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Synthesis of Pt-MWW with controllable nanoparticle size
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SYSNO ASEP 0517545 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Synthesis of Pt-MWW with controllable nanoparticle size Tvůrce(i) Zhang, Y. (CZ)
Kubů, Martin (UFCH-W) RID
Mazur, M. (CZ)
Čejka, Jiří (UFCH-W) RID, ORCID, SAIZdroj.dok. Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 324, MAR 2019 (2019), s. 135-143Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova metal-clusters ; intercalation chemistry ; catalytic consequences ; 2-dimensional zeolites ; co oxidation ; single ; precursor ; atom ; reduction ; platinum Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GA17-01440S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000456316500017 EID SCOPUS 85050100303 DOI 10.1016/j.cattod.2018.07.015 Anotace Zeolites doped with metal nanoparticles have shown the outstanding activity in many processes involving heterogeneous catalysis. The size of metal nanoparticles plays a decisive role in the performance of zeolite catalysts. However, the precise control of the size of nanoparticles is still limited. Herein, we present the synthesis of Pt-MWW zeolites with controllable nanoparticle size using a series of surfactants with different alkyl chain lengths for swelling of layered MCM-22 P. The interlayer distances of swollen materials increases with the length of the surfactant from 1.06 nm (C12OH) to 2.89 nm (C18OH). During swelling, the Pt nanoparticles were intercalated to the interlayer space of MCM-22 P. Further calcination resulted in Pt-MWW materials showing similar morphologies, textural properties and Pt content despite the differences in the initial interlayer distances. The factor that differentiated the synthesized materials was the average diameter of metal nanoparticles. As a result, the average size of Pt nanoparticles increased from 0.85 nm (MCM-22-C12OH-Pt) to 2.04 nm (MCM-22-C18OH-Pt) which is related to the length of the hydrocarbon chain of the surfactant used for the swelling process. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2020 Elektronická adresa http://hdl.handle.net/11104/0302880
Počet záznamů: 1