Yu. Yu. Titova*, L. B. Belykh, and F. K. Shmidt
Irkutsk State University, Irkutsk, 664003 Russia
*e-mail: ytitova60@gmail.com
Received September 8, 2015
Abstract—The size and nature of the nanoparticles forming in systems based on Ni(acac)2 · nH2O (n = 0, 0.5,
3.0) and AlEt3 have been determined by high-resolution electron microscopy and X-ray microanalysis. The
nickel cluster size depends on the water content of the precursor. The average particle diameter increases from
1.2 nm (Ni(acac)2 · 0.5H2O precursor) to 2.4 nm (Ni(acac)2 · 3H2O precursor). A homogeneous solution forms
in the Ni(acac)2–5AlEt3 system, as was demonstrated by examining the system under an electron microscope
whose resolving power allows particles larger than 0.7 nm to be detected.
Keywords: nickel catalysts, nickel precursor, Ziegler-type hydrogenation catalysts, transmission electron
microscopy, X-ray diffraction
DOI: 10.1134/S0023158416030137
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