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.

Active Publication Date: 2020-05-12
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 and application for ethylene oligomerization
  • Catalyst composition and application for ethylene oligomerization
  • Catalyst composition and application for ethylene oligomerization

Examples

Experimental program
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Effect test

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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Abstract

The invention discloses a catalyst composition for an ethylene oligomerization reaction technology and an application of the catalyst composition. The composition comprises a main catalyst, namely a chlorination substituted-2-benzoyl-1,10-phenanthroline poly-2,6-diethylaniline ferrum (II) complex shown as formula (I) as shown in the specification, an aluminiferous promoter and tert-butyl hydroperoxide. When the catalyst composition is used for the ethylene oligomerization reaction technology, the catalyst composition has very high oligomerization reactivity and high alpha-olefin selectivity; an oligomerization reaction is initiated rapidly, runs steadily, and is good in repeatability; even at a low aluminum / ferrum ratio, the catalyst composition has very good oligomerization reactivity; technical prejudice of those skilled in the art is overcome; unexpected technical effects are obtained; a catalytical effect and cost are balanced better; the cost of the ethylene oligomerization reaction is greatly lowered; and the catalyst composition has strong practicability and wide industrialization prospects.

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. 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 complex of II) can catalyze the oligomerization of ethylene, and not only the catalytic activ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C07C11/08C07C11/107C07C11/02C07C2/32
CPCB01J31/2273B01J2231/20B01J2531/0213B01J2531/842C07C2/32C07C2531/22C07C11/08C07C11/107C07C11/02
Inventor 王怀杰刘珺郑明芳张海英吴红飞
Owner CHINA PETROLEUM & CHEM CORP
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