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Composite solid-phase extraction column and application thereof in alkane/aromatic hydrocarbon mixture separation

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 gasoline combustion efficiency, content limitation, environmental pollution, etc., and achieve improved separation Good performance, stable separation performance, good thermal stability

Active Publication Date: 2021-02-26
连云港鹏辰特种新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the higher boiling point of aromatic hydrocarbons will affect the boiling point of gasoline to a certain extent, and its content has been limited
On the other hand, most aromatic hydrocarbons are carcinogenic and their combustion products lead to the emission of greenhouse gases and the formation of soot in diesel engines
At the same time, when gasoline is burned, the greater the content of aromatic hydrocarbons, the lower the combustion efficiency of gasoline and the more serious the pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a composite solid-phase extraction column which comprises a first-stage solid-phase extraction column and a second-stage solid-phase extraction column connected with the first-stage solid-phase extraction column in series, wherein a stationary phase in the first-stage solid-phase extraction column is a first porous composite filler taking porous aluminum oxide as a shell and porous silicon oxide as a core; and a stationary phase in the second-stage solid-phase extraction column is a second porous composite filler which takes porous silicon oxide as a core and a Co-MOF nano material as a shell and is loaded with silver nanoparticles. The filler in the solid-phase extraction column is good in adsorption selectivity, excellent in stability and good in separation efficiency.

Description

technical field [0001] The invention relates to the field of hydrocarbon mixture separation, in particular to a composite solid-phase extraction column and its application in the separation of alkane / aromatic mixture. Background technique [0002] In recent years, with the continuous development of chemical and petrochemical industries, the demand for aromatic hydrocarbon products has been increasing. Aromatic hydrocarbons are raw materials for many polymer products, plastics and fuels. At the same time, with the continuous strengthening of people's health awareness, the quality indicators of petroleum products have also been continuously improved. In terms of vehicle fuel, low aromatic content and high octane number have always been the development direction of high-quality gasoline. On the one hand, the higher boiling point of aromatic hydrocarbons will affect the boiling point of gasoline to a certain extent, and its content has been limited. On the other hand, most ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/22B01J20/281C07C15/06C07C9/15C07C7/12C07C7/00
CPCB01D15/22B01J20/281C07C7/005C07C7/12C07C15/06C07C9/15
Inventor 江晓龙谈勇谈俊
Owner 连云港鹏辰特种新材料有限公司
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