ISOMERIZATION OF OLEFIN RADICAL CATIONS IN ZSM-5 ZEOLITES

被引：34

作者：

WERST, DW

TARTAKOVSKY, EE

PIOCOS, EA

TRIFUNAC, AD

机构：

[1] Chemistry Division, Argonne National Laboratory, Argonne

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 40期

关键词：

D O I：

10.1021/j100091a047

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：

Variable-temperature EPR was used to investigate reactions of olefin radical cations generated radiolytically in nonacidic and acidic ZSM-5 zeolites. The olefin radical cations undergo isomerization reactions even at 4 K. Radical cation reactions are presumably driven by the exothermicity of charge transfer, which is not efficiently quenched by the vibrational modes of the zeolite lattice. The observation of H-addition type radicals indicates Bronsted acid-catalyzed rearrangements prior to irradiation on the more acidic zeolites.

引用

页码：10249 / 10257

页数：9

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