Catalyst composition and application for ethylene oligomerization
A technology for ethylene oligomerization and composition, applied in the field of catalyst compositions, can solve the problems of poor repeatability of oligomerization reaction process, harsh process requirements, etc., and achieve catalytic effect and cost balance, good repeatability, and rapid initiation effects.
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Embodiment 1
[0024] The ethylene oligomerization reaction specifically includes the following steps: (1) Replace the reaction system by high temperature drying, vacuum replacement and other operations to ensure that there is no water and oxygen in the reaction system; (2) Use ethylene to replace the reaction system to make the reaction system The system is in an ethylene environment; (3) add tert-butyl hydroperoxide and toluene solvent in the reaction kettle, add 1.37ml triethylaluminum toluene solution (concentration is 715μmol / ml), add 2ml chloride-2-benzoyl -5,6-Dimethyl-1,10-phenanthroline-2,6-diethylaniline iron (II) complex (R 3 and R 4 is methyl, and R 1 , R 2 , R 5 and R 6 After the toluene solution (concentration is 2.5 μ mol / ml) that is all hydrogen), make the composition total amount be 100ml, wherein, take the weight of organic solvent (being toluene) as calculation basis, the weight content of tert-butyl hydroperoxide is 25ppm, Al / Fe=196, after fully stirring, feed ethyle...
Embodiment 2
[0026] With embodiment 1, difference is that the weight content of tert-butyl hydroperoxide is 100ppm. See Table 1 for the data.
Embodiment 3
[0028] With embodiment 1, difference is that the weight content of tert-butyl hydroperoxide is 250ppm. See Table 1 for the data.
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