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Hydrophobic deep eutectic solvent based on lidocaine and its preparation method and application

A deep eutectic solvent and lidocaine technology, which is applied in the preparation of imino compounds, liquid solution solvent extraction, organic chemistry, etc., can solve the problems of no discovery, achieve stable performance, simple synthesis, and the best extraction effect

Active Publication Date: 2021-06-25
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] So far, we have not found that n-octyl p-hydroxybenzoate is used as a hydrogen bond donor, and lidocaine is a hydrophobic deep eutectic solvent synthesized by a hydrogen bond acceptor and used for rhodamine B and rhodamine B. Reports on separation and enrichment of other large cations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The molar ratio of 1: 0.25 to 3 is respectively weighted with orthodontacine and hydroxybenzoate, and then the mixture is placed in a round bottom flask, and the mixture is stirred at 40 to 80 ° C to form uniform clarification. Transparent liquid, ie hydrophobic low-molten solvent.

Embodiment 2

[0027] The hydrophobic low-molten solvent synthesized in Example 1 was weighed, respectively, in a quadrant of 10 mg / L in aqueous solution. Under the conditions of the non-adjustment of the pH value of the solution, the content of the aqueous phase container B was measured after the vortex was centrifuged. According to the measurement results, all different molar ratio of hydrophobic hybrid solvents were extracted on Rhodamin B, and the molar ratio of hydrophobic low-molten solvent is neutralcaine and hydroxybenzoate. At 1: 2, it was as high as 99% of the Rhodamine B aqueous solution.

Embodiment 3

[0029] The hydrophobic low-molten solvent synthesized in Example 1 was weighed, respectively, in a methyl water solution having a concentration of 10 mg / L. The content of methyl purple in the aqueous phase was measured after the centrifugation of the water phase was measured after the solution pH value was not adjusted. According to the measurement results, all different molar ratio of hydrophobic low-melting solvents have extraction effect on methylfricine, and the molar ratio of molar ratio of hydroxybenzoate is the molar ratio of hydrophobenzoate. At 1: 1, the extraction rate of methylvinet in the methyl water solution was as high as 97%.

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PUM

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Abstract

The invention discloses a lidocaine-based hydrophobic deep eutectic solvent, a preparation method and application thereof, and belongs to the technical field of extraction, separation and enrichment of large cationic compounds. The main points of the technical scheme of the present invention are: a hydrophobic deep eutectic solvent based on lidocaine, which uses lidocaine as a hydrogen bond acceptor and n-octyl p-hydroxybenzoate as a hydrogen bond The donor is synthesized according to the molar ratio of 1:0.25~3. The invention also specifically discloses the preparation method of the lidocaine-based hydrophobic deep eutectic solvent and its application in extracting rhodamine B, methyl violet or / and malachite green in aqueous solution. When the hydrophobic deep eutectic solvent prepared by the invention is used as an extractant, it has the advantages of simple synthesis, stable performance, low toxicity, high extraction efficiency and the like.

Description

Technical field [0001] The present invention belongs to the field of extraction and separation of large cation compounds, and in particular, the present invention relates to a hydrophobic low-molten solvent based on lidocaine and its preparation methods and applications. Background technique [0002] The low-molten solvent generally refers to a mixture of two or more substances formed by a hydrogen bond force, a mixture having a mixture of various constituent components and at room temperature. The low-molten solvent is a new type of green solvent, which is not only the advantages of ionic liquid vapor pressure, good conductivity, low melting point, strong heat stability, etc., but also low price, simple preparation, no need Further purification and other advantages. Due to its superior physical chemical properties, the low-melting solvent is applied in the field of electrochemical reactions, organic synthesis, functional materials, extraction separation and other fields. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D11/04C07D311/84C07C249/02C07C251/30
CPCB01D11/04C07C249/02C07D311/84C07C251/30
Inventor 樊静时悦悦吴甜杨西通杜萌萌李铁梅朱文娟靳平宁师东阳付元奇
Owner HENAN NORMAL UNIV
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