Diethylenetriamine derivatives, and preparation method and application thereof

A technology of diethylenetriamine and derivatives, which is applied in the preparation of cyanide reaction, the preparation of organic compounds, chemical instruments and methods, etc., can solve the problems of limited water flow and large salt flow, and achieve large water flux and high salt flow. Low flow, solve the effect of large salt flow

Inactive Publication Date: 2015-02-25
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the above defects or improvement needs of the prior art, the present invention provides a diethylenetriamine derivative, its preparation method and application, the purpose of which is to absorb liquid, thus solving the technical problems of limited water flow and large salt flow in the existing forward osmosis drawing liquid

Method used

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  • Diethylenetriamine derivatives, and preparation method and application thereof
  • Diethylenetriamine derivatives, and preparation method and application thereof
  • Diethylenetriamine derivatives, and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0051] A diethylenetriamine derivative is a diethylenetriamine derivative and sodium salt thereof shown in chemical formula (1) (see Table 1), prepared according to the following method:

[0052] (1) Under nitrogen atmosphere, mix diethylenetriamine, methyl acrylate and methanol evenly, keep the temperature of the mixture below 5°C, so that the molar ratio of diethylenetriamine, methyl acrylate and methanol is 1:10:12 , to obtain a mixed solution of diethylenetriamine and methyl acrylate. The temperature of the obtained mixed solution of diethylenetriamine and methyl acrylate was raised to 25°C, and reacted in the dark for 5 days, so that the mixed solution underwent Michael addition reaction, and the excess methyl acrylate and methanol solvent were removed by distillation under reduced pressure to obtain Mike Addition reaction product.

[0053] (2) The Mike addition reaction product obtained in step (1) is mixed with an aqueous solution of sodium hydroxide, so that the molar...

Embodiment 2

[0058] A diethylenetriamine derivative is a diethylenetriamine derivative and sodium salt thereof shown in chemical formula (2) (see Table 1), prepared according to the following method:

[0059] (1) Under a nitrogen atmosphere, mix ethylenediamine, methyl acrylate and methanol evenly, keep the temperature of the mixture below 5°C, so that the molar ratio of ethylenediamine, methyl acrylate and methanol is 1:8:12, and obtain A mixed solution of ethylenediamine and methyl acrylate. The obtained mixed solution of ethylenediamine and methyl acrylate was heated up to 20° C., and reacted in the dark for 1 day to cause the Michael addition reaction to occur in the mixed solution, and the excess methyl acrylate and methanol solvent were removed by distillation under reduced pressure to obtain the Michael addition reaction. into a reaction product.

[0060] (2) The Mike addition reaction product obtained in step (1) is mixed with an aqueous solution of sodium hydroxide so that the mo...

Embodiment 3

[0065] A diethylenetriamine derivative is a diethylenetriamine derivative and sodium salt thereof shown in chemical formula (3) (see Table 1), prepared according to the following method:

[0066] (1) Under nitrogen environment, mix triethylenetetramine, methyl acrylate and methanol evenly, keep the temperature of the mixture below 5°C, so that the molar ratio of triethylenetetramine, methyl acrylate and methanol is 1:12:10 , to obtain a mixed solution of triethylenetetramine and methyl acrylate. The temperature of the obtained mixed solution of triethylenetetramine and methyl acrylate was raised to 30° C., and reacted in the dark for 7 days to cause the Mike addition reaction to occur in the mixed solution, and the excess methyl acrylate and methanol solvents were distilled off under reduced pressure to obtain Mike Addition reaction product.

[0067] (2) The Mike addition reaction product obtained in step (1) is mixed with an aqueous solution of potassium hydroxide, so that t...

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Abstract

The invention discloses diethylenetriamine derivatives, and a preparation method and application thereof. The diethylenetriamine derivatives are acids or soluble salts disclosed as chemical formula (I), wherein n is 0, 1, 2 or 3. The preparation method is implemented by carrying out Michael addition reaction on framework molecule and methyl acrylate. The diethylenetriamine derivatives disclosed by the invention are used for preparing a forward osmosis drawing solution, have the advantages of high safety, no toxicity, high water flux and low salt flowage, and greatly lower the energy consumption cost.

Description

technical field [0001] The invention belongs to the technical field of forward osmosis, and more specifically relates to a diethylenetriamine derivative, its preparation method and application. Background technique [0002] The shortage of water resources has affected the normal life of human beings. The future peaceful development of the world is closely related to the supply of fresh water. Therefore, the low-cost realization of sewage purification and seawater desalination by osmotic membrane separation technology has gradually attracted the attention of countries all over the world. Forward osmosis technology was born under this background. Forward osmosis (FO) is a spontaneous physical phenomenon that exists widely in nature. The draw liquid provides osmotic driving pressure to make water flow from the high water chemical potential (ie lower osmotic pressure) side through the selective permeability membrane to the low water chemical potential. (ie higher osmotic press...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C229/16C07C227/18C02F1/44
Inventor 王艳龙庆武
Owner HUAZHONG UNIV OF SCI & TECH
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