In situ H-1 NMR investigation of hydrogen adsorption on a Cu/MgO catalyst

被引：4

作者：

Chesters, MA ^{[1
]}

Packer, KJ ^{[1
]}

Viner, HE ^{[1
]}

Wright, MAP ^{[1
]}

机构：

[1] UNIV NOTTINGHAM,DEPT CHEM,NOTTINGHAM NG7 2RD,ENGLAND

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 48期

关键词：

D O I：

10.1021/jp9715484

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：

Hydrogen adsorption on a Cu/MgO catalyst is investigated using in situ H-1 NMR. The adsorption is largely homogeneous, demonstrating reasonable agreement with the Langmuir isotherm and only small variations in the frequency shift and spin-lattice relaxation time with increasing coverage. The catalyst is investigated under flowing gas conditions, and the hydrogen/deuterium exchange kinetics are studied. The activation energy for exchange is measured to be 96 kJ mol(-1). The H-1 variable-temperature NMR probe developed here and used for the in situ adsorption isotherm and the flowing gas experiments is also described.

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页码：9995 / 10003

页数：9

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