Observation of parahydrogen-induced polarization in heterogeneous hydrogenation on supported metal catalysts

被引：161

作者：

Kovtunov, Kirill V. ^{[1
]}

Beck, Irene E. ^{[2
]}

Bukhtiyarov, Valery I. ^{[2
]}

Koptyug, Igor V. ^{[1
]}

机构：

[1] Int Tomography Ctr, Novosibirsk 630090, Russia

[2] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 08期

关键词：

heterogeneous catalysis; hydrogenation; NMR spectroscopy; parahydrogen-induced polarization; supported catalysts;

D O I：

10.1002/anie.200704881

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Chemical Equation Presented) 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%. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

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页码：1492 / 1495

页数：4

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