About: TUN, IMF and-SVR zeolites; synthesis, properties and acidity

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: TUN, IMF and-SVR zeolites; synthesis, properties and acidity Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The effect of synthesis conditions on the preparation and properties of three novel zeolites TUN, IMF, and -SVR was investigated and compared with MFI. X-ray powder diffraction, infrared spectroscopy, chemical analysis, sorption measurements, and scanning electron microscopy were employed to characterize the textural and chemical properties of these zeolites. FTIR spectroscopy in combination with pyridine as probe molecule was used to describe the type, concentration and acid strength of these zeolites. Zeolite -SVR was synthesized with Si/Al ratios higher than 100 in contrast with TUN and IMF having Si/Al ratios about 20-30, respectively. TUN, MFI and IMF zeolites exhibit similar concentrations of Bronsted and Lewis acid sites and also similar acid strength of Bronsted sites. In contrast, the presence of one vacancy/unit cell in the case of -SVR zeolite substantially changes its acidic properties. Generally, zeolites TUN and IMF exhibit similar acidic properties in terms of acid strength and Bronsted to Lewis acid site ratio like MFI and due to their slightly larger pores higher activities in catalytic reactions are expected. The effect of synthesis conditions on the preparation and properties of three novel zeolites TUN, IMF, and -SVR was investigated and compared with MFI. X-ray powder diffraction, infrared spectroscopy, chemical analysis, sorption measurements, and scanning electron microscopy were employed to characterize the textural and chemical properties of these zeolites. FTIR spectroscopy in combination with pyridine as probe molecule was used to describe the type, concentration and acid strength of these zeolites. Zeolite -SVR was synthesized with Si/Al ratios higher than 100 in contrast with TUN and IMF having Si/Al ratios about 20-30, respectively. TUN, MFI and IMF zeolites exhibit similar concentrations of Bronsted and Lewis acid sites and also similar acid strength of Bronsted sites. In contrast, the presence of one vacancy/unit cell in the case of -SVR zeolite substantially changes its acidic properties. Generally, zeolites TUN and IMF exhibit similar acidic properties in terms of acid strength and Bronsted to Lewis acid site ratio like MFI and due to their slightly larger pores higher activities in catalytic reactions are expected. (en)
Title	TUN, IMF and-SVR zeolites; synthesis, properties and acidity TUN, IMF and-SVR zeolites; synthesis, properties and acidity (en)
skos:prefLabel	TUN, IMF and-SVR zeolites; synthesis, properties and acidity TUN, IMF and-SVR zeolites; synthesis, properties and acidity (en)
skos:notation	RIV/61388955:_____/10:00437171!RIV15-GA0-61388955
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA203/08/0604), P(GD203/08/H032), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	19-20
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Kubů, Martin Čejka, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyzikální chemie J. Heyrovského AV ČR, v.v.i.
http://linked.open...dnocenehoVysledku	293738
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/10:00437171
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	novel zeolites; diquats; TUN (en)
http://linked.open.../riv/klicoveSlovo	diquats novel zeolites TUN
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[728240C22F0F]
http://linked.open...i/riv/nazevZdroje	Topics in Catalysis
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Advanced molecular sieves for capture and storage of CO2 and H2 Advanced catalytic processes and materials
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	53
http://linked.open...iv/tvurceVysledku	Kubů, Martin Čejka, Jiří Zones, S. I.
http://linked.open...ain/vavai/riv/wos	000283584800007
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	1022-5528
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s11244-010-9591-8

Faceted Search & Find service v1.16.118 as of Jun 21 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3240 as of Jun 21 2024, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (126 GB total memory, 48 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software