Fabrication and catalytic activity of thermally stable gold nanoparticles on ultrastable Y (USY) zeolites

2013
journal article
article
12
cris.lastimport.scopus2024-04-07T13:28:34Z
cris.lastimport.wos2024-04-10T01:59:26Z
dc.abstract.enAu was deposited on ultrastable Y (USY) zeolites using an ion-exchange method. Up to 5.5 wt% Au was introduced into the NH4-form of USY zeolites. In contrast, deposition of Au hardly took place on the H- and Na-forms of Y-type zeolites, NH4-forms of mordenite, and ZSM-5. Treatment of the Au-loaded USY zeolite in a H2 atmosphere, afforded Au0 nanoparticles. These particles were thermally stable even at 973 K, where their mean particle diameter was 3.7 nm. In contrast, highly aggregated Au particles were observed after thermal treatment at temperatures lower than 523 K, followed by storage in air for a month. The resulting particle sizes were in good correlation with the IR band intensity of the adsorbed CO and the catalytic activity of Au in the aerobic oxidation of benzyl alcohol. The Au nanoparticles showed highest activity when the Au/USY zeolite was thermally treated at 673–973 K. A negligible deactivation was observed after repeating the reaction at least 12 times. In the case of Au/TiO2 catalyst prepared by the deposition-precipitation method, the highest activity was observed at 573 K, which was lower than the temperature used for the Au/USY zeolites. This study demonstrated the potential use of the NH4-form of USY zeolites for supporting Au.pl
dc.affiliationWydział Chemii : Zakład Chemii Nieorganicznejpl
dc.contributor.authorSanada, Takashipl
dc.contributor.authorMurakami, Chikapl
dc.contributor.authorGóra-Marek, Kinga - 128133 pl
dc.contributor.authorIida, Keikopl
dc.contributor.authorKatada, Naonobupl
dc.contributor.authorOkumura, Kazupl
dc.date.accession2019-01-25pl
dc.date.accessioned2015-06-19T11:58:13Z
dc.date.available2015-06-19T11:58:13Z
dc.date.issued2013pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number3pl
dc.description.physical599-613pl
dc.description.publication1,7pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume3pl
dc.identifier.doi10.3390/catal3030599pl
dc.identifier.eissn2073-4344pl
dc.identifier.projectROD UJ / Ppl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/9920
dc.identifier.weblinkhttps://www.mdpi.com/2073-4344/3/3/599/htmpl
dc.languageengpl
dc.language.containerengpl
dc.rightsUdzielam licencji. Uznanie autorstwa 3.0 Polska*
dc.rights.licenceCC-BY
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/legalcode*
dc.share.typeotwarte czasopismo
dc.subject.engold clusterpl
dc.subject.enUSY zeolitepl
dc.subject.ennanoparticlepl
dc.subject.enBrønsted acidpl
dc.subject.enpartial oxidationpl
dc.subtypeArticlepl
dc.titleFabrication and catalytic activity of thermally stable gold nanoparticles on ultrastable Y (USY) zeolitespl
dc.title.journalCatalystspl
dc.typeJournalArticlepl
dspace.entity.typePublication
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