ELECTRON-PARAMAGNETIC-RESONANCE SPECTROSCOPY OF CATALYTIC SURFACES

被引：13

作者：

HOWE, RF

机构：

[1] Department of Physical Chemistry, University of New South Wales, Kensington, NSW 2033

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1993年 / 72卷

关键词：

CATALYTIC SURFACES; ELECTRON PARAMAGNETIC RESONANCE; MOLYBDENUM(V);

D O I：

10.1016/0927-7757(93)80485-W

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：

A review is presented of the application of electron paramagnetic resonance (EPR) spectroscopy to study surfaces of catalytic interest. Spectra of Mo(V) in supported molybdena catalysts illustrate how EPR can assist in the characterization of such materials. The spectra of an adsorbed stable radical, the superoxide ion, are used to show how surface sites on catalysts can be probed by EPR. Unstable radicals which are conceivable intermediates in catalytic reaction mechanisms can be identified via spin trapping experiments, either chemical or matrix isolation. The mobility of adsorbed radicals on surfaces can be studied by EPR. Finally, recent progress in observing EPR spectra from well-defined single-crystal surfaces is discussed.

引用

页码：353 / 363

页数：11

共 43 条

[1]

ABDO S, 1976, J PHYS CHEM-US, V80, P2431, DOI 10.1021/j100562a022

[2] INTERACTION OF HCL AND HBR WITH A MOLYBDENA-ALUMINA CATALYST [J].