Microwave-assisted condensation approach for vanadium silicate microspheres and their catalytic activity in cyclohexene epoxidation and ethyl lactate oxidation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F25%3A63593098" target="_blank" >RIV/70883521:28610/25:63593098 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/25:00141476

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1226086X25000024?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1226086X25000024?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jiec.2025.01.003" target="_blank" >10.1016/j.jiec.2025.01.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microwave-assisted condensation approach for vanadium silicate microspheres and their catalytic activity in cyclohexene epoxidation and ethyl lactate oxidation

Popis výsledku v původním jazyce

A novel, highly efficient condensation approach for the preparation of heterogeneous vanadium silicate microspherical catalyst is introduced. This synthetic method is based on a microwave-assisted preparation of hybrid vanadium biphenyl dicarboxylate-based precursor solution and subsequent condensation with (3-aminopropyl)triethoxysilane. The as-prepared hybrid metallosilicate is then calcined at 500 °C to obtain amorphous and porous vanadium silicate microspheres with highly dispersed vanadium species inserted into the silicate matrix. This catalyst with 2.85 wt% of vanadium contains evenly distributed VOx species, which possesses high catalytic activity in a cyclohexene epoxidation reaction, reaching a conversion of 54 % after 4 h with 92 % selectivity to cyclohexene oxide. The catalyst&apos;s TOF value achieved 220 h−1, indicating its high performance compared to vanadium-containing catalyst analogs. Furthermore, a significant catalytic activity of prepared vanadium silicate microspheres in ethyl lactate oxidation to ethyl pyruvate with the conversion of 21 % at mild conditions shows a high potential of the catalyst for industrial application compared to the contemporary V2O5 heterogeneous catalyst.

Název v anglickém jazyce

Microwave-assisted condensation approach for vanadium silicate microspheres and their catalytic activity in cyclohexene epoxidation and ethyl lactate oxidation

Popis výsledku anglicky

A novel, highly efficient condensation approach for the preparation of heterogeneous vanadium silicate microspherical catalyst is introduced. This synthetic method is based on a microwave-assisted preparation of hybrid vanadium biphenyl dicarboxylate-based precursor solution and subsequent condensation with (3-aminopropyl)triethoxysilane. The as-prepared hybrid metallosilicate is then calcined at 500 °C to obtain amorphous and porous vanadium silicate microspheres with highly dispersed vanadium species inserted into the silicate matrix. This catalyst with 2.85 wt% of vanadium contains evenly distributed VOx species, which possesses high catalytic activity in a cyclohexene epoxidation reaction, reaching a conversion of 54 % after 4 h with 92 % selectivity to cyclohexene oxide. The catalyst&apos;s TOF value achieved 220 h−1, indicating its high performance compared to vanadium-containing catalyst analogs. Furthermore, a significant catalytic activity of prepared vanadium silicate microspheres in ethyl lactate oxidation to ethyl pyruvate with the conversion of 21 % at mild conditions shows a high potential of the catalyst for industrial application compared to the contemporary V2O5 heterogeneous catalyst.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20401 - Chemical engineering (plants, products)

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)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Industrial and Engineering Chemistry

ISSN

1226-086X

e-ISSN

1226-086X

Svazek periodika

148

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

KR - Korejská republika

Počet stran výsledku

12

Strana od-do

502-513

Kód UT WoS článku

001503687000021

EID výsledku v databázi Scopus

2-s2.0-85214586279