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Catalyst composition for ethylene tetramerization and preparation method of ligand thereof

A technology of ethylene tetramerization and composition, applied in the field of ethylene tetramerization catalyst composition, can solve the problem of low selectivity of 1-octene

Inactive Publication Date: 2013-05-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

The traditional 1-octene production method is the ethylene oligomerization method. The ethylene oligomerization technology follows the Schulz-Flory distribution, not only 1-octene products are obtained, but also other α-olefins and a small amount of solid polymers, and the target product 1 - The selectivity of octene is very low, no more than 30%

Method used

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  • Catalyst composition for ethylene tetramerization and preparation method of ligand thereof
  • Catalyst composition for ethylene tetramerization and preparation method of ligand thereof
  • Catalyst composition for ethylene tetramerization and preparation method of ligand thereof

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Embodiment Construction

[0029] The following examples are only used to illustrate the present invention in detail, but it should be understood that the scope of the present invention is not limited to these examples.

[0030] Ligand Synthesis Example 1: Ligand L 1 (R 1 =R 2 = Ph, R 3 = Synthesis of iPr)

[0031] 1. Under the protection of nitrogen, add 0.05mol dichlorophenylphosphine and 200mL anhydrous dichloromethane into a round bottom flask, stir, cool down to 0°C in an ice bath, add 0.1mol isopropylamine, stir for about 10 hours, filter Insoluble impurities were removed, and the filtrate was distilled under reduced pressure (10 mm Hg) with a vacuum water pump to obtain an oily compound (II).

[0032] 2. Under the protection of nitrogen, add 0.02mol of diphenylphosphine chloride and 50mL of anhydrous dichloromethane into the round bottom flask, stir, cool down to 0°C in an ice bath, slowly add 0.01mol of the oil in step 1, about After the addition was completed in 1 hour, the ice bath was remo...

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Abstract

The invention provides a catalyst composition for ethylene tetramerization. The catalyst composition comprises a ligand shown as a formula (I), a transition metal compound and a catalyst promoter. The invention also provides a preparation method of the ligand and an ethylene tetramerization process. The catalyst composition for ethylene tetramerization provided by the invention can produce 1-hexene in high selectivity, and selectivity of 1-octene is higher than 70%.

Description

technical field [0001] The invention relates to the field of ethylene oligomerization, in particular to a catalyst composition for ethylene tetramerization. The invention also relates to the preparation method of the ligand in the catalyst composition and the application of the composition. Background technique [0002] As an important organic raw material and chemical intermediate, 1-octene is mainly used to produce high-quality polyethylene (PE). The linear low-density polyethylene (LLDPE) produced by the copolymerization of 1-octene and ethylene can significantly improve the properties of PE, especially the mechanical properties, optical properties, tear strength and impact strength of polyethylene. , very suitable for packaging films and agricultural covering films such as greenhouses and sheds. At the same time, 1-octene is also used as an intermediate for plasticizers, fatty acids, alcohols for detergents, and lubricating oil additives. [0003] Although the value of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/24C07F9/50C07C2/36C07C11/02
CPCY02P20/52
Inventor 吴红飞张立超韩春卉张凌燕栗同林郑明芳刘珺祁彦平
Owner CHINA PETROLEUM & CHEM CORP
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