Characterization and use of MoO3 modified alumosilicates in Prins cyclization of isoprenol and isovaleraldehyde

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F18%3A43916187" target="_blank" >RIV/60461373:22310/18:43916187 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10934-017-0440-z" target="_blank" >https://link.springer.com/article/10.1007/s10934-017-0440-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10934-017-0440-z" target="_blank" >10.1007/s10934-017-0440-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization and use of MoO3 modified alumosilicates in Prins cyclization of isoprenol and isovaleraldehyde

Popis výsledku v původním jazyce

MoO3 modified alumosilicates were prepared by impregnation method and used in Prins cyclization of isoprenol and isovaleraldehyde forming 2-isobutyl-4-methyltetrahydro-2H-pyran-4-ol (important compound for fragrant industry). Alumosilicates of Siral type were chosen as supports and compared with pure silica and alumina. Prepared catalysts were characterized by available methods: XRD, XRF, solid UV-Vis, TGA, TPD of pyridine, nitrogen adsorption and SEM. It was found that impregnation of Siral by MoO3 gave homogeneous distribution of Mo species on the support. On the other side using pure silica as a support the crystallic structure of MoO3 was detected in the resulting material. Impregnation of pure alumina by MoO3 resulted in the formation of aluminum molybdate. All prepared materials were used in above mentioned reaction. With increasing amount of silica in alumosilicate the increase of reaction rate and selectivity was observed up to 40% of silica in the material. Comparable results (selectivity to substituted tetrahydropyranol up to 50%) were obtained using Siral 40 and silica as supports for MoO3. These materials may be also used repeatedly without loss of activity and selectivity.

Název v anglickém jazyce

Characterization and use of MoO3 modified alumosilicates in Prins cyclization of isoprenol and isovaleraldehyde

Popis výsledku anglicky

MoO3 modified alumosilicates were prepared by impregnation method and used in Prins cyclization of isoprenol and isovaleraldehyde forming 2-isobutyl-4-methyltetrahydro-2H-pyran-4-ol (important compound for fragrant industry). Alumosilicates of Siral type were chosen as supports and compared with pure silica and alumina. Prepared catalysts were characterized by available methods: XRD, XRF, solid UV-Vis, TGA, TPD of pyridine, nitrogen adsorption and SEM. It was found that impregnation of Siral by MoO3 gave homogeneous distribution of Mo species on the support. On the other side using pure silica as a support the crystallic structure of MoO3 was detected in the resulting material. Impregnation of pure alumina by MoO3 resulted in the formation of aluminum molybdate. All prepared materials were used in above mentioned reaction. With increasing amount of silica in alumosilicate the increase of reaction rate and selectivity was observed up to 40% of silica in the material. Comparable results (selectivity to substituted tetrahydropyranol up to 50%) were obtained using Siral 40 and silica as supports for MoO3. These materials may be also used repeatedly without loss of activity and selectivity.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10401 - Organic chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Porous Materials

ISSN

1380-2224

e-ISSN

—

Svazek periodika

25

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

273-281

Kód UT WoS článku

000419943300027

EID výsledku v databázi Scopus

2-s2.0-85018772772