H-2 NMR INVESTIGATIONS OF ION MOLECULE INTERACTIONS OF AROMATICS INCLUDED IN ZEOLITES

被引：47

作者：

HEPP, MA

RAMAMURTHY, V

CORBIN, DR

DYBOWSKI, C

机构：

[1] UNIV DELAWARE,CTR CATALYT SCI & TECHNOL,NEWARK,DE 19716

[2] DUPONT CO,CENT RES & DEV,WILMINGTON,DE 19880

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1992年 / 96卷 / 06期

关键词：

D O I：

10.1021/j100185a043

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：

The sensitivity of the solid-state deuterium NMR line shape to the motion of the C-D bond is exploited to investigate the state of phenanthrene-d10 in zeolites with various counterions. NMR line-shape analysis and measurement of the relaxation time of the Zeeman order (T1) support the existence of two independent spin reservoirs. Spectral line shapes are decomposed into contributions from each spin reservoir to determine equilibrium constants for ion-phenanthrene association as a function of temperature. DELTA-H for this process decreases with increasing cation radius.

引用

页码：2629 / 2632

页数：4

共 51 条

[1]

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