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Heterocene Catalysts and Reaction Temperature Gradient in Dec-1-ene Oligomerization for the Production of Low Viscosity PAO Base Stocksстатья
- Авторы: Nifantev Ilya E., Vinogradov Alexander A., Bagrov Vladimir V., Kiselev Artem V., Minyaev Mikhail E., Samurganova Tatyana I., Ivchenko Pavel V.
- Журнал: Industrial and Engineering Chemistry Research
- Год издания: 2023
- Издательство: American Chemical Society
- Местоположение издательства: United States
- DOI: 10.1021/acs.iecr.3c00755
- Аннотация: Hydrogenated oligomers of higher α-olefins (primarily,dec-1-ene) with uniform structure represent high-quality poly-α-olefin oil (PAO) base stocks. High yields of lightweight dec-1-ene oligomers (DPn = 3−4) can be achieved by using 5,10-dihydroindeno[1,2-b]indole-based zirconium ansa-complexes,“heterocenes”. Unusual catalytic behavior of heterocenes served as a starting point for the present study, during which new, more synthetically available and active heterocene precatalysts were synthesized, and a novel oligomerization method, based on a reaction temperature gradient, was developed. A gradual decrease of the oligomerization temperature as dec-1-ene was consumed resulted in decreased dimer formation (down to 10%) and increased oligomer yields (up to 84%). After hydrogenation, low- and medium-viscosity PAO base oils with uniform structure and high viscosity indexes were obtained.
- Добавил в систему: Нифантьев Илья Эдуардович