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Catalyst for synthesizing 1-octylene and application thereof

A catalyst and main catalyst technology, applied in catalytic reaction, organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, etc., can solve the problems of low possibility of implementation and high cost of raw materials, and achieve the The effect of backward and cumbersome process, high catalyst activity and high yield

Pending Publication Date: 2021-11-05
SHANDONG JINGBO PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of raw materials for butadiene telomerization is too high, so it is unlikely to be implemented

Method used

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  • Catalyst for synthesizing 1-octylene and application thereof
  • Catalyst for synthesizing 1-octylene and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0051] In the present invention, the preparation method of the ligand, that is, a compound containing P and C, preferably includes:

[0052] After mixing the P-containing compound, the solvent and triethylamine, adding the C-containing compound and mixing to obtain a mixed solution;

[0053] reacting the mixed solution to obtain the ligand;

[0054] The molar ratio of the C-containing compound to the P-containing compound is 1: (1.1-3);

[0055] The solvent is at least one selected from n-hexane, cyclohexane, tetrahydrofuran, dichloromethane and toluene.

[0056] In the present invention, the P-containing compound is preferably selected from at least one of chlorodiphenylphosphine, phenylphosphine dichloride, di-p-tolylphosphine chloride, dicyclohexylphosphine chloride and trialkylphosphine kind.

[0057] In the present invention, the C-containing compound is preferably at least one selected from ethane, propane, n-butane, isobutane, cyclopentane, cyclohexane and phenyl alk...

Embodiment 1

[0102] Put 6ml of phenylphosphine dichloride, 60ml of dichloromethane and 15ml of triethylamine in an anaerobic and anhydrous flask filled with high-purity nitrogen, mix well at 0-20°C, add 1.2ml of ethyl alcohol alkane, stirred at 0-20°C for 0.2-2h to obtain a mixed solution; adjusted the temperature of the mixed solution to -35°C, stirred and reacted for 2h, and then suction-filtered the obtained reaction product under normal temperature and vacuum conditions, If the solution is not clear and transparent after suction filtration, it should be repeatedly suction filtered until it becomes clear; use a rotary evaporator to carry out rotary evaporation of the above clarified solution after suction filtration at 40-100°C under vacuum until the liquid is in the shape of quicksand; The steamed product was recrystallized with methanol to obtain the ligand of the compound containing P and C; the yield of the ligand was 75%.

[0103] The calculation method of ligand yield is:

[0104...

Embodiment 2

[0107]Put 15ml of diphenylphosphine chloride, 60ml of dichloromethane and 15ml of triethylamine in an anaerobic and anhydrous flask filled with high-purity nitrogen, mix well at 0-20°C, add 2.0ml of iso butane, stirred at 0-20°C for 0.2-2h to obtain a mixed solution; adjusted the temperature of the mixed solution to -20°C, stirred and reacted for 4h, and then suction-filtered the obtained reaction product under normal temperature and vacuum conditions, If the solution is not clear and transparent after suction filtration, it should be repeatedly suction filtered until it becomes clear; use a rotary evaporator to carry out rotary evaporation of the above clarified solution after suction filtration at 40-100°C under vacuum until the liquid is in the shape of quicksand; The steamed product was recrystallized with methanol to obtain the ligand of the compound containing P and C; the yield of the ligand was 77%.

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Abstract

The invention provides a catalyst for synthesizing 1-octylene. The catalyst comprises a main catalyst; a cocatalyst; and an accelerant. The main catalyst is composed of an active component and a ligand; the active component is a chromium-containing compound; and the ligand is a compound containing P and C. The cocatalyst is an organic aluminum compound. The catalyst provided by the invention can be used for synthesizing 1-octene through selective oligomerization of ethylene, and meanwhile, producing 1-hexene with a high added value as a byproduct. The catalyst provided by the invention has the characteristics of high catalyst activity, and high selectivity and purity of 1-octene. 1-octene and 1-hexene are important fine chemicals and have a great application prospect. The invention also provides an application of the catalyst for synthesizing 1-octene.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to a catalyst for synthesizing 1-octene and its application. Background technique [0002] 1-octene is a colorless liquid olefin compound, and is an important organic chemical raw material and chemical intermediate. It is mainly used as comonomer of polyethylene (PE), such as linear low density polyethylene (LLDPE), high density polyethylene (HDPE) and ethylene / 1-octene co-elastomer (POE). In addition, it can also be used as a raw material for organic chemical products such as plasticizers and surfactants. It is widely used in daily life and has an optimistic market prospect. With the rapid development of the PE industry, the demand for 1-octene is also increasing. Accelerating the development of catalysts for the synthesis of 1-octene in my country is of great significance for improving the overall level of my country's polyethylene industry. [0003] At present, the production...

Claims

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Application Information

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IPC IPC(8): B01J31/24C07C11/02C07C2/32
CPCB01J31/24B01J31/2409C07C2/32B01J2531/62B01J2231/20C07C11/02Y02P20/52
Inventor 岳瑞英谭伟张凤岐赵德明王耀伟栾波
Owner SHANDONG JINGBO PETROCHEM