Study of the Influence of Water on Oxidative Properties of Fe3+ in ZSM-5 Zeolite Channels

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Title:Study of the Influence of Water on Oxidative Properties of Fe3+ in ZSM-5 Zeolite Channels
Creators:
Čík, Gabriel
Hubinová, Milada
Šeršeň, František
Brezová, Vlasta
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 67, 12, pp. 1743-1759
Uncontrolled Keywords:Cation-radicals, Phenol, Molecular sieves, Aluminosilicates, Transition metals, Thiophene, Heterogeneous catalysis, Oxidation, Zeolites

Abstract

The interactions of phenol and thiophene with Fe<sup>3+</sup> ions have been studied in ZSM-5 zeolite channels in the presence of water. The Fe-ZSM-5 was prepared by the ion exchange of Fe<sup>3+</sup> for Na<sup>+</sup>. The Fe<sup>3+</sup> ions in zeolite channels have unsaturated co-ordination spheres and oxidize organic substrates (phenol, thiophene) at room temperature. The interaction of Fe<sup>3+</sup> with phenol gives rise to the stabilized cation-radical PhOH<sup>•+</sup> and thiophene forms low oligomers (2-6 monomeric units). The oligomers are present in the neutral as well as oxidized form as cation-radicals (polarons). The formation of dications (bipolarons) has not been observed. <p>

Title:Study of the Influence of Water on Oxidative Properties of Fe3+ in ZSM-5 Zeolite Channels
Creators:
Čík, Gabriel
Hubinová, Milada
Šeršeň, František
Brezová, Vlasta
Uncontrolled Keywords:Cation-radicals, Phenol, Molecular sieves, Aluminosilicates, Transition metals, Thiophene, Heterogeneous catalysis, Oxidation, Zeolites
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:67
Number:12
Page Range:pp. 1743-1759
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20021743UNSPECIFIED
ID Code:2031
Item Type:Article
Deposited On:06 Feb 2009 17:15
Last Modified:06 Feb 2009 16:15

Citation

Čík, Gabriel; Hubinová, Milada; Šeršeň, František; Brezová, Vlasta (2002) Study of the Influence of Water on Oxidative Properties of Fe3+ in ZSM-5 Zeolite Channels. Collection of Czechoslovak Chemical Communications, 67 (12). pp. 1743-1759. ISSN 0010-0765

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