Understanding of the key properties of supported Cu-based catalysts and their influence on ester hydrogenolysis
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43922240" target="_blank" >RIV/60461373:22310/22:43922240 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/60461373:22320/22:43922240 RIV/60461373:22350/22:43922240
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S0920586121004429" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920586121004429</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2021.09.039" target="_blank" >10.1016/j.cattod.2021.09.039</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Understanding of the key properties of supported Cu-based catalysts and their influence on ester hydrogenolysis
Popis výsledku v původním jazyce
The application of Cr-free Cu-based catalysts in ester hydrogenolysis is a modern environmentally-friendly research approach. The comprehensive study of four supported Cu-based catalysts was performed using 8 wt% of Cu loaded on Al2O3, ZnO, TiO2 and ZrO2 supports by an impregnation method. Using XRD, H2-TPR, BET, pyridine-TPD, CO2-TPD and N2O-RFC methods, the effect of the support on the formation of Cu-nanoparticles was described. Al2O3 was evaluated as the support ensuring the highest nanoparticles dispersion, while Cu nanoparticles in Cu-TiO2 were liable to sintering. The catalysts were tested in dimethyl adipate hydrogenolysis, where the catalyst performance and activity (TOF) were evaluated and Cu-ZrO2 showed the best results. A correlation between the number of acid-base sites and the catalyst selectivity was revealed and the catalyst effect on the formation of various by-products was described. The intrinsic selectivity to hydrogenolysis products was found to decrease with the increasing acid-base character of the supports whereas the selectivity to transesterification and cyclization products increased. The hydrogenolysis activity was not a simple function of the number of the surface copper atoms, but it was affected by the support nature and its properties. © 2021 Elsevier B.V.
Název v anglickém jazyce
Understanding of the key properties of supported Cu-based catalysts and their influence on ester hydrogenolysis
Popis výsledku anglicky
The application of Cr-free Cu-based catalysts in ester hydrogenolysis is a modern environmentally-friendly research approach. The comprehensive study of four supported Cu-based catalysts was performed using 8 wt% of Cu loaded on Al2O3, ZnO, TiO2 and ZrO2 supports by an impregnation method. Using XRD, H2-TPR, BET, pyridine-TPD, CO2-TPD and N2O-RFC methods, the effect of the support on the formation of Cu-nanoparticles was described. Al2O3 was evaluated as the support ensuring the highest nanoparticles dispersion, while Cu nanoparticles in Cu-TiO2 were liable to sintering. The catalysts were tested in dimethyl adipate hydrogenolysis, where the catalyst performance and activity (TOF) were evaluated and Cu-ZrO2 showed the best results. A correlation between the number of acid-base sites and the catalyst selectivity was revealed and the catalyst effect on the formation of various by-products was described. The intrinsic selectivity to hydrogenolysis products was found to decrease with the increasing acid-base character of the supports whereas the selectivity to transesterification and cyclization products increased. The hydrogenolysis activity was not a simple function of the number of the surface copper atoms, but it was affected by the support nature and its properties. © 2021 Elsevier B.V.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20704 - Energy and fuels
Návaznosti výsledku
Projekt
<a href="/cs/project/GA20-28093S" target="_blank" >GA20-28093S: Nosičové hydrogenolýzní katalyzátory na bázi mědi</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Catalysis Today
ISSN
0920-5861
e-ISSN
1873-4308
Svazek periodika
397–399
Číslo periodika v rámci svazku
1 August 2022
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
9
Strana od-do
173-181
Kód UT WoS článku
000810505500003
EID výsledku v databázi Scopus
2-s2.0-85116913730