Synthesis, modification and application of layered double hydroxides as catalysts for Baeyer-Villiger oxidation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43922465" target="_blank" >RIV/60461373:22310/22:43922465 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0920586121005277?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920586121005277?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2021.11.045" target="_blank" >10.1016/j.cattod.2021.11.045</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis, modification and application of layered double hydroxides as catalysts for Baeyer-Villiger oxidation

Popis výsledku v původním jazyce

Baeyer-Villiger oxidation can be performed using both homogeneous and heterogeneous catalysts. This study deals with the preparation of tin-containing heterogeneous catalysts based on mixed oxides and their application in a model reaction, Baeyer-Villiger oxidation of citral to 2,6-dimethyl-1,5-dien-1-yl formate and subsequent hydrolysis to melonal. Hydrotalcites with different molar ratios of Mg:Al were prepared by co-precipitation method, calcined, and subsequently impregnated by SnCl2. Activity of such prepared catalysts was compared with Sn-mixed oxide catalysts in which SnO2 was already incorporated during coprecipitation and Sn-MCM-41 catalyst prepared by impregnation. The prepared catalysts were characterized. The catalytic activity of the prepared catalysts was tested in the model reaction using H2O2 as an oxidizing agent. Total conversion and almost 100% selectivity to the desired product was achieved at 80 °C after 2 h using mixed oxide modified with 5 wt% tin and 1.5 molar equivalents of a 50% H2O2 solution.

Název v anglickém jazyce

Synthesis, modification and application of layered double hydroxides as catalysts for Baeyer-Villiger oxidation

Popis výsledku anglicky

Baeyer-Villiger oxidation can be performed using both homogeneous and heterogeneous catalysts. This study deals with the preparation of tin-containing heterogeneous catalysts based on mixed oxides and their application in a model reaction, Baeyer-Villiger oxidation of citral to 2,6-dimethyl-1,5-dien-1-yl formate and subsequent hydrolysis to melonal. Hydrotalcites with different molar ratios of Mg:Al were prepared by co-precipitation method, calcined, and subsequently impregnated by SnCl2. Activity of such prepared catalysts was compared with Sn-mixed oxide catalysts in which SnO2 was already incorporated during coprecipitation and Sn-MCM-41 catalyst prepared by impregnation. The prepared catalysts were characterized. The catalytic activity of the prepared catalysts was tested in the model reaction using H2O2 as an oxidizing agent. Total conversion and almost 100% selectivity to the desired product was achieved at 80 °C after 2 h using mixed oxide modified with 5 wt% tin and 1.5 molar equivalents of a 50% H2O2 solution.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10401 - Organic chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Catalysis Today

ISSN

0920-5861

e-ISSN

1873-4308

Svazek periodika

390

Číslo periodika v rámci svazku

SI

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

69-77

Kód UT WoS článku

000782558000008

EID výsledku v databázi Scopus

2-s2.0-85121106940