Surface oxygen triggered size change of palladium nano-crystals impedes catalytic efficacy.
Palladium nano-crystals increase in size during the initial recycling in Heck cross coupling reactions. We demonstrate that oxygen adsorbed on the surface of palladium nano-crystals plays a pivotal role in driving the ripening. This in turn is associated with a loss in catalytic activity.
Centre for Strategic Nano-Fabrication, School of Biomedical, Biomolecular and Chemical Sciences, The University of Western Australia, Crawley, WA 6009, Australia.
Jianli
J
Zou
Scott G
SG
Stewart
Colin L
CL
Raston
K Swaminathan
KS
Iyer
D000179:Acrylates / Q000737:chemistry; D000327:Adsorption; D002384:Catalysis; D003432:Cross-Linking Reagents / Q000737:chemistry; D007462:Iodobenzenes / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D010100:Oxygen / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D010316:Particle Size; D011145:Polyvinyls / Q000737:chemistry; D011759:Pyrrolidines / Q000737:chemistry
D000179:Acrylates; D003432:Cross-Linking Reagents; D007462:Iodobenzenes; D011145:Polyvinyls; D011759:Pyrrolidines; C505150:poly(N-vinylpyrrolidine); D010165:Palladium; C032490:n-butyl acrylate; C031905:iodobenzene; D010100:Oxygen