Ethylene tetramer catalyst composition and application thereof

A technology of ethylene tetramerization and catalyst, which is applied in the direction of catalytic reaction, physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, etc. It can solve the problems of poor yield and low selectivity of 1-octene , to achieve high selectivity

Active Publication Date: 2020-02-18
迈瑞尔实验设备(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the selectivity of 1-octene in the final product is very low, and the yield is relatively poor, generally no more than 30%....

Method used

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  • Ethylene tetramer catalyst composition and application thereof
  • Ethylene tetramer catalyst composition and application thereof
  • Ethylene tetramer catalyst composition and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A 500mL autoclave was used to vacuumize and replace with nitrogen for 3 times, then filled with ethylene for 2 times, and lowered to room temperature. Then dry anhydrous toluene was added at 30°C, and 20 μmol (1,2)-bis(diphenylphosphine)-[2,2,1]-O-cyclohexane, chromium acetylacetonate and activator triethyl base aluminum, the total volume of the composition is 100mL, wherein the molar ratio of oxygen-containing bridged cyclohexane ligand compound, chromium salt and activator triethylaluminum is 1:0.5:300, the reaction pressure is controlled at 2.0MPa, and ethylene , heated up to 60°C for ethylene tetramerization. After the reaction was completed, the system was cooled to room temperature, the gas phase product was collected in a gas metering tank, and the liquid phase product was collected in an Erlenmeyer flask, and 1 mL of ethanol was added as a terminator to terminate the ethylene tetramerization reaction. The test is carried out, and the test data results are shown...

Embodiment 2

[0032] A 500mL autoclave was used to vacuumize and replace with nitrogen for 3 times, then filled with ethylene for 2 times, and lowered to room temperature. Then dry anhydrous toluene was added at 30°C, and 20 μmol of (1,2)-bis(diphenylphosphine)-[2,2,1]-O-cyclohexane, tris(tetrahydrofuran)chromium trichloride were added simultaneously and activator triethylaluminum, the total volume of the composition is 100mL, wherein the molar ratio of oxygen bridged cyclohexane ligand compound, chromium salt and activator triethylaluminum is 1:0.5:300, and the reaction pressure is controlled to 2.0 MPa, feed ethylene, heat up to 60°C, and carry out ethylene tetramerization reaction. After the reaction was completed, the system was cooled to room temperature, the gas phase product was collected in a gas metering tank, and the liquid phase product was collected in an Erlenmeyer flask, and 1 mL of ethanol was added as a terminator to terminate the ethylene tetramerization reaction. The test...

Embodiment 3

[0034] A 500mL autoclave was used to vacuumize and replace with nitrogen for 3 times, then filled with ethylene for 2 times, and lowered to room temperature. Then dry anhydrous toluene was added at 30°C, and 20 μmol (1,2)-bis(diphenylphosphine)-[2,2,1]-O-cyclohexane, chromium trichloride and activator three were added at the same time. Ethylaluminum, the total volume of the composition is 100mL, wherein the molar ratio of oxygen bridged cyclohexane ligand compound, chromium salt and activator triethylaluminum is 1:0.5:300, the reaction pressure is controlled at 2.0MPa, and the Ethylene, the temperature is raised to 60°C to carry out ethylene tetramerization reaction. After the reaction was completed, the system was cooled to room temperature, the gas phase product was collected in a gas metering tank, and the liquid phase product was collected in an Erlenmeyer flask, and 1 mL of ethanol was added as a terminator to terminate the ethylene tetramerization reaction. The test is ...

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PUM

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Abstract

The invention discloses an ethylene tetramer catalyst composition which is characterized by comprising an oxygen bridge-containing cyclohexane ligand compound, a transition metal compound and an activator, wherein the oxygen bridge-containing cyclohexane ligand compound is a compound of a formula I shown in the description, and in the formula, R is selected from hydrogen, alkyl, alkoxyl or halogen. When the catalyst composition disclosed by the invention is adopted for an ethylene tetramerization reaction, a 1-octylene product can be produced with high selectivity, and the selectivity of 1-octylene can be up to 74% or greater.

Description

technical field [0001] The invention relates to the field of ethylene oligomerization, in particular to a catalyst polymer for ethylene tetramerization and its application. Background technique [0002] Linear α-olefins are an important class of organic chemical raw materials and have a wide range of applications. Among them, 1-octene, as an important organic raw material and chemical intermediate, can be used for the production of polyethylene and as an intermediate for the production of plasticizers, fatty acids, detergents and lubricating oils, etc. At present, the domestic production is small, and most of them need to be imported . [0003] The traditional production of 1-octene uses ethylene oligomerization. Many scientific research institutions and enterprises at home and abroad have conducted research on this. However, when 1-octene is prepared by the traditional ethylene oligomerization method, a mixture of various α-olefins is obtained, and the products are distr...

Claims

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Application Information

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IPC IPC(8): B01J31/14B01J31/34C07C2/08C07C11/02
CPCB01J31/143B01J31/34C07C2/08B01J2231/20C07C11/02Y02P20/52
Inventor 朱博源
Owner 迈瑞尔实验设备(上海)有限公司
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