Tetramethyl hexaalkyl triethylene tetraammonium salt, and preparation method and application thereof
A technology of tetramethylhexaalkyltriethylene and tetraammonium salt, which is applied in the field of fine chemical industry and solvent extraction, can solve the problems of small extraction saturation capacity, long and short phase separation time, and achieve easy recovery and separation The effect of short phase time and no corrosion of equipment
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Embodiment 1
[0037] Add 0.5 mol of anhydrous sodium carbonate, 50 mL of absolute ethanol and 0.1 mol of triethylenetetramine into a three-necked bottle with a capacity of 500 mL, put the three-necked bottle on the stirrer, start the stirrer at the same time, and heat the water bath to 75 °C, slowly dropwise add 0.9 mol of n-bromohexane and 50 mL of anhydrous ethanol mixture therein, and the dropwise addition is completed within 4 hours. After the dropwise addition was completed and reacted for 24 hours, 0.9 mol of sodium hydroxide solid was added thereto. After reacting for 3 hours, the stirring was stopped, cooled, and filtered. The organic phase obtained by filtration was subjected to vacuum distillation, and the obtained substance was separated into two layers. The upper layer is light red liquid, and the lower layer is brown-black opaque liquid. Add 200mL of 10% sodium carbonate solution to the distilled product to wash the product, wash three times, and after standing, separate the o...
Embodiment 2
[0040] Add 0.5 mol of anhydrous potassium carbonate, 50 mL of absolute ethanol and 0.1 mol of triethylenetetramine into a three-necked bottle with a capacity of 500 mL, put the three-necked bottle on the stirrer, start the stirrer at the same time, and heat the oil bath to At 120°C, slowly add 0.9 mol of n-octane bromide and 50 mL of absolute ethanol dropwise therein, and the dropwise addition is completed within 4 hours. After the dropwise addition was completed and reacted for 10 h, 0.9 mol of sodium hydroxide solid was added thereto, and after reacting for 4 h, the stirring was stopped, cooled, and filtered. The organic phase obtained by filtration was subjected to vacuum distillation, and the obtained substance was separated into two layers. The upper layer is light red liquid, and the lower layer is brown-black opaque liquid. Add 200 mL of potassium carbonate solution with a mass fraction of 10% to the distilled product to wash the product three times, and after standing...
Embodiment 3
[0043] Add 0.5 mol of anhydrous potassium carbonate, 50 mL of absolute ethanol and 0.1 mol of triethylenetetramine into a three-necked bottle with a capacity of 500 mL, put the three-necked bottle on the stirrer, start the stirrer at the same time, and heat the oil bath to At 100°C, slowly add 0.9 mol of n-octane bromide and 50 mL of absolute ethanol dropwise therein, and the dropwise addition is completed within 4 hours. After the dropwise addition was completed and reacted for 14 hours, 0.9 mol of sodium hydroxide solid was added thereto, and after reacting for 6 hours, the stirring was stopped, cooled, and filtered. The organic phase obtained by filtration was subjected to vacuum distillation, and the obtained substance was separated into two layers. The upper layer is light red liquid, and the lower layer is brown-black opaque liquid. Add 200 mL of potassium carbonate solution with a mass fraction of 10% to the distilled product to wash the product three times, and after ...
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