Ethylene oligomerization catalyst composition and application thereof
An ethylene oligomerization and catalyst technology, applied in the direction of hydrocarbons, hydrocarbons, physical/chemical process catalysts, etc., to achieve the effect of less polyethylene and high activity
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Embodiment 1
[0019] 1. Preparation of (diphenyl) phosphorus nitrogen (cyclopropyl) phosphorus (diphenyl) ligand
[0020] in the N 2 Add dehydrated dichloromethane (20mL), triethylamine (3.75mL), and diphenylphosphine chloride (1.326mL, 7.2mmol) into a fully replaced stirred 100mL reactor, cool to 0°C, and slowly Cyclopropylamine (3.6 mmol) was added. After stirring for 30 minutes, the reaction was continued at room temperature for 12 hours. Filtration and drying gave the product (0.87g, 56.6%).
[0021] 2. Preparation of 1,4-bis(N(P(phenyl) 2 ) 2 )-benzene ligand
[0022] in the N 2 Add dehydrated dichloromethane (20mL), triethylamine (3.75mL), and diphenylphosphine chloride (1.326mL, 7.2mmol) into a fully replaced stirred 100mL reactor, cool to 0°C, and slowly Add 1,4 phenylenediamine (0.19 g, 1.8 mmol). After stirring for 30 minutes, the reaction was continued at room temperature for 12 hours. Filtration and drying gave the product (0.8 g, 52.3%).
[0023] 3. Preparation of cat...
Embodiment 2
[0028] 1. Preparation of (diphenyl) phosphorus nitrogen (cyclopentyl) phosphorus (diphenyl) ligand
[0029] in the N 2 Add dehydrated dichloromethane (20mL), triethylamine (3.75mL), and diphenylphosphine chloride (1.326mL, 7.2mol) into a fully replaced stirred 100mL reactor, cool to 0°C, and slowly Add cyclopentylamine (0.415 mL, 3.5 mmol). After stirring for 30 minutes, the reaction was continued at room temperature for 12 hours. Filtration and drying gave the product (0.55 g, 32.68%).
[0030] 2. Preparation of catalyst
[0031] in the N 2 Add dehydrated cyclohexane (10 mL) into a fully replaced stirred 100 mL reactor, and add 1.4 mol / L in sequence according to the ratio of a: b: c: d: e = 1: 0.5: 50: 0.5: 0.5 Methylalumoxane toluene solution c, (diphenyl)phosphorus nitrogen (cyclopentyl)phosphorus (diphenyl) b, tetrahydrofuran chromium chloride a, 1,1,2,2-tetrabromoethane d, 1,4-bis(N(P(phenyl) 2 ) 2 )-benzene ligand e, after reacting at room temperature for 5 minut...
Embodiment 3
[0035] 1. Preparation of (diphenyl) phosphorus nitrogen (fluorenyl) phosphorus (diphenyl) ligand
[0036] in the N 2 Add dehydrated dichloromethane (20mL), triethylamine (3.75mL), and diphenylphosphine chloride (1.326mL, 7.2mol) into a fully replaced stirred 100mL reactor, cool to 0°C, and slowly Fluorenamine (0.652 g, 3.6 mmol) was added. After stirring for 30 minutes, the reaction was continued at room temperature for 12 hours. Filtration and drying gave the product (0.48g, 24.3%).
[0037] 2. Preparation of catalyst
[0038] in the N 2 Add dehydrated cyclohexane (10mL) into a fully replaced stirred 100mL reactor, and add propylaluminum oxide in the ratio of a:b:c:d:e=1:1:200:3:1 Alkane c, (diphenyl) phosphorus nitrogen (fluorenyl) phosphorus (diphenyl) b, chromium acetylacetonate a, 1,2-dimethoxyethane d, 1,4-bis(N(P(benzene base) 2 ) 2 )-benzene ligand e, after reacting at room temperature for 5 minutes, it is ready for use.
[0039] 3. Ethylene oligomerization
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