EXAFS measurement with laboratory equipment: Problems and their countermeasures
作者:
Tokuhiko Okamoto,
Seiichi Yamashita,
Toshio Yamaguchi,
Hisanobu Wakita,
期刊:
X‐Ray Spectrometry
(WILEY Available online 1990)
卷期:
Volume 19,
issue 1
页码: 15-21
ISSN:0049-8246
年代: 1990
DOI:10.1002/xrs.1300190104
出版商: Wiley Subscription Services, Inc., A Wiley Company
数据来源: WILEY
摘要:
AbstractExperimental techniques for eliminating the characteristic x‐rays emitted from impurities in cathode and anode materials in the vicinity of the x‐ray absorption edge were studied with a laboratory EXAFS spectrometer using a rotating anode. Two methods are proposed for this purpose, a current‐control system and a filter method involving the use of a material that selectively absorbs characteristic x‐rays. The former method was applied to the Co, Ni and Zn K absorption spectra and the latter to a Pd K absorption spectrum, and the results were compared with those obtained from conventional measurements. The change in the nearest neighbour structure of Pd in a Pd‐Al2O3catalyst accompanied by oxidation or reduction was clarified by EXAFS and XANES measurements with the use of the filt
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