About: Exploring the catalytic activity of regular and ultralarge-pore Nb,Sn-SBA-15 mesoporous molecular sieves

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

About: Exploring the catalytic activity of regular and ultralarge-pore Nb,Sn-SBA-15 mesoporous molecular sieves 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	Byl syntetizován nový mesoporézní materiál na bázi Nb,Sn-SBA-15 přimým přidáním Sn a Nb do reakční směsi. Tento katalyzátor vykazuje vysokou disperzitu obou kovů v křemičitanové matrici. Optimalizace reakčních podmínek umožnla tvorbu mesoporézního síta s velikostí porů až 14 nm. Koordinace atomů byla studována pomocí UV-VIS a katalytických testů při oxidaci cyklohexenu v kapalné fázi. Podařilo se připravit nový typ katalyzátoru s vysokou oxidační aktivitou. (cs) A novel bifunctional mesoporous material Nb,Sn-SBA-15 has been synthesized in one pot synthesis by in-situ introduction of niobium and tin salts and by controlling the synthesis conditions. These molecular sieves possess a high dispersion of both metals resulting in both the strong and weak acidic sites being simultaneously formed on SBA-15. Optimization of acid concentration in synthetic gels resulted in tuning of pore geometries while maintaining high structural regularity and in silica frameworks appropriate for catalytic applications were proved by UV-vis spectroscopy and catalytic reaction. Activity and selectivity of niobium/tincontaining mesoporous molecular sieves have been tested in liquid phase oxidation of cyclohexene. On the basis of this investigation, the new efficient NbSBA-15 catalyst prepared via conventional synthesis has been selected. A novel bifunctional mesoporous material Nb,Sn-SBA-15 has been synthesized in one pot synthesis by in-situ introduction of niobium and tin salts and by controlling the synthesis conditions. These molecular sieves possess a high dispersion of both metals resulting in both the strong and weak acidic sites being simultaneously formed on SBA-15. Optimization of acid concentration in synthetic gels resulted in tuning of pore geometries while maintaining high structural regularity and in silica frameworks appropriate for catalytic applications were proved by UV-vis spectroscopy and catalytic reaction. Activity and selectivity of niobium/tincontaining mesoporous molecular sieves have been tested in liquid phase oxidation of cyclohexene. On the basis of this investigation, the new efficient NbSBA-15 catalyst prepared via conventional synthesis has been selected. (en)
Title	Exploring the catalytic activity of regular and ultralarge-pore Nb,Sn-SBA-15 mesoporous molecular sieves Exploring the catalytic activity of regular and ultralarge-pore Nb,Sn-SBA-15 mesoporous molecular sieves (en) Výzkum katalytické aktivity na bázi Nb,Sn-SBA-15 mesoporézních molekulových sít (cs)
skos:prefLabel	Exploring the catalytic activity of regular and ultralarge-pore Nb,Sn-SBA-15 mesoporous molecular sieves Exploring the catalytic activity of regular and ultralarge-pore Nb,Sn-SBA-15 mesoporous molecular sieves (en) Výzkum katalytické aktivity na bázi Nb,Sn-SBA-15 mesoporézních molekulových sít (cs)
skos:notation	RIV/61388955:_____/07:00085035!RIV08-AV0-61388955
http://linked.open.../vavai/riv/strany	1432;1437
http://linked.open...avai/riv/aktivita	P R Z
http://linked.open...avai/riv/aktivity	P(1ET400400413), P(FT-TA/040), R, Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	-
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Nekoksová, Iveta 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	421350
http://linked.open...ai/riv/idVysledku	RIV/61388955:_____/07:00085035
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	mesoporous molecular sieves; ultralerge-pore; Nb,Sn-SBA-15 (en)
http://linked.open.../riv/klicoveSlovo	mesoporous molecular sieves Nb Sn-SBA-15 ultralerge-pore
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[9D8176C333DC]
http://linked.open...i/riv/nazevZdroje	Studies in Surface Science and Catalysis
http://linked.open...in/vavai/riv/obor	CF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Development of a program environment for mathematic simulations and predictions in catalysis and electrocatalysis *The development of special types of oxidative catalysts for focused synthesis of fragrances.
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	170
http://linked.open...iv/tvurceVysledku	Čejka, Jiří Nekoksová, Iveta Feliczak, A. Nowak, I. Tomczak, A.
http://linked.open...n/vavai/riv/zamer	Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0167-2991
number of pages	6 (xsd:int)

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