Speciation of Fe in Fe-modified zeolite catalysts.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F10%3A10218061" target="_blank" >RIV/61989592:15310/10:10218061 - isvavai.cz</a>

Alternative codes found

RIV/61388980:_____/10:00346577 RIV/68081723:_____/10:00346577 RIV/00216275:25310/10:39882006

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Speciation of Fe in Fe-modified zeolite catalysts.

Original language description

Fe-modified zeolites (ferrierite and MFI) were prepared by four impregnation methods followed by calcination and tested as catalysts in oxidative dehydrogenation of ethane by nitrous oxide at 350 degrees C. The Fe cationic and Fe oxidic species were identified by combination of UV-Vis spectroscopy and voltammetry. Monomeric or dimeric Fe ions have only UV absorption bands and some of them evolve voltammetrically identifiable [Fe(OH)(x)]((3-x)+) ions in contact with acetic acid-sodium acetate buffer. Feoxide nanoclusters characterised by UV band at about 28,000 cm(-1) are not detected by voltammetry under chosen conditions because they are situated inside the zeolite channels. Amorphous, nanocrystalline, and crystalline Fe(III) oxides were distinguished sensitively by their specific voltammetric reduction peaks at potentials -0.1 to -0.8 V/SCE in acetate buffer (pH 4.7) and by phase-specific electron pair transitions responsible for Vis absorption band centred at 17,500-21,000 cm(-1).

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CB - Analytical chemistry, separation

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Electroanalytical Chemistry

ISSN

1572-6657

e-ISSN

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Volume of the periodical

647

Issue of the periodical within the volume

1 (2010)

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

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UT code for WoS article

000280863200002

EID of the result in the Scopus database

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