期刊
CHEMPHYSCHEM
卷 18, 期 14, 页码 1921-1928出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201700215
关键词
bimetallic CuPd catalyst; transmission electron microscopy; metal vapor synthesis; Sonogashira reactions; XAFS spectroscopy
资金
- Italian Ministry of University and Scientific Research (MIUR) [RBFR10BF5V]
CuPd bimetallic solvated metal atoms (SMA) synthesized by metal vapor synthesis (MVS) technique and supported on poly-4-vinylpyridine (PVPy) resin, showed significantly higher catalytic activity in Sonogashira-type carbon-carbon coupling reactions than the corresponding monometallic Cu and Pd systems as well as their physical mixture. The analysis of the bimetallic catalyst combining transmission electron microscopy techniques and X-ray absorption fine structure (XAFS) spectroscopy revealed the presence of small Pd nanoparticles (d(m) = 2.5 nm) while the analysis of the X-ray absorption data, at the Cu Kedge suggests the formation of thin and incomplete Cu oxide layers around the Pd-rich cores.
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