A Composite Solid Phase Extraction Column and Its Application in the Separation of Alkanes/Aromatics Mixtures
A technology of solid-phase extraction column and stationary phase, which is applied in the field of composite solid-phase extraction column and its application in the separation of alkane/aromatic mixture, which can solve the problems of low combustion efficiency of gasoline, impact on gasoline, content limitation, etc.
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Embodiment 1
[0031] (1) Dissolve 1g of P123 in 10ml of acetic acid, then add 5ml of 25wt% ammonia water dropwise under ice bath conditions, and finally add 2ml of ethyl orthosilicate dropwise under vigorous stirring, and continue stirring vigorously until the solution becomes clear , finally transfer the solution to a hydrothermal kettle, heat and react at 55°C for 1h, after the reaction is completed, age at 55°C for 5d, and finally place the wet gel obtained by aging in a mixed solution of water and ethanol for solvent exchange and dry After placing it in the air atmosphere in the muffle furnace, first raise the temperature to 400°C at a heating rate of 1°C / min, heat preservation treatment for 10 minutes, then raise the temperature to 600°C at a heating rate of 7°C / min, heat preservation treatment for 10 minutes, and finally heat it with 1 The heating rate of ℃ / min was raised to 800 ℃, and the heat preservation treatment was carried out for 1 hour to obtain porous silica particles with hie...
Embodiment 2
[0039] (1) Dissolve 2g of P123 in 10ml of acetic acid, then add 5ml of 25wt% ammonia water dropwise under ice bath conditions, and finally add 3ml of tetraethyl orthosilicate dropwise under vigorous stirring, and continue stirring vigorously until the solution becomes clear , finally transfer the solution to a hydrothermal kettle, heat and react at 65°C for 3h, after the reaction is completed, age at 65°C for 6d, and finally put the wet gel obtained from aging into a mixed solution of water and ethanol for solvent exchange and dry After placing it in the air atmosphere in the muffle furnace, first raise the temperature to 400°C at a heating rate of 1°C / min, heat preservation treatment for 10 minutes, then raise the temperature to 600°C at a heating rate of 7°C / min, heat preservation treatment for 10 minutes, and finally heat it with 1 The heating rate of ℃ / min was raised to 800 ℃, and the heat preservation treatment was carried out for 1 hour to obtain porous silica particles w...
Embodiment 3
[0047] (1) Dissolve 1.5g of P123 in 10ml of acetic acid, then add 5ml of 25wt% ammonia water dropwise under ice bath conditions, and finally add 2ml of tetraethyl orthosilicate dropwise under vigorous stirring, and continue stirring vigorously until the solution becomes Clarify, finally transfer the solution to a hydrothermal kettle, heat and react at 60°C for 1h, after the reaction is completed, age at 60°C for 5d, and finally place the wet gel obtained after aging in a mixed solution of water and ethanol for solvent exchange, After drying, put it in the air atmosphere in the muffle furnace, firstly raise the temperature to 400°C at a heating rate of 1°C / min, heat preservation treatment for 10 minutes, then raise the temperature to 600°C at a heating rate of 7°C / min, heat preservation treatment for 10 minutes, and finally Raise the temperature to 800°C at a heating rate of 1°C / min, and heat preservation for 1 hour to obtain porous silica particles with a hierarchical pore stru...
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