Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of catalyst system for the selective oligomerization of ethylene to prepare 1-octene, its preparation method and application

An ethylene oligomerization and selective technology, applied in chemical instruments and methods, physical/chemical process catalysts, compounds of elements of Group 5/15 of the periodic table, etc., can solve the problem of high oligomer content, 1-octene selection Problems such as low sex, to achieve high selectivity

Active Publication Date: 2022-04-29
迈瑞尔实验设备(上海)有限公司
View PDF27 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of catalyst system that is used for the selective oligomerization of ethylene to prepare 1-octene, to solve the low selectivity of 1-octene in the ethylene oligomerization reaction in the prior art, oligomer content is still relatively high high technical issues

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of catalyst system for the selective oligomerization of ethylene to prepare 1-octene, its preparation method and application
  • A kind of catalyst system for the selective oligomerization of ethylene to prepare 1-octene, its preparation method and application
  • A kind of catalyst system for the selective oligomerization of ethylene to prepare 1-octene, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] Preparation of Ligand Compound 1

[0047] Preparation of 2,5-bis(2-diphenylphosphine-phenyl)aniline: add (2-bromophenyl)-diphenylphosphine (2.4g , 7mmol, analytically pure, purchased from Aladdin Reagent Company), 2,5-diaminophenylboronic acid (633mg, 3.5mmol, analytically pure, purchased from Aladdin Reagent), [1,1′-bis(diphenylphosphine Base) ferrocene] palladium dichloride (143mg, 0.18mmol, analytically pure, purchased from Aladdin reagents), anhydrous potassium phosphate (2.3g, 11.5mmol, analytically pure, purchased from Aladdin reagents). Transfer the sealed tube to a glove box with an argon atmosphere, add 30 mL of anhydrous 1,4-dioxane (analytical grade, purchased from Aladdin reagent), seal the sealed tube with a cock, take it out, and heat it in an oil bath for 100- React at 105°C for 16 hours. Heating was stopped, and after cooling to room temperature, 20 mL of water was added to quench the reaction, the aqueous phase was extracted with ethyl acetate (analytic...

Embodiment 1

[0051] This example provides a catalyst system for the selective oligomerization of ethylene to produce 1-octene, which includes three components: ligand A, transition metal compound B, and activator C;

[0052] The ligand A is 2,5-bis(2-diphenylphosphine-phenyl)aniline (ligand compound 1), and the transition metal compound B is CrCl 3 (THF), activator C is methylaluminoxane (MAO);

[0053] The above-mentioned catalyst system is used for ethylene oligomerization to prepare 1-octene, and the specific steps are as follows:

[0054] Step 1: Add 100mL cyclohexane and MAO (Al: 5.0mmol) into a 300mL stainless steel reactor replaced by nitrogen, then heat to a temperature of 50°C;

[0055] Step 2: In a nitrogen atmosphere glove box, the CrCl in 20mL toluene 3 (THF) 3 3.7mg (0.010mmol) was added to a 50mL flask, followed by 6.1mg (0.010mmol) of 2,5-bis(2-diphenylphosphine-phenyl)aniline (ligand compound 1), and the mixture was stirred at room temperature 5min, then it is added in...

Embodiment 2

[0058] The difference between this embodiment and Example 1 is that ligand A is ligand compound 2 (C34H33NP 2 ), the addition amount is 5.2mg (0.010mmol). The quality and proportion of various products obtained, and the catalyst activity are shown in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a catalyst system for producing 1-octene from ethylene, which includes three components: ligand A, transition metal compound B, and activator C: the ligand A, whose structural formula is: The transition metal compound B is a metal compound of groups IVB-VIII; the activator C is selected from organoaluminum compounds or organoboron compounds. When the catalyst system of the present invention is used for ethylene oligomerization, it has excellent selectivity of ethylene tetramerization to 1-octene, lower oligomer generation, and has a clearer technical field of ethylene oligomerization to 1-octene application prospects.

Description

technical field [0001] The present invention relates to a catalyst system for the tetramerization of ethylene and a process for the preparation of 1-octene by tetramerization of ethylene using the catalyst system. Background technique [0002] 1-octene is a kind of advanced α-olefin. When it is used as a comonomer for ethylene polymerization, the copolymer has excellent mechanical properties and is regarded as an important direction for upgrading polyethylene products. In recent years, high-purity The demand for 1-octene is growing rapidly. In the prior art, 1-octene and other higher linear α-olefins are obtained by ethylene oligomerization. However, in the conventional ethylene oligomerization technology, the product generally contains a variety of higher α-olefins, which conform to the Schulz-Flory distribution or Poisson distribution, and the selectivity to 1-octene is not high. For example, U.S. Patent No. 6,184,428 discloses a nickel-based catalyst comprising 2-diphen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/24C07F9/50C07F9/6568C07C2/36C07C11/02
CPCB01J31/2409B01J31/248C07F9/65683C07F9/5022C07C2/36B01J2531/62C07C11/02
Inventor 朱博源
Owner 迈瑞尔实验设备(上海)有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com