Solvent-induced selectivity in alpha-pinene oxide isomerization catalyzed by Fe-modified zeolite beta

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43918546" target="_blank" >RIV/60461373:22310/19:43918546 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22810/19:43918546

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2Fs11696-019-00713-0" target="_blank" >https://link.springer.com/article/10.1007%2Fs11696-019-00713-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11696-019-00713-0" target="_blank" >10.1007/s11696-019-00713-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Solvent-induced selectivity in alpha-pinene oxide isomerization catalyzed by Fe-modified zeolite beta

Popis výsledku v původním jazyce

-Pinene oxide rearrangement to important producttrans-carveol and campholenic aldehyde in the presence of zeolite beta modified by various amount of iron (0.625-20 wt%) was studied. The amount of iron influenced initial reaction rate and time for 50% conversion. The initial reaction rate decreased with decreasing amount of iron therefore with decreasing acidity. On the other side, the highest conversion achieved after 180min was in the case of material modified by 5wt% of iron. The selectivity was only slightly influenced by the iron amount, but very important was the influence of used solvent on product distribution. Large variety of solvents was used in this reaction (toluene, acetonitrile, 1,4-dioxane, acetone, N,N-dimethylformamide, N,N- dimethylacetamide, dimethyl sulfoxide). Using strongly basic polar solvents (e.g., dimethyl sulfoxide) the main product in the reaction mixture was trans-carveol and using low-basic solvents (e.g. toluene) it was campholenic aldehyde. It was shown that the product distribution may be induced by used solvent.

Název v anglickém jazyce

Solvent-induced selectivity in alpha-pinene oxide isomerization catalyzed by Fe-modified zeolite beta

Popis výsledku anglicky

-Pinene oxide rearrangement to important producttrans-carveol and campholenic aldehyde in the presence of zeolite beta modified by various amount of iron (0.625-20 wt%) was studied. The amount of iron influenced initial reaction rate and time for 50% conversion. The initial reaction rate decreased with decreasing amount of iron therefore with decreasing acidity. On the other side, the highest conversion achieved after 180min was in the case of material modified by 5wt% of iron. The selectivity was only slightly influenced by the iron amount, but very important was the influence of used solvent on product distribution. Large variety of solvents was used in this reaction (toluene, acetonitrile, 1,4-dioxane, acetone, N,N-dimethylformamide, N,N- dimethylacetamide, dimethyl sulfoxide). Using strongly basic polar solvents (e.g., dimethyl sulfoxide) the main product in the reaction mixture was trans-carveol and using low-basic solvents (e.g. toluene) it was campholenic aldehyde. It was shown that the product distribution may be induced by used solvent.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10401 - Organic chemistry

Projekt

<a href="/cs/project/LO1613" target="_blank" >LO1613: Výzkum nových materiálů pro chemický průmysl</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Chemical Papers

ISSN

2585-7290

e-ISSN

—

Svazek periodika

73

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

7

Strana od-do

1621-1627

Kód UT WoS článku

000467058700004

EID výsledku v databázi Scopus

2-s2.0-85065561840