lowry acid–base theory , silica gel , materials science , chemical engineering , organic chemistry , catalysis , ceramic , ionic liquid , engineering
Brønsted acid sites are created on the surfaces of oxides such as silica gel and zirconia by reaction with SO 3 . This is shown by NMR studies of adsorbed probe molecules and by theoretical calculations. In the case of silica gel, the resulting site is a hydrogen sulfate ester as shown in the figure.