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Synthesis of Pt-MWW with controllable nanoparticle size

SYSNO ASEP	0517545
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Synthesis of Pt-MWW with controllable nanoparticle size
Author(s)	Zhang, Y. (CZ) Kubů, Martin (UFCH-W)_RID Mazur, M. (CZ) Čejka, Jiří (UFCH-W)_{RID, ORCID, SAI}
Source Title	Catalysis Today. - : Elsevier - ISSN 0920-5861 Roč. 324, MAR 2019 (2019), s. 135-143
Number of pages	9 s.
Language	eng - English
Country	NL - Netherlands
Keywords	metal-clusters ; intercalation chemistry ; catalytic consequences ; 2-dimensional zeolites ; co oxidation ; single ; precursor ; atom ; reduction ; platinum
Subject RIV	CF - Physical ; Theoretical Chemistry
OECD category	Physical chemistry
R&D Projects	GA17-01440S GA ČR - Czech Science Foundation (CSF)
Method of publishing	Limited access
Institutional support	UFCH-W - RVO:61388955
UT WOS	000456316500017
EID SCOPUS	85050100303
DOI	10.1016/j.cattod.2018.07.015
Annotation	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.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2020
Electronic address	http://hdl.handle.net/11104/0302880

Number of the records: 1