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Catalyst composition for ethylene oligomerization and ethylene oligomerization method

An ethylene oligomerization and catalyst technology, which is applied to catalysts, hydrocarbons, hydrocarbons, etc., can solve the problems of poor repeatability of the oligomerization reaction process, harsh process requirements, etc., and achieve catalytic effect and cost balance, good repeatability, The effect of broad prospects for industrialization

Active Publication Date: 2020-03-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 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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  • 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
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Effect test

Embodiment 1

[0025] 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 substituted-2-n-butyl chloride Acyl-5,6-dimethyl-1,10-phenanthroline-2,6-diethylanilinate 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 (toluene) as calculation basis, the weight content of tert-butyl hydroperoxide is 25ppm , Al / Fe=196, after fully stirring...

Embodiment 2

[0027] With embodiment 1, difference is that the weight content of tert-butyl hydroperoxide is 100ppm. See Table 1 for the data.

Embodiment 3

[0029] 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 discloses a catalyst composition used in an ethylene oligomerization reaction process and its application. The composition includes a main catalyst chlorinated substituted-2-butyryl-1,10-phenanthroles represented by formula (I). Phenolide-2,6-diethylaniline iron(II) complex, aluminum-containing cocatalyst and tert-butyl hydroperoxide. According to the present invention, the catalyst composition of the present invention is used in the ethylene oligomerization reaction process, which has very high oligomerization reaction activity, high selectivity of α-olefins, rapid initiation of oligomerization reaction, smooth operation, and repeatability. Good; even at a low aluminum / iron ratio, it still has very good oligomerization reaction activity; this overcomes the technical bias of those skilled in the art and achieves unexpected technical effects, and the catalytic effect and cost are better A good balance greatly reduces the cost of ethylene oligomerization reaction, has strong practicability and broad prospects for industrialization.

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. The present invention also relates to the use of the catalyst composition described above. 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 catalysts used in ethylene oligomerization mainly contain nickel series, chromium series, zirconium series and aluminum series etc. WO99 / 02472,1999), Gibson group (Gibson, V.C.et al, Chem.Commun., 1998,849-850; Chem.Eur.J., 2000,2221-2231) found some Fe(II) and Co( The tridentate pyridine imine c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C07C2/36C07C11/107C07C11/02C07C11/08
CPCC07C2/22B01J31/143B01J31/183C07C2531/22B01J2531/0241B01J2540/10B01J2531/842B01J35/19C07C11/107C07C11/02C07C11/08Y02P20/52
Inventor 刘珺郑明芳张海英王怀杰吴红飞
Owner CHINA PETROLEUM & CHEM CORP
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