Functionalized ionic liquid straight-chain primary amine phosphinate homologue and its preparation method and use

A technology of chain primary amine phosphinate and ionic liquid is applied in the field of functionalized ionic liquid linear primary amine phosphinate homologue and its preparation, which can solve the difficulty of improving harmless treatment and the difficulty of post-treatment. , occupational hazards of workers, etc., to achieve the effect of sustainable development, high recovery rate, low volatility and low toxicity

Active Publication Date: 2021-01-29
ANYANG NORMAL UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem addressed by the present invention is: in the prior art, for the treatment of waste lithium-ion batteries and the recovery of valuable metals therein, organic extractants are mostly used, and organic extractants are volatile during use, which is likely to cause environmental pollution or cause harm to workers. Occupational hazards also make post-processing difficult and increase the difficulty of harmless processing

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  • Functionalized ionic liquid straight-chain primary amine phosphinate homologue and its preparation method and use
  • Functionalized ionic liquid straight-chain primary amine phosphinate homologue and its preparation method and use
  • Functionalized ionic liquid straight-chain primary amine phosphinate homologue and its preparation method and use

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preparation example Construction

[0049]The present invention also provides a method for preparing the above functionalized ionic liquid linear primary amine phosphinate homologue, which includes the following steps:

[0050](1) The linear primary amine and Cyanex272 are respectively dissolved in the same reaction medium, and the volume of the reaction medium used in the two is the same;

[0051](2) Pour the reaction medium with Cyanex 272 dissolved in a three-necked flask, and then slowly add the reaction medium with linear primary amines dissolved in a constant pressure funnel into the three-necked flask for 15 to 35 minutes; The reflux reaction time at 80-100°C is 50-180min, and the reaction is completed to obtain the crude functionalized ionic liquid linear primary amine phosphinate homologue;

[0052]The adding time can be any time between 15 to 35 minutes, preferably 25 minutes; the reaction temperature is determined according to the reaction medium used, preferably 80 to 100 °C; the reaction time can be within 50 to 1...

Embodiment 1

[0067]A preparation method of functionalized ionic liquid linear primary amine phosphinate homologue includes the following steps:

[0068](1) Dissolve 1g of n-butylamine and 3.6g of Cyanex272 in the same reaction medium with isopropanol respectively, and the volume of the reaction medium used for the two is the same;

[0069](2) Pour the isopropanol solution dissolved in Cyanex 272 into the three-necked flask, and then slowly add the isopropanol solution dissolved in n-butylamine into the three-necked flask using a constant pressure funnel. The addition time is 25 minutes. After the addition is complete, Reflux the reaction at 80-100°C for 50-60 minutes, and complete the reaction to obtain the crude functionalized ionic liquid linear primary amine phosphinate homolog;

[0070](3) The crude functionalized ionic liquid linear primary amine phosphinate homologue obtained in step (2) is extracted with the extractant petroleum ether, and then washed with deionized water for more than 3 times aft...

Embodiment 2

[0072]A preparation method of functionalized ionic liquid linear primary amine phosphinate homologue includes the following steps:

[0073](1) 2g n-hexylamine and 5.2g Cyanex272 are respectively dissolved in petroleum ether in the same reaction medium, and the volume of the petroleum ether used in the reaction medium is the same;

[0074](2) Pour the petroleum ether solution dissolved with Cyanex 272 into the three-necked flask, and then slowly add the petroleum ether solution with n-hexylamine dissolved in the constant-pressure funnel into the three-necked flask. The addition time is 25 minutes. The reflux reaction was conducted at 100°C for 60-70 minutes, and the crude functionalized ionic liquid linear primary amine phosphinate homologue was obtained after the reaction was completed;

[0075](3) The crude product of the functionalized ionic liquid linear primary amine phosphinate homologue obtained in step (2) is extracted with the extractant petroleum ether. After extraction, it is washe...

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Abstract

The invention discloses a functional ionic liquid straight-chain primary amine phosphinate homologue as well as a preparation method and application thereof. The method adopts the same reaction medium to dissolve straight-chain primary amine and Cyanex272 respectively, then mix the two solutions for reaction, and the reaction is completed to obtain the crude product of functionalized ionic liquid straight-chain primary amine phosphinate homologue; then the crude product is extracted , washing, dehydration, and rotary evaporation to obtain purified functionalized ionic liquid straight-chain primary amine phosphinate homologues. The substance can selectively extract and recover cobalt in waste ion batteries, so as to realize environment-friendly extraction and recovery of valuable metals in solid waste resources. It overcomes the problems of volatility and high toxicity of the current organic extractants, and provides a new technical route for the sustainable and environmentally friendly recycling of waste lithium-ion batteries; expands the application fields of "green" solvents and functionalized ionic liquids, and realizes the Sustainable development in the field of solid waste resources.

Description

Technical field[0001]The invention belongs to the field of valuable metal resource recovery in environmental engineering, and specifically relates to a functionalized ionic liquid linear primary amine phosphinate homologue and a preparation method and application thereof.Background technique[0002]According to statistics, by 2020, the number and quality of used lithium-ion batteries in the world will exceed 25 billion and 500,000 tons. If these used lithium-ion batteries cannot be recycled or reused, they will be discarded and accumulated. It will have a serious impact on the environment and cause a waste of resources. Reasonable recycling and utilization of waste lithium-ion batteries can not only avoid secondary pollution to the environment, but also achieve sustainable recycling of valuable metals, which has significant environmental and economic benefits.[0003]The cobalt content in the ternary cathode material of waste batteries can reach about 4 times the total content of nickel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/30C07C211/03C07C209/00C22B7/00C22B3/38C22B23/00B01D11/02
CPCB01D11/0288C07C211/03C07F9/30C22B7/006C22B7/007C22B23/0415C22B3/3842Y02P10/20
Inventor 景晓华杜记民王晓瑾李志敏王焕
Owner ANYANG NORMAL UNIV
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