Persistent methylbenzenium ions in protonated zeolites: The required proton affinity of the guest hydrocarbon

被引：51

作者：

Bjorgen, M

Bonino, F

Arstad, B

Kolboe, S

Lillerud, KP

Zecchina, A

Bordiga, S

机构：

[1] Univ Turin, Dipartimento Chim IFM, I-10125 Turin, Italy

[2] Univ Turin, NIS Ctr Excellence, I-10125 Turin, Italy

[3] Univ Oslo, Dept Chem, N-0315 Oslo, Norway

来源：

CHEMPHYSCHEM | 2005年 / 6卷 / 02期

关键词：

carbocations; IR spectroscopy; microporous materials; protonation; zeolites;

D O I：

10.1002/cphc.200400422

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Protonated zeolites Tetramethylbenzene (durene) forms a long-lived mechanistically relevant carbenium ion within the micropores of zeolite H-beta. Fourier transform infrared spectroscopy proved the existence of the cation by an absorption at 1604 cm-1. Also an electronic transition at 26500 cm-1, inherently linked to the tetramethylbenzenium cation, was observed. The cation was remarkably stable in the cavities of the zeolite, even at 400 K. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

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收藏

页码：232 / 235

页数：4

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