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Catalyst composition for ethylene oligomerization and application of catalyst composition

A technology for ethylene oligomerization and catalysts, which is applied in the direction of catalysts, hydrocarbons, hydrocarbons, etc., can solve the problems of poor repeatability of oligomerization reaction process and harsh process requirements, and achieve high selectivity, good repeatability, and rapid initiation Effect

Active Publication Date: 2017-10-24
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 application of catalyst composition
  • Catalyst composition for ethylene oligomerization and application of catalyst composition
  • Catalyst composition for ethylene oligomerization and application of catalyst composition

Examples

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Embodiment 1

[0024] The ethylene oligomerization reaction specifically includes the following steps: (1) replacing the reaction system by operations such as drying at high temperature and vacuum displacement to ensure that there is no water and oxygen in the reaction system; (2) using ethylene to replace the reaction system to make the reaction The system is in ethylene environment; (3) in the reactor, add tert-butyl hydroperoxide and toluene solvent, add 1.37ml triethylaluminum toluene solution (concentration is 715 μmol / ml), add 2ml chlorination-2-propionyl- 5,6-Dimethyl-1,10-phenanthroline-2,6-diethylaniline iron(II) complex (ie R 3 and R 4 is methyl, and R 1 , R 2 , R 5 and R 6 After the toluene solution (concentration is 2.5μmol / ml) of hydrogen), the total amount of the composition is 100ml, wherein, based on the weight of the organic solvent (toluene), the weight content of tert-butyl hydroperoxide is 25ppm , Al / Fe=196, after fully stirring, feed into ethylene and start the olig...

Embodiment 2

[0026] With Example 1, the difference is that the weight content of tert-butyl hydroperoxide is 100 ppm. The data are shown in Table 1.

Embodiment 3

[0028] With Example 1, the difference is that the weight content of tert-butyl hydroperoxide is 250ppm. The data are shown in Table 1.

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Abstract

The invention discloses a catalyst composition for an ethylene oligomerization reaction technology. The catalyst composition comprises a main catalyst, namely a chlorination substituted-2-propionyl-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 reaction process. Background technique [0002] Linear α-olefins are widely used in 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 alpha-olefins are prepared by oligomerization of ethylene. The catalysts used in the ethylene oligomerization method mainly include nickel series, chromium series, zirconium series and aluminum series, etc. In recent years, the Brookhart group (Brookhart, M et al, J. Am. Chem. ; WO99 / 02472, 1999), the Gibson group (Gibson, V.C. et al, Chem. Commun., 1998, 849-850; Chem. Eur. J., 2000, 2221-2231) found some Fe(II) and Co, respectively The tridenta...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07C2/22C07C11/107C07C11/02C07C11/08
CPCC07C2/22B01J31/143B01J31/183C07C2531/22B01J2531/0241B01J2540/10B01J2531/842B01J35/19C07C11/107C07C11/02C07C11/08
Inventor 刘珺王怀杰郑明芳张海英吴红飞
Owner CHINA PETROLEUM & CHEM CORP
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