Acidic and catalytic properties of hierarchical zeolites and hybrid ordered mesoporous materials assembled from MFI protozeolitic units

Serrano, D. P.; García, R. A.; Vicente, G.; Linares, M.; Vitvarová, Dana; Čejka, Jiří

doi:https://dx.doi.org/10.1016/j.jcat.2011.02.007

Number of the records: 1

Acidic and catalytic properties of hierarchical zeolites and hybrid ordered mesoporous materials assembled from MFI protozeolitic units

1.

SYSNO ASEP	0359005
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Acidic and catalytic properties of hierarchical zeolites and hybrid ordered mesoporous materials assembled from MFI protozeolitic units
Author(s)	Serrano, D. P. (ES) García, R. A. (ES) Vicente, G. (ES) Linares, M. (ES) Vitvarová, Dana (UFCH-W)_RID Čejka, Jiří (UFCH-W)_{RID, ORCID, SAI}
Source Title	Journal of Catalysis. - : Elsevier - ISSN 0021-9517 Roč. 279, č. 2 (2011), s. 366-380
Number of pages	15 s.
Language	eng - English
Country	US - United States
Keywords	hierarchical zeolites ; hybrid zeolitic-mesostructured materials ; Bronsted and Lewis acid centres
Subject RIV	CF - Physical ; Theoretical Chemistry
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
UT WOS	000289919800015
DOI	10.1016/j.jcat.2011.02.007
Annotation	Two types of MFI zeolitic materials with improved accessibility, hierarchical zeolites and hybrid ordered mesoporous materials are here compared in terms of textural, acidic and catalytic properties. In both cases, protozeolitic units were employed as starting building blocks, the growth of which was perturbed by a silanization agent (hierarchical ZSM-5) or controlled by assembling around surfactant micelles (hybrid ordered mesoporous material, HZM). Likewise, two standard samples (nanocrystalline ZSM-5 and Al-MCM-41) were used as reference. Nitrogen adsorption measurements confirmed the presence of a secondary porosity and a high share of non-microporous surface area in hierarchical ZSM-5, whereas no significant amount of micropores was detected in the hybrid HZM sample. However, 27Al MAS NMR measurements indicated that zeolitic fragments are present within the walls of the latter sample.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2012

Number of the records: 1