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Surfactant-MOF composite material and preparation method thereof

A technology of surfactants and composite materials, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of poor solubility, inability to put into use in large quantities, and low utilization rate, so as to achieve simple production process and improve oil recovery The effect of efficiency and low cost

Active Publication Date: 2021-11-02
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, some biosurfactants cannot be used in large quantities due to problems such as poor solubility and low utilization rate.

Method used

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  • Surfactant-MOF composite material and preparation method thereof
  • Surfactant-MOF composite material and preparation method thereof
  • Surfactant-MOF composite material and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0033] The present invention also provides a kind of preparation method of above-mentioned surfactant-MOF composite material, it comprises the following steps:

[0034] Step S1, adding the metal-organic framework into water, stirring and fully dissolving;

[0035] In step S2, the surfactant is added to the solution in which the metal-organic framework is dissolved, stirred and fully dissolved, so that the metal-organic framework embeds the surfactant, and a liquid surfactant-MOF composite material is obtained.

[0036] Preferably, the water is pure water, and the pure water does not contain impurities, so that the quality of the obtained surfactant-MOF composite material is better.

[0037] In the above step S2, preferably, at room temperature, stir at a constant speed of 1000-1200 rpm for 20-30 minutes, so that the surfactant can be quickly and completely dissolved under the premise of better effect.

[0038] Further preferably, the preparation method also includes the follo...

Embodiment 1

[0042] Example 1 Preparation of Surfactant-MOF Composite Material

[0043] This embodiment takes the sophorolipid surfactant (also referred to as sophorolipid for short) as the main research object, specifically:

[0044] (I) Take 100mgMOF+40mL pure water and fully dissolve it in a 100mL Erlenmeyer flask;

[0045] (II) Add 100 mg of surfactant into the Erlenmeyer flask, stir magnetically at 37°C for about 20-30 minutes to completely dissolve the sophoryl ester surfactant, and the prepared product is a sophoryl ester-MOF composite material.

[0046] The composite material prepared in Example 1 can be used as a surfactant, has a good oil displacement effect, and is suitable for the exploitation of crude oil and the treatment of oil pollution.

[0047] 1. The effect of the addition of MOF on the critical micelle concentration of sophorolipids, the relevant experiments and data are as follows:

[0048]At room temperature, take 0.0025g / L, 0.005g / L, 0.0125g / L, 0.025g / L, 0.05g / L, 0...

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Abstract

The invention relates to a surfactant-MOF composite material and a preparation method thereof, the raw materials of the surfactant-MOF composite material comprise a metal organic framework and a surfactant, the weight ratio of the metal organic framework to the surfactant is 1: 0.01-5, the metal organic framework is prepared from natural biodegradable cyclodextrin and alkali metal hydroxide, and the surfactant is a microbial natural fermentation product; the preparation method of the surfactant-MOF composite material comprises the following steps: S1, adding a metal organic framework into water, and stirring and fully dissolving the metal organic framework; and S2, adding a surfactant into the solution dissolved with the metal organic framework, stirring and fully dissolving, so that the surfactant is embedded in the metal organic framework, and the liquid surfactant-MOF composite material is obtained. According to the surfactant-MOF composite material and the preparation method thereof, the surfactant-MOF composite material not only has a good oil displacement effect, but also has no pollution to the environment, in addition, the raw materials are low in cost, the preparation method is simple and easy to implement, and the surfactant-MOF composite material can be widely produced on a large scale.

Description

technical field [0001] The invention relates to the technical field of petroleum extraction additives, in particular to a surfactant-MOF composite material and a preparation method thereof. Background technique [0002] Petroleum is the most important raw material in modern industrial society. Due to the limited petroleum resources, surfactants are often added in the later stage of petroleum exploitation to increase the flow capacity of crude oil and further enhance the recovery of crude oil. [0003] At present, widely used surfactants include anionic sulfonates and sulfates, cationic guar gum, silicone oil, etc., which belong to chemical surfactants and have a high degree of environmental pollution. Surfactants are poured into the ground during oil extraction, which can cause great harm to the local environment. [0004] Microbial surfactants such as sophorolipids, rhamnolipids, trehalolipids, and glycerides have good biocompatibility and are a class of degradable surfact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584C09K8/588C09K8/60
CPCC09K8/584C09K8/588C09K8/602
Inventor 黄和徐晴李颖风张婷婷薛锋宋萍
Owner NANJING NORMAL UNIVERSITY
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