Some features and the mechanism of regulation of the molecular-mass distribution of products of ethylene oligomerization in the presence of zirconium-containing metal complex systems (A review)
| Autor: | B. V. Guliev, A. G. Azizov, M. D. Ibragimova, A. A. Khanmetov, R. V. Aliev, F. M. Velieva |
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| Rok vydání: | 2008 |
| Předmět: |
Zirconium
Ethylene Molecular mass Chemistry General Chemical Engineering Inorganic chemistry Complex system Energy Engineering and Power Technology chemistry.chemical_element General Chemistry Combinatorial chemistry Product distribution Catalysis Metal chemistry.chemical_compound Fuel Technology Geochemistry and Petrology visual_art visual_art.visual_art_medium Carboxylate |
| Zdroj: | Petroleum Chemistry. 48:405-413 |
| ISSN: | 1555-6239 0965-5441 |
| Popis: | It was shown that the deviation of the product distribution from the Schultz-Flory law upon ethylene oligomerization in the presence of some catalytic systems based on zirconium compounds is due to their multisite character and a multiroute mechanism of the process. The feasibility of switching the base multiroute multisite multifunctional catalyst systems to monofunctional operation with a narrow molecular-mass distribution (MMD) of oligomerization products was shown using zirconyl carboxylate systems as an example. A comparative evaluation of the kinetic parameters of individual ethylene oligomerization steps and an analysis of the behavior of the MMD in the presence of three different catalyst systems were performed. A possible mechanism of regulation of the character and width of the MMD of the oligomerization products is discussed. |
| Databáze: | OpenAIRE |
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