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

Transition metal catalyst of polymerized ethene agent, prepartion method and application

A catalyst, nickel halide technology, applied in physical/chemical process catalysts, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problem of limiting the development of ethylene oligomerization industry and the selectivity of oligomerization products Low, low activity and other issues

Active Publication Date: 2006-07-05
CHINA PETROLEUM & CHEM CORP
View PDF3 Cites 44 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the catalysts that have been reported have the disadvantages of low selectivity and low activity of oligomerization products, and most of the above-mentioned catalysts are protected or covered by foreign patents, which seriously limits the development of my country's ethylene oligomerization industry. Research and development have independent knowledge Property right of ethylene oligomerization catalyst imminent

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
  • Transition metal catalyst of polymerized ethene agent, prepartion method and application
  • Transition metal catalyst of polymerized ethene agent, prepartion method and application
  • Transition metal catalyst of polymerized ethene agent, prepartion method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] 1. The preparation of catalyst 3a: 2-methoxy ethyl ether nickel bromide (0.123g, 0.35mmol) and corresponding phosphine-oxazoline ligand 2a (0.129g, 0.338mmol) were added in the Schlenk bottle, pumped Vacuum through N 2 After replacing three times, add treated dichloromethane (10ml), stir at room temperature for 3 hours, add n-hexane (20ml) after concentration, a red precipitate precipitates out, filter with Schlenk method, and vacuum dry to obtain complex 0.118g, 3a: Yield: 67.3%. IR(KBr): 2979; 1627(v C＝N ); 1480; 1435, 1377, 1345cm -1 . Elemental Analysis: C 22 h 20 Br 2 NNiOP: Calculated: C, 46.86; H, 3.58; N, 2.48. Test values: C, 47.10; H, 3.70; N, 2.46.

[0081] 2. Ethylene oligomerization: Dry the 250ml polymerization bottle equipped with a magnetic stirrer at 130°C for 6 hours continuously, vacuumize while it is hot and use N 2 Air replacement 3 times. Catalyst 3a (2.8 mg, 5 μmol) was added, followed by re-evacuation and replacement with ethylene twice...

Embodiment 2

[0083] 1. The preparation of catalyst 3a is the same as in Example 1.

[0084] 2. Ethylene oligomerization: Dry the 250ml polymerization bottle equipped with a magnetic stirrer at 130°C for 6 hours continuously, vacuumize while it is hot and use N 2 Air replacement 3 times. Catalyst 3a (2.8 mg, 5 μmol) and triphenylphosphine (2.6 mg, 10 μmol) were added, followed by evacuation and replacement with ethylene twice. Inject a certain amount of toluene (26.7ml) with a syringe, then add a toluene solution of methylaluminoxane (MAO) (1.54mol / L, 3.3ml) to make Al / Ni=1000, and keep 1 atm of ethylene at 25°C pressure, stirring vigorously for 30 minutes. Neutralize the MAO with dilute hydrochloric acid at 0°C, take a small amount of toluene layer, dry it with anhydrous sodium sulfate, and measure the content and distribution of oligomers by gas chromatography. Oligomerization activity: 5.27×10 5 g(oligomer)·mol -1 (Ni)·h -1 ·atm -1 . Oligomer Distribution: C 4 : 88.90%; C 6 : 1...

Embodiment 3

[0086] 1. The preparation of catalyst 3a is the same as in Example 1.

[0087] 2. Ethylene oligomerization: Vacuumize a 1L stainless steel kettle equipped with a mechanical stirrer and a thermocouple, replace it with nitrogen for 3 times, and then replace it with ethylene for 2 times. After cooling to room temperature, add the toluene solution of catalyst 3a (11mg, 20μmol) and a certain amount of toluene in sequence, and finally add a certain amount of methylaluminoxane (1.54mol / L, 13ml) to make Al / Ni=1000, the amount of toluene The total volume is 150ml. The ethylene pressure was raised to 20 atm and stirred vigorously at 25°C for 30 minutes. Neutralize the MAO with dilute hydrochloric acid at 0°C, take a small amount of toluene layer, dry it with anhydrous sodium sulfate, and measure the content and distribution of oligomers by gas chromatography. Oligomerization activity: 5.74×10 5 g(oligomer)·mol -1 (Ni)·h -1 ·atm -1 . Oligomer distribution: C 4 : 78.90%; C 6 : 7....

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

PropertyMeasurementUnit
Average pore sizeaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a 2-(2-(diphenyl phosphine) phenyl) oxazoline nickel halogenide series complex. Said invention provides the structure formula of said complex and its preparation method. Said invention also provides catalyst composition containing said complex and its application in ethylene oligopolymerization. Said catalyst composition has higher ethylene oligopolymerization activity, and the obtained oligomer takes ethylene dimmer and trimer as main components.

Description

Technical field: [0001] The invention relates to a transition metal catalyst after ethylene oligomerization, in particular to a novel N-P bidentate ligand nickel complex catalyst and a preparation method thereof. The invention also relates to a catalyst composition comprising the novel N-P bidentate ligand nickel complex catalyst and its use for catalyzing ethylene oligomerization. Background technique: [0002] Ethylene oligomerization is an important means of preparing linear α-olefins in industry. Linear alpha-olefins can be used in the preparation of detergents, plasticizers, fine chemicals, and as comonomers for linear low density polyethylene. Therefore, the production of linear alpha-olefins has become an independent branch in the petrochemical industry. In recent years, the research on late transition metal olefin polymerization and oligomerization catalysts has developed rapidly (Angew. Chem. Int. Ed. 1999, 38, 428-447; Chem. Rev. 2000, 100, 1169-1203). In additi...

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
IPC IPC(8): B01J31/24C07C2/32
CPCY02P20/52
Inventor 栗同林孙文华唐秀波介素云张凌燕
Owner CHINA PETROLEUM & CHEM CORP
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