Electrochemical Synthesis of Zirconium Pre-Catalysts for Homogeneous Ethylene Oligomerization

The catalytic activity of electrochemically synthesized zirconium carboxylates was studied in the process of ethylene oligomerization. Zirconium carboxylates were electrochemically synthesized directly from metallic zirconium and corresponding carboxylic acids (acetic, octanoic and lauric). A compre...

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Bibliographic Details
Published in:Catalysts 2019-12, Vol.9 (12), p.1059
Main Authors: Bekmukhamedov, Giyjaz E., Sukhov, Aleksandr V., Kuchkaev, Aidar M., Khayarov, Khasan R., Gerasimov, Alexander V., Vasilenko, Irina V., Kostjuk, Sergei V., Yakhvarov, Dmitry G.
Format: Article
Language:English
Subjects:
Acids
Alkenes
Carboxylates
Carboxylic acids
Catalysts
Catalytic activity
Chemical reactions
Chemical synthesis
Electrodes
Electrolytes
Ethylene
Hydrogen
Infrared analysis
Infrared spectroscopy
NMR
Nuclear magnetic resonance
Oligomerization
Oxidation
Polyethylene
Spectrum analysis
Voltammetry
X ray powder diffraction
Zirconium
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Summary:The catalytic activity of electrochemically synthesized zirconium carboxylates was studied in the process of ethylene oligomerization. Zirconium carboxylates were electrochemically synthesized directly from metallic zirconium and corresponding carboxylic acids (acetic, octanoic and lauric). A comprehensive study (element analysis, nuclear magnetic resonance (NMR) and infrared (IR) spectroscopy, powder X-ray diffraction (PXRD)) of the synthesized zirconium carboxylates showed that these species contain bidentate carboxylate moieties. It was shown that obtained zirconium carboxylates, in combination with Et3Al2Cl3 (Al/Zr = 20), have a moderate activity of (7.6–9.9) × 103 molC2H4⋅molZr−1⋅h−1 in terms of ethylene oligomerization (at T = 80 °C, p = 20 bar), leading to even-numbered C4–C10 linear alpha-olefins.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal9121059