Kinetika oxidace NO na železitých zeolitech: efekt typu zeolitového skeletu a typu železitých částic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F04%3A00107581" target="_blank" >RIV/61388955:_____/04:00107581 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

NO Oxidation Kinetics on Iron Zeolites: Influence of Framework Type and Iron Speciation

Popis výsledku v původním jazyce

Zeolites having MFI, FER and *BEA topology were loaded with iron using solid state cation exchange method. The Fe:Al atomic ratio was 1:4. The zeolites were characterized using nitrogen adsorption, FTIR and DR UV-Vis-NIR spectroscopy. The catalytic activity in NO oxidation and the occurrence of NOx adsorption was determined in a fixed-bed mini reactor using gas mixtures containing oxygen and water in addition to NO and NO2 and temperatures of 200-350.DEG.C. Under these reaction conditions, the NOx adsorption capacity of these iron zeolites was negligible. The kinetic data could be fitted with a LHHW rate expression assuming a surface reaction between adsorbed NO and adsorbed O2. The kinetic analysis revealed the occurrence of strong reaction inhibitionby adsorbed NO2. FER and MFI zeolites were more active than *BEA type zeolite. MFI zeolite is most active but suffers most from NO2 inhibition of the reaction rate.

Název v anglickém jazyce

NO Oxidation Kinetics on Iron Zeolites: Influence of Framework Type and Iron Speciation

Popis výsledku anglicky

Zeolites having MFI, FER and *BEA topology were loaded with iron using solid state cation exchange method. The Fe:Al atomic ratio was 1:4. The zeolites were characterized using nitrogen adsorption, FTIR and DR UV-Vis-NIR spectroscopy. The catalytic activity in NO oxidation and the occurrence of NOx adsorption was determined in a fixed-bed mini reactor using gas mixtures containing oxygen and water in addition to NO and NO2 and temperatures of 200-350.DEG.C. Under these reaction conditions, the NOx adsorption capacity of these iron zeolites was negligible. The kinetic data could be fitted with a LHHW rate expression assuming a surface reaction between adsorbed NO and adsorbed O2. The kinetic analysis revealed the occurrence of strong reaction inhibitionby adsorbed NO2. FER and MFI zeolites were more active than *BEA type zeolite. MFI zeolite is most active but suffers most from NO2 inhibition of the reaction rate.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

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

Název periodika

Topics in Catalysis

ISSN

1022-5528

e-ISSN

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Svazek periodika

30-31

Číslo periodika v rámci svazku

1/4

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

333-339

Kód UT WoS článku

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EID výsledku v databázi Scopus

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