Propylene Metathesis over Molybdenum Silicate Microspheres with Dispersed Active Sites

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F23%3A00132624" target="_blank" >RIV/00216224:14310/23:00132624 - isvavai.cz</a>
Alternative codes found
RIV/70883521:28610/23:63569778
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acscatal.3c02045" target="_blank" >https://pubs.acs.org/doi/10.1021/acscatal.3c02045</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acscatal.3c02045" target="_blank" >10.1021/acscatal.3c02045</a>

Result language
angličtina
Original language name
Propylene Metathesis over Molybdenum Silicate Microspheres with Dispersed Active Sites
Original language description
In this work, we demonstrate that amorphous and porous molybdenum silicate microspheres are highly active catalysts for heterogeneous propylene metathesis. Homogeneous molybdenum silicate microspheres and aluminum-doped molybdenum silicate microspheres were synthesized via a nonaqueous condensation of a hybrid molybdenum biphenyldicarboxylatebased precursor solution with (3-aminopropyl)triethoxysilane. The as-prepared hybrid metallosilicate products were calcined at 500 degrees C to obtain amorphous and porous molybdenum silicate and aluminum-doped molybdenum silicate microspheres with highly dispersed molybdate species inserted into the silicate matrix. These catalysts contain mainly highly dispersed MoOx species, which possess high catalytic activity in heterogeneous propylene metathesis to ethylene and butene. Compared to conventional silica-supported MoOx catalysts prepared via incipient wetness impregnation (MoIWI), the microspheres with low Mo content (1.5-3.6 wt %) exhibited nearly 2 orders of magnitude higher steady-state propylene metathesis rates at 200 degrees C, approaching site time yields of 0.11 s-1.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical 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)<br>S - Specificky vyzkum na vysokych skolach

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

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