Contribution of Fe and Protonic Sites in Calcined and Steamed ZSM-5 Zeolites to Oxidation of Benzene with N2O to Phenol and Selective Catalytic Reduction of NO with Propane to Nitrogen.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F03%3A54030181" target="_blank" >RIV/61388955:_____/03:54030181 - 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

Contribution of Fe and Protonic Sites in Calcined and Steamed ZSM-5 Zeolites to Oxidation of Benzene with N2O to Phenol and Selective Catalytic Reduction of NO with Propane to Nitrogen.

Original language description

NH4-(Fe)ZSM-5 zeolites with concentrations of Fe ranging from 30 to 2000 ppm, introduced into zeolites during their synthesis, either calcined in a dry oxygen at 720 K or steamed at 870 K in an oxygen stream with 30 % water vapor, were investigated in benzene oxidation with N2O to phenol and SCR-NOx to nitrogen. The concentration of Broensted and Lewis sites was determined by quantitative analysis of IR spectra of adsorbed d3-acetonitrile. The changes in Fe ion coordination were monitored by ESR spectraof Fe(III) ions. The Fe ions have been shown to control their performances in the above reactions, while the Al-related acid sites play only minor role. The steamed zeolites compared to calcined ones exhibited substantially higher activity in oxidationof benzene with N2O to phenol, while the SCR-NOx reaction to nitrogen was considerably suppressed. The steaming resulted in a dramatic decrease in concentration of Broensted sites, low concentration of Lewis sites.

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

2003

Confidentiality

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

Name of the periodical

Collection of Czechoslovak Chemical Communications

ISSN

0010-0765

e-ISSN

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Volume of the periodical

68

Issue of the periodical within the volume

10

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

14

Pages from-to

1805-1818

UT code for WoS article

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EID of the result in the Scopus database

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