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

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About: On the Nature of Active Sites in Benzene Oxidation to Phenol with N2O over H-ZSM-5 with Low Fe Concentrations. Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 to determine 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. 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 to determine 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. (en)
Title	On the Nature of Active Sites in Benzene Oxidation to Phenol with N2O over H-ZSM-5 with Low Fe Concentrations. On the Nature of Active Sites in Benzene Oxidation to Phenol with N2O over H-ZSM-5 with Low Fe Concentrations. (en)
skos:prefLabel	On the Nature of Active Sites in Benzene Oxidation to Phenol with N2O over H-ZSM-5 with Low Fe Concentrations. On the Nature of Active Sites in Benzene Oxidation to Phenol with N2O over H-ZSM-5 with Low Fe Concentrations. (en)
skos:notation	RIV/61388955:_____/02:54020093!RIV/2003/AV0/A54003/N
http://linked.open.../vavai/riv/strany	109;118
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(IAA4040007), Z(AV0Z4040901)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Kubánek, Petr Wichterlová, Blanka Sobalík, Zdeněk
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	656975
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/02:54020093
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	H-ZSM-5; - Fe-zeolites; - N2O oxidation of benzene (en)
http://linked.open.../riv/klicoveSlovo	H-ZSM-5 - Fe-zeolites - N2O oxidation of benzene
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[0BB04008034E]
http://linked.open...i/riv/nazevZdroje	Journal of Catalysis
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Selective oxidation of hydrocarbons catalysed by Me-O/zeolite systems
http://linked.open...UplatneniVysledku	2002
http://linked.open...v/svazekPeriodika	211
http://linked.open...iv/tvurceVysledku	Sobalík, Zdeněk Wichterlová, Blanka Kubánek, Petr
http://linked.open...n/vavai/riv/zamer	Objasňování zákonitostí vztahů struktury a vlastností - zejména dynamiky a chemické reaktivity - látek a molekulárních systémů
issn	0021-9517
number of pages	10 (xsd:int)

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