Molybdenum Silicate Microspheres Prepared via Non-aqueous Sol Gel and Their Catalytic Activity in Propylene Metathesis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F23%3A63575118" target="_blank" >RIV/70883521:28610/23:63575118 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Molybdenum Silicate Microspheres Prepared via Non-aqueous Sol Gel and Their Catalytic Activity in Propylene Metathesis
Original language description
ln this work, we introduce amorphous and porous molybdenum silicate microspheres as highly active catalysts for heterogeneous propylene metathesis. The synthesis of molybden um silicate microspheres is ba sed on a microwave-assisted reaction of bis(acetylacetonato)dioxomolybdenum(VI) and biphenyl-4,4'-dicarboxylic acid that provides hybrid molybden um biphenyl dicarboxylate-based precursor and its subsequent non-aqueous condensation with (3-Aminopropyl)triethoxysilane.1 After the calcination of as-prepared hybrid metallosilicate products at 500 °C amorphous and porous Mo-SiO2 microspheres with highly dispersed molybdate species were obtained. Based on the DRUV-Vis, Raman, and ToFSIMS results these catalysts contain mainly atomically dispersed MoOx species, which possess high catalytic activity in heterogeneous propylene metathesis. Compared to conventional silica-supported MoOx catalysts prepared via the incipient wetness impregnation method, the Mo-SiO2 microspheres exhibited nearly two orders of magnitude higher steady-state propylene metathesis rates, which reached values as high as 4.11·10-s mol g-1 s-1 .
Czech name
—
Czech description
—

Project
<a href="/en/project/LUAUS23085" target="_blank" >LUAUS23085: Synthesis of new highly active metallosilicate catalysts for olefin metathesis</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)