Observing the catalytic activity of novel titanosilicates in reactions with hydrogen peroxide

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F19%3A10242525" target="_blank" >RIV/61989100:27640/19:10242525 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Observing the catalytic activity of novel titanosilicates in reactions with hydrogen peroxide

Popis výsledku v původním jazyce

Titanium-containing zeolite-based catalysts have been synthesized and investigated as catalysts in methyl (phenyl)sulfide oxidation with hydrogen peroxide. A hierarchical TS-1 was prepared by the secondary templating and a layered TS-1 without and with silica and silica-titania pillars. The study deals with observation of the different catalytic performance with regard to textural properties; presence and volume of mesopores and different diffusion characteristics. All tested catalysts have shown after 240 min almost total conversion of methyl (phenyl)sulfide with different selectivity (substrate/catalyst mass ratio 10). The Ti-pillared TS-1 has shown, during the reaction progress, a decrease in the selectivity to sulfoxide from initial 60% to final 20% of sulfoxide at almost total conversion. The only case when higher selectivity to sulfone was achieved was gradual dosing of hydrogen peroxide.

Název v anglickém jazyce

Observing the catalytic activity of novel titanosilicates in reactions with hydrogen peroxide

Popis výsledku anglicky

Titanium-containing zeolite-based catalysts have been synthesized and investigated as catalysts in methyl (phenyl)sulfide oxidation with hydrogen peroxide. A hierarchical TS-1 was prepared by the secondary templating and a layered TS-1 without and with silica and silica-titania pillars. The study deals with observation of the different catalytic performance with regard to textural properties; presence and volume of mesopores and different diffusion characteristics. All tested catalysts have shown after 240 min almost total conversion of methyl (phenyl)sulfide with different selectivity (substrate/catalyst mass ratio 10). The Ti-pillared TS-1 has shown, during the reaction progress, a decrease in the selectivity to sulfoxide from initial 60% to final 20% of sulfoxide at almost total conversion. The only case when higher selectivity to sulfone was achieved was gradual dosing of hydrogen peroxide.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10401 - Organic chemistry

Projekt

<a href="/cs/project/LM2018098" target="_blank" >LM2018098: Energetické využití odpadů a čištění plynů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů