Published February 1994 | Version v1
Journal article Metadata-only

Europium-151 Moessbauer spectroscopic and XANES investigation of europium-exchanged Y-zeolite

Creators

  • 1. School of Chemistry, Univ. of Birmingham (United Kingdom)
  • 2. Unilever Research, Port Sunlight Lab., Bebington, Merseyside (United Kingdom)

Description

Eu3+ in ca. 10 wt% europium-exchanged Y-zeolite is partially reduced by treatment in hydrogen at 600 C to Eu2+. The reduction of Eu3+ is more readily achieved in Y-zeolite than in europium(III) oxide. The discrepancy in the extent of reduction as revealed by 151Eu Moessbauer spectroscopy and near edge X-ray absorption fine structure (XANES) is associated with any difference in the recoil free fractions of Eu2+ and Eu3+ which may exist at 298 K and the enhanced sensitivity of the XANES to changes in the europium oxidation state. (orig.)

Additional details

Publishing Information

Journal Title
Hyperfine Interactions
Journal Volume
83
Journal Issue
1-4
Journal Page Range
p. 347-350.
ISSN
0304-3843
CODEN
HYINDN

Conference

Title
Latin American conference of the applications of the Moessbauer effect (LACAME).
Dates
5-9 Oct 1992.
Place
Buenos Aires (Argentina).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Switzerland
INIS RN
25066156
Subject category
S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ABSORPTION; ABSORPTION SPECTRA; EUROPIUM IONS; EUROPIUM 151; FINE STRUCTURE; HEAT TREATMENTS; HYDROGEN; MOESSBAUER EFFECT; OXIDATION; RECOILS; SENSITIVITY; SYNCHROTRON RADIATION; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; X-RAY SPECTRA; ZEOLITES
Descriptors DEC
BREMSSTRAHLUNG; CHARGED PARTICLES; CHEMICAL REACTIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; EUROPIUM ISOTOPES; INORGANIC ION EXCHANGERS; INTERMEDIATE MASS NUCLEI; ION EXCHANGE MATERIALS; IONS; ISOTOPES; MATERIALS; MINERALS; NONMETALS; NUCLEI; ODD-EVEN NUCLEI; RADIATIONS; RARE EARTH NUCLEI; SILICATE MINERALS; SORPTION; SPECTRA; STABLE ISOTOPES; TEMPERATURE RANGE