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Catalytic Selective Hydrogenation and Cross Coupling Reaction Using Polyvinylpyrrolidone‐Capped Nickel Nanoparticles
Author(s) -
Bathla Aadil,
Pal Bonamali
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201800699
Subject(s) - catalysis , polyvinylpyrrolidone , nickel , particle size , nanoparticle , cinnamaldehyde , materials science , coercivity , remanence , coupling reaction , nuclear chemistry , chemical engineering , analytical chemistry (journal) , photochemistry , chemistry , magnetization , organic chemistry , polymer chemistry , nanotechnology , metallurgy , physics , condensed matter physics , quantum mechanics , magnetic field , engineering
This study signifies the size‐dependent catalytic activity of Ni‐nanocatalyst for the selective hydrogenation of cinnamaldehyde and Suzuki‐Miyaura cross‐coupling reaction. A series of polyvinylpyrrolidone capped nickel nanoparticles (NPs) with variation in their size are synthesized by polyol method. The morphological studies revealed that average size of Ni‐NPs (Ni‐NP1, Ni‐NP2, and Ni‐NP3) lies in the range of 10–12, 7–9, and 3–5 nm respectively. The optical measurements showed a significant blue shift in the absorption spectra for Ni‐NPs with decreasing particle size. The magnetic hysteresis loop revealed that the remanent magnetization (M R ) decreases and coercivity (H C ) increases with the decrease in particle size demonstrating a distinct size effect. The Ni‐NP3 was observed to possess higher surface area (79 m 2 g −1 ) and efficient activity for the selective hydrogenation of cinnamaldehyde to cinnamyl alcohol and also in the biphenyl formation via C−C cross‐coupling reaction relative to Ni‐NP1, Ni‐NP2, and commercially available Raney Ni.