Published February 1988 | Version v1
Journal article Metadata-only

Moessbauer and magnetic characterization of subdomain Fe0 clusters on surface modified carbons

Creators

  • 1. Pennsylvania State Univ., University Park (USA)

Description

Highly dispersed Fe-species supported on high surface area carbons treated with NaOH and HNO3 were investigated by Moessbauer spectroscopy and magnetization measurements. The superparamagnetic Fe0 clusters formed on the NaOH-treated carbons showed an average particle radius of 2.0 nm, a blocking temperature lower than 88 K and significant metal-support interaction. On exposure to syngas (H2+CO) the Moessbauer spectrum revealed the presence of Haegg Carbide (Fe5C2), believed to be the active component of Fischer-Tropsch reaction. (orig.)

Additional details

Publishing Information

Journal Title
Hyperfine Interact.
Journal Volume
41
Journal Issue
1-4
Series
Hyperfine Interact.
Journal Page Range
673-676
ISSN
0304-3843
CODEN
HYIND

Conference

Title
International conference on the applications of the Moessbauer effect (ICAME '87).
Dates
17-21 Aug 1987.
Place
Melbourne (Australia).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Switzerland
INIS RN
19070139
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
CARBON; DISPERSIONS; EXPERIMENTAL DATA; GRAPHITE; IRON; LOW TEMPERATURE; MAGNETIZATION; MEDIUM TEMPERATURE; MOESSBAUER EFFECT; SODIUM HYDROXIDES; SOLID CLUSTERS; SUPERPARAMAGNETISM; SURFACES; TEMPERATURE DEPENDENCE
Descriptors DEC
ALKALI METAL COMPOUNDS; DATA; ELEMENTS; HYDROGEN COMPOUNDS; HYDROXIDES; INFORMATION; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; MAGNETISM; METALS; NONMETALS; NUMERICAL DATA; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SODIUM COMPOUNDS; TRANSITION ELEMENTS