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Preparation method of multifunctional integrated Pickering emulsion

A multi-functional, emulsion technology, applied in the direction of chemical instruments and methods, mixing methods, chemical/physical processes, etc., can solve the problems affecting the effect of the compound system and oil displacement efficiency, "chromatographic separation, stable failure, etc., and achieve the preparation method Simple and convenient, avoid oil-water phase, good emulsifying effect

Inactive Publication Date: 2020-07-28
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the above literature, some compound systems of surfactants, polymers and nanoparticles are mostly used, and this multi-component compound compound will have the problem of "chromatographic separation" or stable failure in the application process. This is because the composition of the surfactant or polymer itself determines its adsorption on rocks. During the compounding process, different surfactants have different adsorption effects on rocks, which affects the effect of the compound system and oil displacement efficiency.

Method used

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  • Preparation method of multifunctional integrated Pickering emulsion
  • Preparation method of multifunctional integrated Pickering emulsion
  • Preparation method of multifunctional integrated Pickering emulsion

Examples

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Embodiment 1

[0068] The present embodiment provides a kind of preparation method of multifunctional integrated Pickering granular emulsifier, comprising the following steps:

[0069] 0.5g fumed silica particles Aerosil380 (primary particle size is 7nm, BET specific surface area is 380m 2 / g, Evonik Chemical Co., Ltd., Aerosil380, AR) dried in a vacuum oven at a temperature of 100°C for 1 hour, added to a 50-mL round-bottomed flask together with 20 mL of anhydrous toluene, and ultrasonicated at room temperature and at a frequency of 50 kHz for 10 minutes Make it disperse evenly to obtain dispersion liquid B, then add 0.5g diethylenetriaminopropyltrimethoxysilane (Shanghai McLean Biochemical Technology Co., Ltd., purity is 95wt%) and 0.5g n-dodecane in dispersion liquid B Trimethoxysilane (Shanghai Bailingwei Chemical Technology Co., Ltd., with a purity of 95wt%) was used to obtain a reaction solution, and the reaction solution was reacted for 12 hours in an oil bath at a temperature of 110°...

Embodiment 2

[0072] The present embodiment provides a kind of preparation method of multifunctional integrated Pickering granular emulsifier, comprising the following steps:

[0073] 0.5g of fumed silica particles Aerosil200 (primary particle size is 14nm, BET specific surface area is 200m 2 / g, Evonik Chemical Co., Ltd., Aerosil200, AR) was dried in a vacuum oven at a temperature of 110 °C for 1 hour, added to a 50 mL round-bottomed flask together with 20 mL of anhydrous toluene, and ultrasonicated at room temperature and at a frequency of 50 kHz for 10 minutes Make it disperse evenly to obtain dispersion liquid B, then add 0.5g divinyltriaminopropyl trimethoxysilane (Shanghai Titan Science and Technology Co., Ltd., purity is 95wt%) and 0.1g n-hexadecyl to dispersion liquid B Trimethoxysilane (Shanghai Bailingwei Chemical Technology Co., Ltd., with a purity of 95wt%) was used to obtain a reaction solution, which was reacted for 12 hours in an oil bath at a temperature of 110° C. under a n...

Embodiment 3

[0076] The present embodiment provides a kind of preparation method of multifunctional integrated Pickering granular emulsifier, comprising the following steps:

[0077] 0.5g of fumed silica particles Aerosil50 (primary particle size is 20nm, BET specific surface area is 50m 2 / g, Evonik Chemical Co., Ltd., Aerosil50, AR) was dried in a vacuum oven at a temperature of 110 °C for 1 hour, added to a 50 mL round-bottomed flask together with 20 mL of anhydrous toluene, and ultrasonicated at room temperature and at a frequency of 50 kHz for 10 minutes Make it disperse evenly to obtain dispersion liquid B, then add 0.9g divinyltriaminopropyl trimethoxysilane (Shanghai McLean Biochemical Technology Co., Ltd., purity is 95wt%) and 0.05g n-octyl trimethoxysilane to dispersion liquid B Oxysilane (Shanghai McLean Biochemical Technology Co., Ltd., with a purity of 97wt%) was used to obtain a reaction solution, and the reaction solution was reacted for 2 hours in an oil bath at a temperatur...

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Abstract

The invention discloses a preparation method of a multifunctional integrated Pickering emulsion, comprising the following steps of: mixing and dispersing a multifunctional integrated Pickering particle emulsifier and a solvent A to obtain a dispersion liquid A; mixing the dispersion liquid A with an oil phase, and preparing a multifunctional integrated Pickering emulsion in an emulsification manner, wherein the multifunctional integrated Pickering particle emulsifier is prepared from fumed silica particles, an amino silane coupling agent and a hydrophobic alkyl silane coupling agent in a massratio of 5: (2-9): (0.5-5). The multifunctional integrated Pickering emulsion prepared by the preparation method has good long-term stability and CO2-responsive emulsification-demulsification circularity, and emulsification, stabilization and CO2 responsiveness are integrated into a whole, so that a chromatographic separation effect possibly occurring in the storage and use processes is avoided.

Description

technical field [0001] The invention relates to the technical field of preparation of fine chemical products. More specifically, it relates to a preparation method of a multifunctional integrated Pickering emulsion. Background technique [0002] Pickering emulsion is an emulsion formed by using solid particles adsorbed on the liquid-liquid two-phase interface to stabilize two immiscible liquids. Compared with traditional surfactants, Pickering emulsion is more stable. Pickering emulsion has low toxicity and high stability. The advantages of safety, low cost and environmental friendliness make it widely used in many fields such as cosmetics, food, crude oil extraction, sewage treatment and biomedicine. [0003] Generally, different types of Pickering emulsions can be prepared in a manner similar to the preparation of classic surfactant emulsions; that is, hydrophobic or hydrophilic particles are first dispersed in an oil or water phase, and then the corresponding water or oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F3/08
CPCB01F23/4105
Inventor 彭宝亮韩霞赵双良罗健辉刘洪来
Owner PETROCHINA CO LTD
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