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Novel extracting agent for efficiently enriching micro nickel ions in environment

A technology of nickel ion and extractant, applied in the field of extractant, can solve the problem of difficult enrichment of trace nickel ions, achieve good extraction performance, easy preparation, and good stability

Active Publication Date: 2017-04-19
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the current extractant is difficult to enrich trace nickel ions

Method used

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  • Novel extracting agent for efficiently enriching micro nickel ions in environment
  • Novel extracting agent for efficiently enriching micro nickel ions in environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take the asymmetric N-methyl-N-butylamine synthetic extractant as an example: in the first step, 58g of ethylenediaminetetraacetic acid is dehydrated with acetic anhydride at 55°C to generate 45.8g of its anhydride, and the yield is stable at about 90%. . In the second step, 25g of ethylenediaminetetraacetic dianhydride and 17g of N-methyl-N-butylamine synthesize the extractant di-N-(N-methyl-N-butylacetyl) in DMF in the presence of DMAP - 33.6g of ethylenediaminediacetic acid, the reaction temperature is 70-80°C, the reaction time is 12 hours, and the average yield of the final synthesis is about 80%.

Embodiment 2

[0025] Take the asymmetric N-methyl-N-octylamine synthetic extractant as an example: the first step is the same as in Example 1. In the second step, 25g ethylenediaminetetraacetic dianhydride and 27.9gN-methyl-N-octylamine synthesize the extractant di-N-(N-methyl-N-octylacetyl in DMF in the presence of DMAP )-42.4g of ethylenediaminediacetic acid, the reaction temperature is 70-80°C, the reaction time is 12 hours, and the average yield of the final synthesis is about 80%.

Embodiment 3

[0027] Take the asymmetric N-methyl-N-laurylamine synthetic extractant as an example: the first step is the same as in Example 1. In the second step, 25g ethylenediaminetetraacetic dianhydride and 38.9gN-methyl-N-laurylamine synthesize the extractant di-N-(N-methyl-N-lauryl acetyl in DMF in the presence of DMAP )-51.2g of ethylenediaminediacetic acid, the reaction temperature is 70-80°C, the reaction time is 12 hours, and the average yield of the final synthesis is about 80%.

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Abstract

The invention relates to a novel nickel ion extracting agent and a preparation method thereof, and aims to extract and recycle nickel ions in water phases. The novel nickel ion extracting agent can be utilized to enrich and extract nickel ions, is named as bi-N-(N-methyl-N-alkyl acetyl)-ethylenediamine diacetate, and is prepared through carrying out amidation reaction on EDTA (ethylenediaminetetraacetic acid) and N-methyl-N-alkylamine. The novel nickel ion extracting agent has the characteristics that preparation is easy and convenient, the price is low, the novel nickel ion extracting agent can be widely applied to removal and enrichment of nickel ions in sewage and water phases, the rate for extracting micro nickel from a water body can reach 97% or above, extraction capacity is high, loss during the extraction process is low, stability is good, and the extracting agent has quite good extracting properties for micro nickel ions in a relatively dilute solution, can easily perform reverse extraction under the acid condition, and is circularly and repeatedly utilized. In the formula (referring to the description), R represents an alkyl chain.

Description

technical field [0001] This patent relates to a novel extractant, which is used to extract nickel ions in water phase, and belongs to the field of environmental engineering materials. Background technique [0002] Nickel is a very important strategic resource, which can be used in military industry, people's livelihood, electronic technology and many other aspects. Nickel is similar to iron, but its overall properties are better than iron. According to data, my country and the United States are the countries with the largest demand for nickel in the world. For my country, the domestic sources of nickel are mainly two parts: newly produced nickel ore supply and recovered nickel, but a large part depends on imports. The reason is that my country's nickel ore reserves are small and of low quality and difficult to mine. Domestic ore-produced nickel is mainly open-pit mining and pyrometallurgy, which causes huge nickel pollution to the environment in the industrial process. Thi...

Claims

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Application Information

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IPC IPC(8): C07C231/02C07C237/06C22B3/32C22B23/00C02F1/26
CPCC02F1/26C02F2101/20C02F2103/16C07C231/02C07D265/32C22B23/0453C22B3/32C07C237/06Y02P10/20
Inventor 曹胜光孙国新彭修静
Owner UNIV OF JINAN
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