Observation of Parahydrogen-Induced Polarization in Heterogeneous Hydrogenation on Supported Metal Catalysts

Contrary to popular opinion, two H atoms from the same H2 molecule can end up in the same product molecule and retain their spin correlation during heterogeneous hydrogenation on supported metal catalysts and thus produce parahydrogen‐induced nuclear spin polarization in the reaction products (see p...

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Bibliographic Details
Published in:Angewandte Chemie (International ed.) 2008-02, Vol.47 (8), p.1492-1495
Main Authors: Kovtunov, Kirill V, Beck, Irene E, Bukhtiyarov, Valery I, Koptyug, Igor V
Format: Article
Language:English
Subjects:
heterogeneous catalysis
hydrogenation
NMR spectroscopy
parahydrogen-induced polarization
supported catalysts
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Summary:Contrary to popular opinion, two H atoms from the same H2 molecule can end up in the same product molecule and retain their spin correlation during heterogeneous hydrogenation on supported metal catalysts and thus produce parahydrogen‐induced nuclear spin polarization in the reaction products (see picture). For 0.6‐nm Pt clusters on alumina, the contribution of the pairwise addition route in the hydrogenation of propylene amounts to at least 3 %.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200704881