Published August 30, 1986 | Version v1
Journal article Metadata-only

A Moessbauer study on remarkable changes in chemical states of iron in silica-supported Pd-Fe bimetallic catalysts by varying Fe contents

Creators

  • 1. Tokyo Univ. (Japan). Dept. of Chemistry
  • 2. Yokohama National Univ. (Japan). Faculty of Engineering
  • 3. Hokkaido Univ., Sapporo (Japan). Research Inst. for Catalysis

Description

Fe-57 Moessbauer spectra of silica-supported Pd-Fe bimetallic catalysts show remarkable changes with varying Fe/Pd atomic ratios. From the spectra the main Fe-component is estimated as highly dispersed Fe in the Fe/Pd range of 0.05-0.3, and α-Fe ensemble and Fe-Pd intermetallics in the Fe/Pd range above 0.3. It is suggested that the chemical state of iron is associated with the catalytic performance in effective CO-H2 conversion to methanol. (author)

Additional details

Publishing Information

Journal Title
J. Radioanal. Nucl. Chem.
Journal Volume
106
Journal Issue
3
Series
J. Radioanal. Nucl. Chem. ;Letters.
Journal Page Range
167-173
ISSN
0236-5731
CODEN
JRNCD

INIS

Country of Publication
Hungary
Country of Input or Organization
Hungary
INIS RN
18034869
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
BIMETALS; CATALYSTS; CHEMICAL COMPOSITION; CHEMICAL STATE; INTERMETALLIC COMPOUNDS; IRON; IRON 57; MOESSBAUER EFFECT; PALLADIUM; QUANTITY RATIO; SILICON OXIDES; SUPPORTS
Descriptors DEC
ALLOYS; CHALCOGENIDES; ELEMENTS; EVEN-ODD NUCLEI; INTERMEDIATE MASS NUCLEI; IRON ISOTOPES; ISOTOPES; MECHANICAL STRUCTURES; METALS; NUCLEI; OXIDES; OXYGEN COMPOUNDS; PLATINUM METALS; SILICON COMPOUNDS; STABLE ISOTOPES; TRANSITION ELEMENTS

Optional Information

Notes
14 refs.