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Catalyst composition for ethylene oligomerization and ethylene oligomerization method

An ethylene oligomerization and catalyst technology, which is applied in the fields of hydrocarbons, hydrocarbons, chemical instruments and methods, etc., can solve the problems of harsh process requirements, high production cost and high cost, and achieve high oligomerization reaction activity, stable operation, and high cost. quick effect

Active Publication Date: 2017-05-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether methylalumoxane or modified methylalumoxane is used as a cocatalyst, the cost is too high and the dosage is too large. When it is used as a cocatalyst for ethylene oligomerization on a large scale, it will inevitably lead to production costs. high
[0004] At present, it is generally believed that water is very unfavorable to the ethylene oligomerization reaction 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 is harmful to the process. The requirements are very demanding, resulting in very poor reaction initiation and repeatability of the oligomerization process

Method used

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  • Catalyst composition for ethylene oligomerization and ethylene oligomerization method
  • Catalyst composition for ethylene oligomerization and ethylene oligomerization method
  • Catalyst composition for ethylene oligomerization and ethylene oligomerization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The catalyst composition is used for the ethylene oligomerization reaction, which 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; Perform replacement to keep the reaction system in an ethylene environment; (3) Add a certain amount of aqueous toluene to the reaction kettle, add 1.37ml of triethylaluminum toluene solution (concentration is 715μmol / ml), add 2ml of 2-butyryl-chloride After condensing 1,10-phenanthroline into a toluene solution of 2,6-diethylanilinium iron (II) (concentration is 2.5 μmol / ml), the total amount of the composition is 100ml, by changing the used saturated water The ratio of toluene and anhydrous toluene makes the weight content of water based on the weight of the organic solvent be 5ppm, Al / Fe=196, after fully stirring, feed ethylene to start oligomerization; (4) keep the ethylene press...

Embodiment 2

[0030] Same as Example 1, the difference is that the weight content of water is 20ppm. See Table 1 for the data.

Embodiment 3

[0032] Same as Example 1, the difference is that the weight content of water is 50ppm. See Table 1 for the data.

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Abstract

The invention provides a catalyst composition used for ethylene oligomerization, which comprises a main catalyst chlorinated 2-butyryl-1,10-phenanthroline condensed amine iron (II) complex shown in formula I, an aluminium-containing cocatalyst, water and an organic solvent. The catalyst composition used for ethylene oligomerization has high oligomerization reaction activity and high alpha-olefin selectivity, the oligomerization reaction has the advantages of rapid initiation, stable operation and good repeatability; the catalyst composition has good oligomerization reaction activity under low aluminum / iron ratio, so that ethylene oligomerization reaction cost is greatly reduced, practicality is strong, and industrial prospect is wide.

Description

technical field [0001] The invention relates to the field of ethylene oligomerization, in particular to a catalyst composition used in an ethylene oligomerization process, and correspondingly to an ethylene oligomerization method. 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, the people such as M, 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., 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C07C2/30C07C11/02
Inventor 刘珺郑明芳王怀杰栗同林张海英李维真
Owner CHINA PETROLEUM & CHEM CORP