Functionalized ionic liquid straight-chain primary amine phosphinate homolog, and preparation method and application thereof

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: 2020-01-24
ANYANG NORMAL UNIV
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  • Abstract
  • 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 homolog, and preparation method and application thereof
  • Functionalized ionic liquid straight-chain primary amine phosphinate homolog, and preparation method and application thereof
  • Functionalized ionic liquid straight-chain primary amine phosphinate homolog, and preparation method and application thereof

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preparation example Construction

[0049] The present invention also provides a preparation method for the above-mentioned functionalized ionic liquid straight-chain primary amine phosphinate homolog, comprising the following steps:

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

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

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

Embodiment 1

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

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

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

[0070] (3) The functionalized ionic liquid straight-chain primary amine phosphinate homologue crude product obtained in step (2) is extracted using the extractant sherwood oil, washed with d...

Embodiment 2

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

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

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

[0075] (3) The functionalized ionic liquid straight-chain primary amine phosphinate homologue crude product obtained in step (2) is extracted using the extractant sherwood oil, washed several times with d...

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Abstract

The invention discloses a functionalized ionic liquid straight-chain primary amine phosphinate homolog, and a preparation method and application thereof. The method comprises the following steps: respectively dissolving straight-chain primary amine and Cyanex272 by adopting the same reaction medium, then mixing the two solutions for a reaction to obtain a crude product of the functionalized ionicliquid straight-chain primary amine phosphinate homolog; and subjecting the crude product to extracting, washing, dehydrating and rotary evaporation to obtain the purified functionalized ionic liquidstraight-chain primary amine phosphinate homolog. The homolog can selectively extract and recover cobalt in waste ion batteries, so valuable metals in solid waste resources are extracted and recoveredin an environment-friendly manner. The problems of high volatility and high toxicity of the existing organic extractant are solved, and a new technical route is provided for sustainable environment-friendly recovery of the waste lithium ion batteries; and the application fields of the green solvent and the functionalized ionic liquid are expanded, and sustainable development in the field of wastesolid waste resources is realized.

Description

technical field [0001] The invention belongs to the field of recovery of valuable metal resources in environmental engineering, and in particular relates to a functionalized ionic liquid straight-chain primary amine phosphinate homologue as well as its preparation method and application. Background technique [0002] According to statistics, by 2020, the quantity and quality of waste lithium-ion batteries in the world will exceed 25 billion and 500,000 tons. It will cause serious impact on the environment and cause waste of resources. Reasonable recycling of waste lithium-ion batteries can not only avoid its secondary pollution to the environment, but also realize sustainable recycling of valuable metals, which has significant environmental and economic benefits. [0003] The cobalt content in the ternary positive electrode material of waste batteries can reach about 4 times the total content of nickel and lithium. Therefore, the efficient recovery of cobalt in waste lithiu...

Claims

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Application Information

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Patent Type & Authority Applications(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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