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Inne
New palladium – ZrO2 nano‐architectures from thermal transformation of UiO‐66‐NH2 for carbonylative Suzuki and hydrogenation reactions.
Autorzy
Rok wydania
2022
Czasopismo
Numer woluminu
28
Strony
e202103538/1-e202103538/8
DOI
10.1002/chem.202103538
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The new nanocomposites, Pd/C/ZrO2, PdO/ZrO2, and Pd/PdO/ZrO2, were prepared by thermal conversion of Pd@UiO-66-Zr−NH2 (MOF) in nitrogen or air atmosphere. The presence of Pd nanoparticles, uniformly distributed on the ZrO2 or C/ZrO2 matrix, was evidenced by transmission electron microscopy, scanning electron microscopy (SEM), Raman and X-ray Photoelectron Spectroscopy (XPS) methods. All pyrolysed composites retained the shape of the MOF template. They catalyze carbonylative Suzuki coupling under 1 atm CO with an efficiency significantly higher than the original Pd@UiO-66-Zr−NH2. The most active PdO/ZrO2 composite, formed benzophenone with TOF up to 1600 h−1, while by using Pd@UiO-66-Zr−NH2, much lower TOF values, 51–95 h−1, were achieved. After the reaction, PdO/ZrO2 was recovered with the same composition and catalytic activity. Very good results were also obtained in the transfer hydrogenation of benzophenones to alcohols with Pd/C/ZrO2 and PdO/ZrO2 catalysts under microwave irradiation.
Słowa kluczowe
carbonylative Suzuki coupling, MOF pyrolysis g, palladium, PdO/ZrO2 nanocomposities, transfer hydrogenation reactions
Adres publiczny
http://dx.doi.org/10.1002/chem.202103538
Strona internetowa wydawcy
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