THERMAL EFFECTS IN HIGHLY DISPERSED IRON CATALYSTS

Authors
ALVAREZ AM CAGNOLI MV GALLEGOS NG MARCHETTI SG YERAMIAN AA MERCADER RC
Citation
Am. Alvarez et al., THERMAL EFFECTS IN HIGHLY DISPERSED IRON CATALYSTS, Hyperfine interactions, 83(1-4), 1994, pp. 357-362
Citations number
6
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Physics, Nuclear","Physics, Condensed Matter
Journal title
Hyperfine interactions → ACNP
ISSN journal
03043843
Volume
83
Issue
1-4
Year of publication
1994
Pages
357 - 362
Database
ISI
SICI code
0304-3843(1994)83:1-4<357:TEIHDI>2.0.ZU;2-Z
Abstract
The Mossbauer spectra of three Fe/SiO2 catalysts with 5 wt% iron conte nt show the presence of several Fe species and display different magne tic behaviours when the precursors are subjected to various thermal tr eatments. Based on the Mossbauer parameters and CO chemisorption measu rements, the average crystal sizes of the catalysts are estimated and discussed in connection with the thermal pretreatment severity and mag netic properties of the samples.