Carbon nanotube-supported metal ethylene oligomerization catalyst, preparation method and use
A technology of ethylene oligomerization and carbon nanotubes, applied in chemical instruments and methods, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc., can solve problems such as poor reusability and poor stability, Achieve high yield and high selectivity, excellent catalytic performance, and good application prospects
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Embodiment 1
[0065] Example 1: Preparation of carbon nanotube-supported metal ethylene oligomerization catalyst
[0066] S1: Under a nitrogen atmosphere, add 3-aminopropyltrimethoxysilane, salicylaldehyde and anhydrous sodium sulfate to an appropriate amount of organic solvent ethanol (the molar ratio of 3-aminopropyltrimethoxysilane to salicylaldehyde The molar ratio of 3-aminopropyltrimethoxysilane to anhydrous sodium sulfate is 1:2, 2.5:1), under reflux conditions, constant temperature reaction for 18 hours, after the reaction, naturally cool to room temperature, filter to obtain organic a mixture of ligands (II);
[0067] S2: Under nitrogen atmosphere, the mixture and nickel acetate (Ni(CH 3 COO) 2 ) into an appropriate amount of ethanol (the molar ratio of nickel acetate to the organic ligand (II) in the mixture is 1.6:1), and react at a constant temperature at room temperature for 18 hours. After the reaction is completed, add an appropriate amount of ether to the reaction mixture,...
Embodiment 2
[0072] Example 2: Preparation of carbon nanotube-supported metal ethylene oligomerization catalyst
[0073]S1: Under a nitrogen atmosphere, add 3-aminopropyltrimethoxysilane, salicylaldehyde and anhydrous sodium sulfate to an appropriate amount of organic solvent methanol (the molar ratio of 3-aminopropyltrimethoxysilane to salicylaldehyde The molar ratio of 3-aminopropyltrimethoxysilane to anhydrous sodium sulfate is 1:1, 3:1), under reflux conditions, constant temperature reaction for 12 hours, after the reaction, naturally cool to room temperature, filter to obtain organic a mixture of ligands (II);
[0074] S2: Under nitrogen atmosphere, the mixture and iron acetate (Fe(CH 3 COO) 2 ) into an appropriate amount of methanol (the molar ratio of iron acetate to the organic ligand (II) in the mixture is 2:1), and react at a constant temperature at room temperature for 12 hours. After the reaction is completed, add an appropriate amount of ether to the reaction mixture, Set a...
Embodiment 3
[0079] Example 3: Preparation of carbon nanotube-supported metal ethylene oligomerization catalyst
[0080] S1: Under a nitrogen atmosphere, add 3-aminopropyltrimethoxysilane, salicylaldehyde and anhydrous sodium sulfate to an appropriate amount of organic solvent ethanol (the molar ratio of 3-aminopropyltrimethoxysilane to salicylaldehyde The molar ratio of 3-aminopropyltrimethoxysilane to anhydrous sodium sulfate is 1:3, 2:1), under reflux conditions, constant temperature reaction for 24 hours, after the reaction, naturally cool to room temperature, filter, and obtain organic a mixture of ligands (II);
[0081] S2: Under nitrogen atmosphere, the mixture and cobalt acetate (Co(CH 3 COO) 2 ) into an appropriate amount of ethanol (the molar ratio of cobalt acetate to the organic ligand (II) in the mixture is 1.2:1), and react at a constant temperature at room temperature for 24 hours. After the reaction is completed, add an appropriate amount of ether to the reaction mixture,...
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