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Ethylene oligomerization catalyst composition and application thereof

A technology of ethylene oligomerization and composition, which is applied in the field of ethylene oligomerization catalyst composition, can solve the problems of poor oligomerization process repeatability, high production cost, and harsh process requirements, and achieve rapid reaction initiation, stable operation, and repeatability Good results

Active Publication Date: 2017-10-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The Institute of Chemistry, Chinese Academy of Sciences reported a catalyst for ethylene oligomerization and polymerization (Eur.J.Inorg.Chem.2009,4149–4156), which is 2-benzoxazolyl-6-acetylcondensate Amine Fe 2+ Chloride, under the action of co-catalyst methyl aluminoxane, when the molar ratio of the metal aluminum in the co-catalyst to the central metal in the main catalyst is 200-2000, and the reaction temperature is 30-50 ° C, oligomerization and Polymerization activity up to 10 7 g mol(Fe) -1 h -1 ; and whether methylalumoxane or modified methylalumoxane is used as a cocatalyst, the cost is too high and the consumption is too large. When the cocatalyst is used in large-scale ethylene oligomerization, it will inevitably lead to high cost
[0004] At present, it is generally believed that water and oxygen are very unfavorable to the ethylene oligomerization process. CN200810111717.8 discloses a method for ethylene oligomerization, which is strictly controlled in an anhydrous and oxygen-free environment. Therefore, the current ethylene oligomerization reaction The process requirements are very harsh, resulting in very poor reaction initiation and repeatability of the oligomerization process

Method used

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  • Ethylene oligomerization catalyst composition and application thereof
  • Ethylene oligomerization catalyst composition and application thereof
  • Ethylene oligomerization catalyst composition and application thereof

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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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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07C2/32C07C11/02C07C11/08C07C11/10C07C11/107
CPCC07C2/32B01J31/0201B01J31/0212B01J31/0272B01J31/184B01J2231/20B01J35/19C07C11/02C07C11/08C07C11/10C07C11/107
Inventor 刘珺郑明芳张海英王怀杰吴红飞栗同林
Owner CHINA PETROLEUM & CHEM CORP
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