Florol synthesis via Prins cyclization over hierarchical beta zeolites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F22%3A10453660" target="_blank" >RIV/00216208:11310/22:10453660 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ODu98fu8Ur" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ODu98fu8Ur</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mcat.2022.112683" target="_blank" >10.1016/j.mcat.2022.112683</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Florol synthesis via Prins cyclization over hierarchical beta zeolites

Popis výsledku v původním jazyce

A set of hierarchical beta zeolites with variable Si/Al ratios, nanoparticle sizes, textural and acidic properties was prepared using a hydrothermal treatment of a concentrated alkali metal-free protic acid-containing zeolite gel-precursor. The obtained catalysts were investigated in the Prins cyclization of isovaleraldehyde with isoprenol yielding a commercially valuable tetrahydropyranol (Florol). The highest yield of the desired product (55.4%) was achieved over a zeolite catalyst possessing moderate acidity, developed mesoporosity (V(meso) 0.60 cm3/g) and a high external surface area (290 m2/g). Preferable formation of substituted tetrahydropyranol over weak- and medium-strength Bronsted acid sites, on the one hand, and generation of the undesired dehydration products mainly over strong Bronsted acid sites, on the other hand, occurring in parallel routes were supported by the kinetic analysis of the reaction network.

Název v anglickém jazyce

Florol synthesis via Prins cyclization over hierarchical beta zeolites

Popis výsledku anglicky

A set of hierarchical beta zeolites with variable Si/Al ratios, nanoparticle sizes, textural and acidic properties was prepared using a hydrothermal treatment of a concentrated alkali metal-free protic acid-containing zeolite gel-precursor. The obtained catalysts were investigated in the Prins cyclization of isovaleraldehyde with isoprenol yielding a commercially valuable tetrahydropyranol (Florol). The highest yield of the desired product (55.4%) was achieved over a zeolite catalyst possessing moderate acidity, developed mesoporosity (V(meso) 0.60 cm3/g) and a high external surface area (290 m2/g). Preferable formation of substituted tetrahydropyranol over weak- and medium-strength Bronsted acid sites, on the one hand, and generation of the undesired dehydration products mainly over strong Bronsted acid sites, on the other hand, occurring in parallel routes were supported by the kinetic analysis of the reaction network.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA20-12099S" target="_blank" >GA20-12099S: Pokročilá charakterizace aktivních center v nových zeolitových katalyzátorech</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Molecular Catalysis

ISSN

2468-8231

e-ISSN

2468-8231

Svazek periodika

531

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

112683

Kód UT WoS článku

000872400800006

EID výsledku v databázi Scopus

2-s2.0-85138173489