Structural characterization of bimetallic Pd-Cu vapor derived catalysts

16th International Conference on X-ray Absorption Fine Structure

Balerna, Antonella^1 ; Evangelisti, Claudio^2 ; Psaro, Rinaldo^2 ; Fusini, Graziano^2,3 ; Carpita, Adriano^3

INFN, Frascati National Laboratory, Frascati

00044, Italy^1

CNR, Institute of Molecular Science and Technologies (ISTM), Milano

20138, Italy^2

Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa

56126, Italy^3

关键词: HRTEM analysis;    Mean diameter;    Metal atoms;    Metal vapor synthesis;    Microscopy technique;    Monometallic systems;    PD nano particle;    Structural characterization;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/712/1/012057/pdf
DOI  :  10.1088/1742-6596/712/1/012057

来源: IOP

【 摘 要 】

Pd-Cu bimetallic Solvated Metal Atoms (SMA) were synthesized by metal vapor synthesis technique and supported on PVPy resin. Since the catalytic activity, of the Pd-Cu system turned out to be quite high also compared to the corresponding monometallic system, a structural characterization, using electron microscopy techniques and X-ray Absorption Fine Structure spectroscopy, was performed. HRTEM analysis showed the presence of Pd particles distributed in a narrow range with a mean diameter of about 2.5 nm while the XAFS analysis, confirmed the presence of the Pd nanoparticles but revealed also some alloying with Cu atoms.