Ethylene oligomerization catalyst composition and application thereof

Abstract

The invention relates to an ethylene oligomerization catalyst composition which comprises a chloride 2-benzoxazolyl-6-acetyl condensed amino ferrite (II) complex shown in formula I, an aluminum-containing promoter and tert-butyl hydroperoxide. The invention further provides an ethylene oligomerization method. The ethylene oligomerization catalyst composition provided by the invention is applied to ethylene oligomerization, and is high in reaction activity at low temperature in the presence of low Al / Fe, that is, the reaction activity is up to 1.62*10<7>g.mol (Fe)<1>.h<1>.

Description

technical field

[0001] The invention relates to the field of ethylene oligomerization, in particular to an ethylene oligomerization catalyst composition containing an acetylamide iron complex and an application thereof. Background technique

[0002] Linear α-olefins are widely used in the fields of ethylene comonomers, surfactant synthesis intermediates, plasticizer alcohols, synthetic lubricating oils and oil additives. In recent years, with the continuous development of the polyolefin industry, the worldwide demand for α-olefins has grown rapidly. At present, the vast majority of α-olefins are prepared by ethylene oligomerization. The used catalyst of ethylene oligomerization mainly contains nickel series, chromium series, zirconium series and aluminum series etc., in recent years, Brookhart group (Brookhart, M et al, J.Am.Chem.Soc.,1998,120,7143-7144 ; WO99 / 02472,1999), Gibson group (Gibson, V.C.et al, Chem.Commun.,1998,849-850; Chem.Eur.J.,2000,2221-2231) found some Fe...

Examples

Embodiment 1

[0033] 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; then use ethylene to replace the reaction system so that the reaction system is in an ethylene environment; then add tert-butyl to the reaction kettle Hydrogen oxide and toluene solvent, add 1.37ml triethylaluminum toluene solution (concentration: 715μmol / ml), add 2ml 2-benzoxazolyl-6-acetyl chloride 2,6-diethylanilinate iron (II) after the toluene solution (concentration is 2.5 μ mol / ml), make 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 ethylene to start the oligomerization reaction; then keep the ethylene pressure at 1MPa and the reaction temperature at 30°C for 30 minutes; after the reaction is stopped, a small amount of reaction product is ...

Embodiment 2

[0036] With embodiment 1, difference is that the weight content of tert-butyl hydroperoxide is 100ppm. See Table 1 for the data.

Embodiment 3

[0038] With embodiment 1, difference is that the weight content of tert-butyl hydroperoxide is 250ppm. See Table 1 for the data.

technical field

[0001] The invention relates to the field of ethylene oligomerization, in particular to an ethylene oligomerization catalyst composition containing an acetylamide iron complex and an application thereof. Background technique

[0002] Linear α-olefins are widely used in the fields of ethylene comonomers, surfactant synthesis intermediates, plasticizer alcohols, synthetic lubricating oils and oil additives. In recent years, with the continuous development of the polyolefin industry, the worldwide demand for α-olefins has grown rapidly. At present, the vast majority of α-olefins are prepared by ethylene oligomerization. The used catalyst of ethylene oligomerization mainly contains nickel series, chromium series, zirconium series and aluminum series etc., in recent years, Brookhart group (Brookhart, M et al, J.Am.Chem.Soc.,1998,120,7143-7144 ; WO99 / 02472,1999), Gibson group (Gibson, V.C.et al, Chem.Commun.,1998,849-850; Chem.Eur.J.,2000,2221-2231) found some Fe...

Examples

Embodiment 1

[0033] 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; then use ethylene to replace the reaction system so that the reaction system is in an ethylene environment; then add tert-butyl to the reaction kettle Hydrogen oxide and toluene solvent, add 1.37ml triethylaluminum toluene solution (concentration: 715μmol / ml), add 2ml 2-benzoxazolyl-6-acetyl chloride 2,6-diethylanilinate iron (II) after the toluene solution (concentration is 2.5 μ mol / ml), make 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 ethylene to start the oligomerization reaction; then keep the ethylene pressure at 1MPa and the reaction temperature at 30°C for 30 minutes; after the reaction is stopped, a small amount of reaction product is ...

Embodiment 2

[0036] With embodiment 1, difference is that the weight content of tert-butyl hydroperoxide is 100ppm. See Table 1 for the data.

Embodiment 3

[0038] 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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