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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Characterization and use of MoO3 modified alumosilicates in Prins cyclization of isoprenol and isovaleraldehyde
Original language description
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.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10401 - Organic chemistry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)