Multifunctional catalysts based on palladium nanoparticles supported on functionalized halloysites: Applications in catalytic C-C coupling, selective oxidation and dehalogenation reactions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00545681" target="_blank" >RIV/61388955:_____/21:00545681 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/21:00122655
Result on the web
<a href="http://hdl.handle.net/11104/0322351" target="_blank" >http://hdl.handle.net/11104/0322351</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.clay.2021.106272" target="_blank" >10.1016/j.clay.2021.106272</a>
Alternative languages
Result language
angličtina
Original language name
Multifunctional catalysts based on palladium nanoparticles supported on functionalized halloysites: Applications in catalytic C-C coupling, selective oxidation and dehalogenation reactions
Original language description
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 P-donor 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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Clay Science
ISSN
0169-1317
e-ISSN
1872-9053
Volume of the periodical
214
Issue of the periodical within the volume
NOV 2021
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
11
Pages from-to
106272
UT code for WoS article
000702913100009
EID of the result in the Scopus database
2-s2.0-85114387528