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


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

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dc.contributor.author Sanada, Takashi pl
dc.contributor.author Murakami, Chika pl
dc.contributor.author Góra-Marek, Kinga [SAP11018751] pl
dc.contributor.author Iida, Keiko pl
dc.contributor.author Katada, Naonobu pl
dc.contributor.author Okumura, Kazu pl
dc.date.accessioned 2015-06-19T11:58:13Z
dc.date.available 2015-06-19T11:58:13Z
dc.date.issued 2013 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/9920
dc.language eng pl
dc.rights Udzielam licencji. Uznanie autorstwa 3.0 *
dc.rights.uri http://creativecommons.org/licenses/by/3.0/legalcode *
dc.title Fabrication and catalytic activity of thermally stable gold nanoparticles on ultrastable Y (USY) zeolites pl
dc.type JournalArticle pl
dc.description.physical 599-613 pl
dc.identifier.weblink https://www.mdpi.com/2073-4344/3/3/599/htm pl
dc.abstract.en Au 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.subject.en gold cluster pl
dc.subject.en USY zeolite pl
dc.subject.en nanoparticle pl
dc.subject.en Brønsted acid pl
dc.subject.en partial oxidation pl
dc.description.volume 3 pl
dc.description.number 3 pl
dc.description.publication 1,7 pl
dc.identifier.doi 10.3390/catal3030599 pl
dc.identifier.eissn 2073-4344 pl
dc.title.journal Catalysts pl
dc.language.container eng pl
dc.date.accession 2019-01-25 pl
dc.affiliation Wydział Chemii : Zakład Chemii Nieorganicznej pl
dc.subtype Article pl
dc.rights.original CC-BY; otwarte czasopismo; ostateczna wersja wydawcy; w momencie opublikowania; 0 pl
dc.identifier.project ROD UJ / P pl

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Udzielam licencji. Uznanie autorstwa 3.0 Except where otherwise noted, this item's license is described as Udzielam licencji. Uznanie autorstwa 3.0