Evangelisti Claudio, Balerna Antonella, Psaro Rinaldo, Fusini Graziano, Carpita Adriano, Benfatto Maurizio
Institute of Molecular Science and Technologies, CNR, viaG. Fantoli 16/15, 20138, Milano, Italy.
Frascati National Laboratories, INFN, Via E. Fermi 40, 00044, Frascati, Roma, Italy.
Chemphyschem. 2017 Jul 19;18(14):1921-1928. doi: 10.1002/cphc.201700215. Epub 2017 May 30.
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 =2.5 nm) while the analysis of the X-ray absorption data, at the Cu K-edge suggests the formation of thin and incomplete Cu oxide layers around the Pd-rich cores.
通过金属气相合成（MVS）技术合成并负载在聚4-乙烯基吡啶（PVPy）树脂上的铜钯双金属溶剂化金属原子（SMA），在Sonogashira型碳-碳偶联反应中显示出比相应的单金属铜和钯体系及其物理混合物更高的催化活性。结合透射电子显微镜技术和X射线吸收精细结构（XAFS）光谱对双金属催化剂进行分析，结果表明存在小的钯纳米颗粒（d = 2.5 nm），而在铜K边对X射线吸收数据的分析表明，在富钯核周围形成了薄且不完整的氧化铜层。
