Hexagonal Mesoporous Silica Supported Ultrasmall Copper Oxides for Oxidative Amidation of Carboxylic Acids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73588255" target="_blank" >RIV/61989592:15310/18:73588255 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/ipdf/10.1021/acssuschemeng.8b02247" target="_blank" >https://pubs.acs.org/doi/ipdf/10.1021/acssuschemeng.8b02247</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acssuschemeng.8b02247" target="_blank" >10.1021/acssuschemeng.8b02247</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hexagonal Mesoporous Silica Supported Ultrasmall Copper Oxides for Oxidative Amidation of Carboxylic Acids

Popis výsledku v původním jazyce

Hexagonal mesoporous silica (HMS) supported copper oxide nanoparticles were prepared by a one-pot sol-gel synthesis, and their physicochemical properties were determined by XRD, ICP-MS, SEM, TEM, and N-2 physisorption, HRTEM, and elemental mapping. A series of CuO/HMS catalysts was prepared with different Cu loadings (1, 1.5, 2, 2.5, 3, and 5 wt %). The catalytic performance of the prepared catalysts was investigated for the oxidative amidation of carboxylic acids. Notably, under mild reaction conditions the CuO/HMS catalysts exhibited excellent activity in terms of conversions (70-95%) and selectivity (80-86%). The improved catalytic performance of CuO/HMS catalysts may be attributed to the homogeneous dispersion and uniformity of the active copper species on the HMS support with a large surface area. Having investigated the functional group tolerance, the developed protocol can also be extended for the synthesis of insect repellent molecules such as N,N-diethyl phenylacetamide (DEPA), N,N-diethylbenzamide (DEB), and N,N-Diethyl-3-methylbenzamide (DEET) in good to excellent conversions with a better TON and E factor. The reaction protocol is sustainable due to its mild reaction conditions, high conversions, and selectivities superior to reported protocols. Importantly, the catalysts can be separated by simple centrifugation and can be recycled for several reaction cycles.

Název v anglickém jazyce

Hexagonal Mesoporous Silica Supported Ultrasmall Copper Oxides for Oxidative Amidation of Carboxylic Acids

Popis výsledku anglicky

Hexagonal mesoporous silica (HMS) supported copper oxide nanoparticles were prepared by a one-pot sol-gel synthesis, and their physicochemical properties were determined by XRD, ICP-MS, SEM, TEM, and N-2 physisorption, HRTEM, and elemental mapping. A series of CuO/HMS catalysts was prepared with different Cu loadings (1, 1.5, 2, 2.5, 3, and 5 wt %). The catalytic performance of the prepared catalysts was investigated for the oxidative amidation of carboxylic acids. Notably, under mild reaction conditions the CuO/HMS catalysts exhibited excellent activity in terms of conversions (70-95%) and selectivity (80-86%). The improved catalytic performance of CuO/HMS catalysts may be attributed to the homogeneous dispersion and uniformity of the active copper species on the HMS support with a large surface area. Having investigated the functional group tolerance, the developed protocol can also be extended for the synthesis of insect repellent molecules such as N,N-diethyl phenylacetamide (DEPA), N,N-diethylbenzamide (DEB), and N,N-Diethyl-3-methylbenzamide (DEET) in good to excellent conversions with a better TON and E factor. The reaction protocol is sustainable due to its mild reaction conditions, high conversions, and selectivities superior to reported protocols. Importantly, the catalysts can be separated by simple centrifugation and can be recycled for several reaction cycles.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

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>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

ACS Sustainable Chemistry &amp; Engineering

ISSN

2168-0485

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

12935-12945

Kód UT WoS článku

000446413100041

EID výsledku v databázi Scopus

2-s2.0-85053889326