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Unprecedented Shape Selectivity in Hydrogenation of Triacylglycerol Molecules with Pt/ZSM‐5 Zeolite
Author(s) -
Philippaerts An,
Paulussen Sabine,
Breesch Annika,
Turner Stuart,
Lebedev Oleg I.,
Van Tendeloo Gustaaf,
Sels Bert,
Jacobs Pierre
Publication year - 2011
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.201007513
Subject(s) - zeolite , adsorption , selectivity , chemistry , fatty acid , molecule , platinum , organic chemistry , catalysis , stereochemistry
Well tuned : ZSM‐5 with platinum nanoparticles preferably hydrogenates trans fatty acids over cis isomers in model triacylglycerols for geometric reasons. The central fatty acid chain reacts faster, pointing to pore mouth adsorption in a tuning fork conformation (see picture). This conformation induces stepwise hydrogenation, resulting in fast removal of the unstable central triene, while formation of saturated chains is limited.