Published May 2001 | Version v1
Journal article Metadata-only

Iron Species Present in Fe/ZSM-5 Catalysts - Influence of the Preparation Method

Creators

  • 1. Federal University of Sao Carlos, Department of Chemical Engineering (Brazil)
  • 2. Brazilian Center for Research in Physics (Brazil)

Description

The Fe species present in Fe/ZSM-5 catalysts prepared by ionic exchange in aqueous solution or in the solid state are investigated. The samples were characterized by XRD, EPR, Moessbauer Spectroscopy (MOS-S) and chemical analysis. XRD showed that the peak intensity decreased with the increase in Fe content in the samples. EPR and MOS-S showed that the Fe atoms in all the activated samples appear as Fe+3, independently of the method used in the catalyst preparation. The MOS-S data also showed that Fe/ZSM-5, prepared by ion exchange in the solid state presented lower hematite content and more Fe species in charge-compensation sites, the responsible for the catalytic activity, as confirmed by the behavior in the propane oxidation

Additional details

Identifiers

DOI
10.1023/A:1013873021497;

Publishing Information

Journal Title
Hyperfine Interactions
Journal Volume
134
Journal Issue
1
Journal Page Range
p. 161-166
ISSN
0304-3843
CODEN
HYINDN

Conference

Title
7. international Latin American conference on the applications of the Moessbauer effect
Acronym
LACAME 2000
Dates
12-17 Nov 2000
Place
Caracas (Venezuela, Bolivarian Republic of)

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40085575
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
AQUEOUS SOLUTIONS; CATALYSTS; ELECTRON SPIN RESONANCE; HEMATITE; ION EXCHANGE; IRON; IRON IONS; MOESSBAUER EFFECT; OXIDATION; PROPANE; SILICON OXIDES; SOLIDS; X-RAY DIFFRACTION
Descriptors DEC
ALKANES; CHALCOGENIDES; CHARGED PARTICLES; CHEMICAL REACTIONS; COHERENT SCATTERING; DIFFRACTION; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; HYDROCARBONS; IONS; IRON ORES; MAGNETIC RESONANCE; METALS; MINERALS; MIXTURES; ORES; ORGANIC COMPOUNDS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; RESONANCE; SCATTERING; SILICON COMPOUNDS; SOLUTIONS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2001 Kluwer Academic Publishers