On the Nature of Active Sites in Benzene Oxidation to Phenol with N2O over H-ZSM-5 with Low Fe Concentrations.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F02%3A54020093" target="_blank" >RIV/61388955:_____/02:54020093 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

On the Nature of Active Sites in Benzene Oxidation to Phenol with N2O over H-ZSM-5 with Low Fe Concentrations.

Original language description

Selective oxidation of benzene with N2O to phenol was investigated at 350 and 450 .DEG.C on H-ZSM-5 zeolites with different Si/Al composition, concentrations of iron ranging from 30 to 2000 ppm, and with gallium (2000 ppm). Zeolites dehydrated at 480 .DEG.C, dehydroxylated at 720 .DEG.C and steamed in the temperature range from 500 to 780 .DEG.C as well as those exchanged by NaCl and treated in NaOH solution were used. IR spectra of OH groups and of adsorbed d3-acetonitrile on zeolites were employed todetermine concentration of Broensted and Al-Lewis sites. ESR spectra of Fe(III) ions and IR spectra of perturbed framework T-O-T bonds due to the presence of Fe(II) ions in cationic sites of the reduced zeolites were applied to characterize location of Fe ions in zeolites. It has been shown that the rate of phenol formation correlates with the concentration of Fe in the zeolite, but is not affected by the presence of gallium.

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

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

<a href="/en/project/IAA4040007" target="_blank" >IAA4040007: Selective oxidation of hydrocarbons catalysed by Me-O/zeolite systems</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2002

Confidentiality

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

Name of the periodical

Journal of Catalysis

ISSN

0021-9517

e-ISSN

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Volume of the periodical

211

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

109-118

UT code for WoS article

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EID of the result in the Scopus database

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