Fabrication of Palladium Nanoparticles Supported on Natural Volcanic Tuff/Fe3O4 and Its Catalytic Role in Microwave-Assisted Suzuki–Miyaura Coupling Reactions

Natural minerals have a huge potential as stabilizers in the catalytic systems due to their high mechanical durability, porous surface, non-toxicity and abundance in nature. This study aims to the development of a magnetically retrievable, heterogeneous palladium catalytic system derived from volcan...

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Bibliographic Details
Published in:Catalysis letters 2021-04, Vol.151 (4), p.1102-1110
Main Authors: Baran, Talat, Akay, Sema, Kayan, Berkant
Format: Article
Language:English
Subjects:
Aromatic compounds
Biopolymers
Bromides
Catalysis
Catalysts
Catalytic converters
Chemical reactions
Chemical reduction
Chemical synthesis
Chemistry
Chemistry and Materials Science
Coupling
Halides
Industrial Chemistry/Chemical Engineering
Iodides
Iron oxides
Nanoparticles
Organometallic Chemistry
Palladium
Physical Chemistry
Reaction time
Silicon dioxide
Toxicity
Tuff
Zeolites
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Summary:Natural minerals have a huge potential as stabilizers in the catalytic systems due to their high mechanical durability, porous surface, non-toxicity and abundance in nature. This study aims to the development of a magnetically retrievable, heterogeneous palladium catalytic system derived from volcanic tuff (VT), an abundant form of zeolite, for Suzuki–Miyaura coupling (SMC) reactions. For this purpose, a new catalyst support was designed by loading volcanic tuff with Fe 3 O 4 (VT/Fe 3 O 4 ) and palladium nanoparticles were prepared on VT/Fe 3 O 4 via wet chemical reduction method (Pd NPs@VT/Fe 3 O 4 ). Then, Pd NPs@VT/Fe 3 O 4 was evaluated as a heterogeneous catalyst in the microwave-assisted production of biaryl via SMC reactions. Pd NPs@VT/Fe 3 O 4 efficiently coupled various substituted aryl iodides, bromides and chlorides in a very short reaction time, solvent-free media and in an air environment. Catalytic tests indicated that Pd NPs@VT/Fe 3 O 4 converted aryl halides into desired biaryls with a high yield up to 99%. Moreover, it was showed that Pd NPs@VT/Fe 3 O 4 retained its stability and catalytic performance by producing 92% yield after eight successive cycles. This study demonstrated that VT can be a good alternative support alongside other known supports such as biopolymers, carbon and silica based materials and it can be utilized for the synthesis of different catalysts. Graphic Abstract
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-020-03378-7