Catalytic rate enhancement observed for alkyne hydrocarboxylation using ruthenium carbonyl-capped nanostructures.
Surface functionalization of Ag nanocubes and nanoparticles with catalytically active ruthenium carbonyl oligomers has been carried out successfully. These functionalized nanostructures catalyze hydrocarboxylation onto terminal alkynes at significantly enhanced rates (33 times) compare to those observed for free ruthenium oligomers. The rate enhancement is facilitated by adsorption of substrates on the surface of the nanoparticles, thus bringing them into close proximity with the catalyst. The size and shape of the Ag nanostructures were retained, indicating that the metallic cores act mainly as a docking site.
Chong
Yuan Yi
YY
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
Goh
Wei Bin
WB
Tan
Sze Tat
ST
Fan
Wai Yip
WY
D015097:3-Mercaptopropionic Acid / Q000737:chemistry*; D000480:Alkynes / Q000737:chemistry; D002384:Catalysis; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry; D012428:Ruthenium / Q000737:chemistry*; D012834:Silver / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet
D000480:Alkynes; D012834:Silver; D012428:Ruthenium; D015097:3-Mercaptopropionic Acid