Další formáty:
BibTeX
LaTeX
RIS
@article{1799522,
author = {DíazandSánchez, Miguel and Gomez Perez, Inmaculada Jennifer and Prashar, Sanjiv and Horáček, Michal and Lamač, Martin and Urbán, Béla and Pinkas, Jiří and GómezandRuiz, Santiago},
article_number = {November},
doi = {http://dx.doi.org/10.1016/j.clay.2021.106272},
keywords = {Catalysis; Palladium; Nanoclays; Halloysite nanotubes (HNTs); Alumina; Silica; Nanocatalysis},
language = {eng},
issn = {0169-1317},
journal = {Applied Clay Science},
title = {Multifunctional catalysts based on palladium nanoparticles supported on functionalized halloysites: Applications in catalytic C-C coupling, selective oxidation and dehalogenation reactions},
url = {https://doi.org/10.1016/j.clay.2021.106272},
volume = {214},
year = {2021}
}
TY - JOUR
ID - 1799522
AU - Díaz-Sánchez, Miguel - Gomez Perez, Inmaculada Jennifer - Prashar, Sanjiv - Horáček, Michal - Lamač, Martin - Urbán, Béla - Pinkas, Jiří - Gómez-Ruiz, Santiago
PY - 2021
TI - Multifunctional catalysts based on palladium nanoparticles supported on functionalized halloysites: Applications in catalytic C-C coupling, selective oxidation and dehalogenation reactions
JF - Applied Clay Science
VL - 214
IS - November
SP - 106272
EP - 106272
PB - Elsevier Ltd
SN - 01691317
KW - Catalysis
KW - Palladium
KW - Nanoclays
KW - Halloysite nanotubes (HNTs)
KW - Alumina
KW - Silica
KW - Nanocatalysis
UR - https://doi.org/10.1016/j.clay.2021.106272
N2 - A series of hybrid catalysts of the type, support-ligand-Pd (Sup-L-Pd), has been prepared and characterized and their activity in C-C coupling (Suzuki-Miyaura), selective oxidations and dehalogenation-hydrogenation processes studied. The hybrid Sup-L-Pd catalysts are made up of (i) different nano-sized supports, such as halloysite nanotubes (HNTs), SiO2, Al2O3 and mesoporous silica nanoparticles (MSNs), (ii) ligands (L) with N-, S- or Pdonor atoms and (iii) different quantities of Pd. Several combinations of support, ligand, and Pd quantity were used to determine the optimal composition of the nanostructured systems for the proposed catalytic reactions. The system based on HNTs functionalized with 2-(diphenylphosphino)ethyltriethoxysilane (PPETS) and 0.25% wt. Pd (HNTs-PPETS-Pd0.25) showed the most promising catalytic behaviour with multifunctional applicability in different catalytic processes and potential reusability. This catalyst gave turnover frequency (TOF) values of up to 155 h-1 in catalytic Suzuki-Miyaura C-C coupling reactions, up to 43 h-1 in selective catalytic oxidations and up to 65 h-1 in dehalogenation-hydrogenation processes of halogenated aromatic compounds. Furthermore, the system demonstrated in the different catalytic reactions, good recyclability after consecutive cycles with low Pd leaching.
ER -
DÍAZ-SÁNCHEZ, Miguel, Inmaculada Jennifer GOMEZ PEREZ, Sanjiv PRASHAR, Michal HORÁČEK, Martin LAMAČ, Béla URBÁN, Jiří PINKAS a Santiago GÓMEZ-RUIZ. Multifunctional catalysts based on palladium nanoparticles supported on functionalized halloysites: Applications in catalytic C-C coupling, selective oxidation and dehalogenation reactions. \textit{Applied Clay Science}. Elsevier Ltd, 2021, roč.~214, November, s.~106272-106282. ISSN~0169-1317. Dostupné z: https://dx.doi.org/10.1016/j.clay.2021.106272.
|
