CN114436997A - Amide ionic liquid, synthesis method thereof and application thereof in gold extraction and separation - Google Patents
Amide ionic liquid, synthesis method thereof and application thereof in gold extraction and separation Download PDFInfo
- Publication number
- CN114436997A CN114436997A CN202210060569.1A CN202210060569A CN114436997A CN 114436997 A CN114436997 A CN 114436997A CN 202210060569 A CN202210060569 A CN 202210060569A CN 114436997 A CN114436997 A CN 114436997A
- Authority
- CN
- China
- Prior art keywords
- extraction
- ionic liquid
- gold
- concentration
- separation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/04—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
- C07D295/14—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D295/145—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with the ring nitrogen atoms and the carbon atoms with three bonds to hetero atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings
- C07D295/15—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals with the ring nitrogen atoms and the carbon atoms with three bonds to hetero atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings to an acyclic saturated chain
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/36—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of amides of sulfonic acids
- C07C303/40—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of amides of sulfonic acids by reactions not involving the formation of sulfonamide groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
- C07C311/48—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups having nitrogen atoms of sulfonamide groups further bound to another hetero atom
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to the technical field of new materials and precious metal separation, relates to preparation of a precious metal extractant, and relates to an amide ionic liquid, a synthetic method thereof and application thereof in gold extraction and separation. The structural formula is as follows:
the amide ionic liquid provided by the invention has the advantages of simple structure, simple and convenient synthesis process and good stability. The extractant has good effect of extracting and separating gold and can realize the extraction of gold and other metalsThe separation between the two metals, in the selective extraction experiment, the extraction rate of gold can reach 99.0 percent, while other metals only have the extraction rate less than 8.1 percent, and the extraction stability is good because of less influence of acidity and salinity. Therefore, the ionic liquid has better effect of extracting Au (III) from hydrochloric acid medium at room temperature.
Description
Technical Field
The invention belongs to the technical field of new materials and precious metal separation, relates to preparation of a precious metal extractant, and relates to an amide ionic liquid, a synthetic method thereof and application thereof in gold extraction and separation.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
According to the research of the inventor, the problems of the existing ionic liquid for extracting gold are as follows: 1) in practical application environments, gold in mineral resources has a plurality of accompanying precious metals; 2) gold in the secondary resources coexists with metal ions such as copper and iron, so that the gold and platinum separation and purification method cannot only take the separation and recovery rate as an index, and the purity of the recovered metal needs to be more emphasized; 3) the traditional liquid-liquid extraction system has poor anti-interference capability and complex process flow, and is difficult to achieve ideal application effect.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide the amide ionic liquid, the synthesis method thereof and the application thereof in extraction and separation of gold.
In order to achieve the purpose, the technical scheme of the invention is as follows:
in one aspect, the amide ionic liquid has a structural formula:
on the other hand, the preparation method of the amide ionic liquid comprises the steps of carrying out amidation reaction on dibutylamine and chloroacetyl chloride to obtain N, N-di-N-butyl-2-chloroacetamide, carrying out quaternization reaction on the N, N-di-N-butyl-2-chloroacetamide and 1-methyl-pyrrolidine, and then adding lithium bistrifluoromethanesulfonylimide to carry out reaction to obtain the amide ionic liquid.
In a third aspect, the application of the amide ionic liquid in gold extraction is provided.
In a fourth aspect, a method for extracting and separating gold comprises the following steps:
dissolving the amide ionic liquid in an organic solvent to form an organic phase;
adding hydrochloric acid and water into the gold-containing mother liquor to form a water phase;
the organic and aqueous phases were mixed and extracted.
By the extraction according to the invention, Au (iii) is extracted into the organic phase.
The invention has the beneficial effects that:
1. the amide ionic liquid provided by the invention is simple and convenient in synthesis process, and has good thermal stability and chemical stability.
2. The amide ionic liquid provided by the invention is used as an extracting agent, has good extraction performance and extraction selectivity on gold, the extraction rate of gold can reach 98.5%, and the extraction rate of other metals is less than 8.1%.
3. The extraction separation method provided by the invention is less influenced by the concentration of hydrochloric acid in the water phase, and has good gold extraction effect under different acidity.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 shows the NMR spectrum of the amide ionic liquid prepared in example 1 of the present invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In view of the problems of poor selectivity, poor anti-interference performance, easy pollution, high cost and the like of the existing ionic liquid gold extraction, the invention provides an amide ionic liquid, a synthesis method thereof and application thereof in gold extraction and separation.
In a typical embodiment of the present invention, an amide ionic liquid is provided, which has a structural formula as follows:
another embodiment of the present invention provides a preparation method of the amide ionic liquid, wherein the preparation method comprises the steps of performing amidation reaction on dibutylamine and chloroacetyl chloride to obtain N, N-di-N-butyl-2-chloroacetamide, performing quaternization reaction on the N, N-di-N-butyl-2-chloroacetamide and 1-methyl-pyrrolidine, and then adding lithium bistrifluoromethanesulfonylimide to perform reaction.
In some embodiments, the temperature of the quaternization reaction is 75 to 85 ℃.
In some embodiments, the temperature at which the lithium bis (trifluoromethanesulfonylimide) salt is added to carry out the reaction is room temperature. The room temperature refers to the temperature of an indoor environment, and is generally 15-30 ℃.
In some embodiments, the reaction is carried out by adding lithium bistrifluoromethanesulfonylimide and then centrifuging. The rotation speed of centrifugal separation is 10000-15000 rpm.
In a third embodiment of the invention, an application of the amide ionic liquid in gold extraction is provided.
In a fourth embodiment of the present invention, a method for extracting and separating gold is provided, which comprises the following steps:
dissolving the amide ionic liquid in an organic solvent to form an organic phase;
adding hydrochloric acid and water into the gold-containing mother liquor to form a water phase;
the organic and aqueous phases were mixed and extracted.
By the extraction according to the invention, Au (iii) is extracted into the organic phase.
Research shows that the amide ionic liquid provided by the invention has good extraction and separation effects on gold and can realize the separation between gold and other metals, in a selective extraction experiment, the extraction rate of gold can reach 99.0%, and other metals only have the extraction rate of less than 8.2%, so that the amide ionic liquid is slightly influenced by acidity and salinity and has good extraction stability.
In some embodiments, the organic solvent is chloroform.
In some embodiments, the concentration of the amide ionic liquid in the organic phase is 2-15 mg/L. Researches show that when other conditions are in a better range, the concentration is more than 4mg/L, and the extraction rate can reach more than 94%. When the concentration is 9-11 mg/L, the extraction effect is better.
In some embodiments, the concentration of hydrochloric acid in the aqueous phase is 0.1 to 5.0 mol/L. When the concentration is 0.1-1.0 mol/L, the extraction effect is better.
In some embodiments, the extraction temperature is 20 to 65 ℃. Research shows that when the extraction temperature is 24-25 ℃, the extraction effect is better. The extraction time is 15-25 min.
In some embodiments, the volume ratio of the organic phase to the aqueous phase is 1:2.5 to 3.5.
In order to make the technical solution of the present invention more clearly understood by those skilled in the art, the technical solution of the present invention will be described in detail below with reference to specific examples and comparative examples.
The experimental procedures described in the following examples are conventional unless otherwise specified.
The metal mother liquor used in the examples described below is a hydrochloric acid solution containing gold or other metal ions.
After the extraction separation process was completed, the metal concentration in the extract was measured by ICP-OES (inductively coupled plasma emission spectrometer), and the calculation formula of the extraction rate used was as follows:
wherein, CinAnd Ceq(mol/L) represents the gold concentration in the aqueous phase before and after extraction, respectively.
Reagents and materials used in the following examples are commercially available unless otherwise specified.
Example 1
1.[DBA-Pyr][NTf2]Synthesis of (2)
Dibutylamine (3.23 g; 25mmol) was first dissolved in diethyl ether (30mL) in a 100mL round-bottomed flask, magnetically stirred at room temperature and chloroacetyl chloride (2.26 g; 20mmol) was slowly added dropwise via syringe, and the reaction was complete after 30 min. After the organic phase was washed with water, it was shaken and allowed to stand in a separatory funnel to separate layers, and the upper layer liquid was collected and dried with magnesium sulfate for 2 hours. After filtration, N-di-N-butyl-2-chloroacetamide can be obtained by rotary evaporation, and the product is stored in a vacuum drying oven at 60 ℃ overnight.
N, N-di-N-butyl-2-chloroacetamide (2.06g, 10mmol) and 1-methyl-pyrrolidine (0.85g, 10mmol) were dissolved in acetonitrile (50ml) in a 200ml round bottom flask and stirred at 80 ℃ under reflux for 4 h; after the reaction product is cooled, the mixture is subjected to rotary evaporation; finally, the residue was dissolved directly in water and stirred with lithium bistrifluoromethanesulfonylimide (12mmol) for 1 h. After a new phase was observed to develop and became stable, the bottom phase was collected by centrifugation at 12000rpm for 3 min. Product [ DBA-Pyr][NTf2]Storing overnight at 60 deg.C in vacuum drying oven to obtain light yellow viscous liquid, i.e. amide ionic liquid, with nuclear magnetic spectrum shown in FIG. 1.
2. Gold extraction process
Preparing an organic phase: the synthesized amide ionic liquid is taken as an extractant to be dissolved in chloroform to form an organic phase, and the concentrations of the extractant are respectively 2mg/L, 4mg/L, 6mg/L, 8mg/L and 10 mg/L.
Preparing a water phase: taking mother liquor containing gold (III), adding hydrochloric acid and diluting with deionized water to prepare a water phase with the gold (III) concentration of 1.66mmol/L, wherein the hydrochloric acid concentration of the water phase is 0.1 mol/L.
Mixing the organic phase and the water phase according to the volume ratio of 1:3, extracting for 20min at 25 ℃, carrying out mechanical oscillation in the extraction process to ensure that the water phase and the organic phase are fully contacted (the same below), and calculating the extraction rate of Au (III) after the extraction is finished.
In the extraction separation process, the extraction rates of Au (III) are respectively 75.1%, 94.2%, 96.3%, 97.6% and 99.0% under the concentration of 2-10mg/L of the extracting agent. It can be seen that the extraction efficiency is best at 10mg/L, so the subsequent examples were tested at 10 mg/L.
Example 2
Synthesis of [ DBA-Pyr ] [ NTf2]
The method for synthesizing the ionic liquid in this example specifically refers to example 1.
2. Gold extraction process
Preparing an organic phase: dissolving the synthesized extractant in chloroform to form an organic phase, wherein the concentration of the extractant is 10 mg/L.
Preparing a water phase: taking mother liquor containing Au (III), adding hydrochloric acid with different amounts, diluting with deionized water, and preparing into aqueous phase with Au (III) concentration of 1.66mmol/L, and aqueous phase hydrochloric acid concentration of 0.1 mol/L.
Mixing the organic phase and the water phase according to the volume ratio of 1:3, extracting at 25 ℃, 35 ℃, 45 ℃, 55 ℃ and 65 ℃ respectively to extract Au (III), and calculating the extraction rate of Au (III) after the extraction is finished.
In the extraction separation process, the extraction rate of Au (III) under different temperature conditions is shown in Table 1. The extraction rate of Au (iii) decreased slightly with increasing temperature, but still at a higher level.
TABLE 1 temperature vs. DBA-Pyr][NTf2]Effect of extraction of Au (III)
| Temperature (. degree.C.) | 25 | 35 | 45 | 55 | 65 |
| Extraction ratio (%) | 99.0 | 93.2 | 89.0 | 86.7 | 83.1 |
Example 3
1.[DBA-Pyr][NTf2]Synthesis of (2)
The method for synthesizing the ionic liquid in this example specifically refers to example 1.
2. Gold extraction process
Preparing an organic phase: dissolving the synthesized extractant in chloroform to form an organic phase, wherein the concentration of the extractant is 10 mg/L.
Preparing a water phase: taking mother liquor containing gold (III), adding sodium chloride solutions with different amounts, diluting with deionized water, and preparing into aqueous phase with gold (III) concentration of 1.66mmol/L, wherein the hydrochloric acid concentration of the aqueous phase is kept at 0.1mol/L, and the chloride ion concentration is increased from 0.1mol/L to 5.0 mol/L.
And mixing the organic phase and the water phase according to the volume ratio of 1:3, extracting Au (III), and calculating the extraction rate of Au (III) after the extraction is finished.
In the above extraction separation process, different Cl-The extraction efficiency of Au (III) at the concentrations is shown in Table 2. Table 2 shows that the extraction rate of Au (III) is reduced along with the increase of the concentration of chloride ions, but is still at a higher level, which shows that the Au extraction rate has higher anti-interference capability on the chloride ions.
TABLE 2 chloride ion concentration vs [ DBA-P ]yr][NTf2]Effect of extraction of Au (III)
Example 4
1.[DBA-Pyr][NTf2]Synthesis of (2)
The method for synthesizing the ionic liquid in this example specifically refers to example 1.
2. Gold extraction process
Preparing an organic phase: dissolving the synthesized extractant in chloroform to form an organic phase, wherein the concentration of the extractant is 10 mg/L.
Preparing a water phase: taking mother liquor containing Au (III), adding different amounts of hydrochloric acid and diluting with deionized water to prepare an aqueous phase with the Au (III) concentration of 1.66mmol/L, wherein the hydrochloric acid concentration of the aqueous phase is increased from 0.1mol/L to 5.0 mol/L.
And mixing the organic phase and the water phase according to the volume ratio of 1:3, extracting Au (III), and calculating the extraction rate of Au (III) after the extraction is finished.
The extraction rate of Au (III) in the above extraction separation process at different concentrations of hydrochloric acid is shown in Table 3. Table 3 shows that the influence of the hydrochloric acid concentration on the gold extraction effect is low.
TABLE 3 hydrochloric acid concentration vs [ DBA-Pyr][NTf2]Effect of extraction of Au (III)
| Hydrochloric acid concentration (mol/L) | 0.1 | 1.0 | 2.0 | 3.0 | 4.0 | 5.0 |
| Extraction ratio (%) | 99.0 | 92.1 | 89.3 | 87.6 | 86.1 | 85.4 |
Example 5
In this embodiment, the extraction rate of the extractant on other non-noble metals is studied and counted to detect the extraction selectivity of the extractant on Au (iii) in the secondary resource.
1.[DBA-Pyr][NTf2]Synthesis of (2)
The method for synthesizing the ionic liquid in this example specifically refers to example 1.
2. Extraction process
Preparing an organic phase: the extraction reagents synthesized in example 1 were dissolved in chloroform to form an organic phase, and the concentration of the extraction reagents was 10 mg/L.
Preparing a water phase: taking mother liquor containing Au (III) and other metals (Mn (II), Fe (III), Cu (II), Mg (II), Ce (IV), Co (II) and Zn (II)), adding hydrochloric acid and diluting with deionized water to prepare a water phase with metal concentration of 1.66mmol/L, wherein the concentration of the hydrochloric acid in the water phase is 0.1 mol/L.
Mixing the organic phase and the water phase according to the volume ratio of 1:3, extracting Au (III), and calculating the extraction rate of each metal after the extraction is finished.
The extraction rate of each metal in the above extraction separation process is shown in table 3. The three extractants have high extraction rate to Au (III) and other metals (Mn (II), Fe (III), Cu (II) and Mg (II)The extraction rates of Ce (IV), Co (II) and Zn (II)) are not more than 10%, therefore, the [ DBA-Pyr ]][NTf2]The constructed solvent extraction system has good extraction selectivity on gold.
TABLE 4 extraction of gold and other non-noble metals by the extractant
| Metal ion | Au(Ⅲ) | Mn(Ⅱ) | Fe(Ⅲ) | Co(Ⅱ) | Cu(Ⅱ) | Ce(Ⅳ) | Mg(Ⅱ) | Zn(Ⅱ) |
| Extraction ratio (%) | 94.3 | 3.3 | 5.2 | 4.3 | 8.2 | 2.6 | 3.3 | 2.1 |
Example 6
In this embodiment, the extraction rate of the extractant on other noble metals is studied and counted to detect the extraction selectivity of the extractant on Au (iii) in the secondary resource.
1.[DBA-Pyr][NTf2]Synthesis of (2)
The method for synthesizing the ionic liquid in this example specifically refers to example 1.
2. Extraction process
Preparing an organic phase: the extraction agents synthesized in example 1 were dissolved in chloroform to form an organic phase, and the concentration of the extraction agent was 1.5 mmol/L.
Preparing a water phase: taking mother liquor containing Au (III) and other metals (Pt (IV), Pd (II), Ru (II), Rh (II) and Ir (IV)), adding hydrochloric acid and diluting with deionized water to prepare a water phase with metal concentration of 1.66mmol/L, wherein the concentration of the hydrochloric acid in the water phase is 0.1 mol/L.
And mixing the organic phase and the water phase according to the volume ratio of 1:3, extracting Au (III), and calculating the extraction rate of each metal after the extraction is finished.
The extraction rate of each metal in the above extraction separation process is shown in Table 4. The three extractants have high extraction rate to Au (III) and no extraction rate to other metals (Pt (IV), Pd (II), Ru (II), Rh (II) and Ir (IV)) exceeding 5.0%, so that the extraction rate of [ DBA-Pyr ] is not lower than that of the other metals][NTf2]The constructed solvent extraction system has good extraction selectivity on gold.
TABLE 5 extraction of gold and other noble metals by the extractant
| Noble metal | Au(Ⅲ) | Pt(Ⅳ) | Pd(Ⅱ) | Ru(Ⅱ) | Rh(Ⅱ) | Ir(Ⅳ) |
| Extraction ratio (%) | 95.6 | 3.3 | 2.5 | 2.1 | 2.1 | 2.4 |
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An amide ionic liquid is characterized in that the structural formula is as follows:
2. a preparation method of the amide ionic liquid, which is characterized in that dibutylamine is subjected to amidation reaction with chloroacetyl chloride to obtain N, N-di-N-butyl-2-chloroacetamide, the N, N-di-N-butyl-2-chloroacetamide is subjected to quaternization reaction with 1-methyl-pyrrolidine, and then lithium bistrifluoromethanesulfonylimide is added to react to obtain the amide ionic liquid.
3. The method for preparing amide ionic liquid according to claim 2, wherein the temperature of the quaternization reaction is 75-85 ℃;
or adding lithium bis (trifluoromethanesulfonyl) imide to react at room temperature;
or adding lithium bistrifluoromethanesulfonylimide for reaction, and then carrying out centrifugal separation; preferably, the rotation speed of centrifugal separation is 10000-15000 rpm.
4. The application of the amide ionic liquid in claim 1 in gold extraction.
5. A method for extracting and separating gold is characterized by comprising the following steps:
dissolving the amide ionic liquid of claim 1 in an organic solvent to form an organic phase;
adding hydrochloric acid and water into the gold-containing mother liquor to form a water phase;
the organic and aqueous phases were mixed and extracted.
6. The process for the extractive separation of gold according to claim 5, wherein the organic solvent is chloroform.
7. The method for extracting and separating gold according to claim 5, wherein the concentration of the amide ionic liquid in the organic phase is 2-15 mg/L; preferably, the concentration is greater than 4 mg/L; further preferably, the concentration is 9-11 mg/L.
8. The process for the extractive separation of gold according to claim 5, wherein the concentration of hydrochloric acid in the aqueous phase is 0.1 to 5.0 mol/L; preferably, the concentration is 0.1-1.0 mol/L.
9. The method for extracting and separating gold according to claim 5, wherein the extraction temperature is 20-65 ℃; preferably, the extraction temperature is 24-25 ℃.
10. The process for the extractive separation of gold according to claim 5, wherein the volume ratio of the organic phase to the aqueous phase is 1:2.5 to 3.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210060569.1A CN114436997B (en) | 2022-01-19 | 2022-01-19 | Amide ionic liquid, synthesis method thereof and application of amide ionic liquid in extraction and separation of gold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210060569.1A CN114436997B (en) | 2022-01-19 | 2022-01-19 | Amide ionic liquid, synthesis method thereof and application of amide ionic liquid in extraction and separation of gold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114436997A true CN114436997A (en) | 2022-05-06 |
| CN114436997B CN114436997B (en) | 2023-06-30 |
Family
ID=81366917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210060569.1A Active CN114436997B (en) | 2022-01-19 | 2022-01-19 | Amide ionic liquid, synthesis method thereof and application of amide ionic liquid in extraction and separation of gold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114436997B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934178A (en) * | 2022-06-21 | 2022-08-23 | 中国地质科学院郑州矿产综合利用研究所 | Method for recovering gold from gold smelting slag chloridizing roasting leacheate |
| CN115433130A (en) * | 2022-08-11 | 2022-12-06 | 山东圳谷新材料科技有限公司 | Temperature response type imidazole ionic liquid and method for extracting gold (III) by using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103459622A (en) * | 2010-12-17 | 2013-12-18 | 南澳大利亚大学 | Extraction of gold |
| CN103958018A (en) * | 2011-10-03 | 2014-07-30 | 塞克姆公司 | Cationic displacer molecules for hydrophobic displacement chromatography |
| CN106498184A (en) * | 2016-12-07 | 2017-03-15 | 青海柴达木兴华锂盐有限公司 | A kind of extraction system of lithium |
| CN110042235A (en) * | 2019-04-29 | 2019-07-23 | 山东大学 | A kind of extractant and extracting process of separation gold |
| WO2021148758A1 (en) * | 2020-01-23 | 2021-07-29 | Centre National De La Recherche Scientifique | Method for recovering gold and/or one or more platinoids present in an acidic aqueous phase |
-
2022
- 2022-01-19 CN CN202210060569.1A patent/CN114436997B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103459622A (en) * | 2010-12-17 | 2013-12-18 | 南澳大利亚大学 | Extraction of gold |
| CN103958018A (en) * | 2011-10-03 | 2014-07-30 | 塞克姆公司 | Cationic displacer molecules for hydrophobic displacement chromatography |
| CN106498184A (en) * | 2016-12-07 | 2017-03-15 | 青海柴达木兴华锂盐有限公司 | A kind of extraction system of lithium |
| CN110042235A (en) * | 2019-04-29 | 2019-07-23 | 山东大学 | A kind of extractant and extracting process of separation gold |
| WO2021148758A1 (en) * | 2020-01-23 | 2021-07-29 | Centre National De La Recherche Scientifique | Method for recovering gold and/or one or more platinoids present in an acidic aqueous phase |
Non-Patent Citations (1)
| Title |
|---|
| 孙旭: "吡咯烷离子液体对盐酸介质中金和铂的萃取分离研究", 优秀硕士学位论文全文数据库, no. 02, pages 1 - 43 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934178A (en) * | 2022-06-21 | 2022-08-23 | 中国地质科学院郑州矿产综合利用研究所 | Method for recovering gold from gold smelting slag chloridizing roasting leacheate |
| CN115433130A (en) * | 2022-08-11 | 2022-12-06 | 山东圳谷新材料科技有限公司 | Temperature response type imidazole ionic liquid and method for extracting gold (III) by using same |
| CN115433130B (en) * | 2022-08-11 | 2023-11-03 | 山东圳谷新材料科技有限公司 | Temperature response type imidazole ionic liquid and gold (III) extraction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114436997B (en) | 2023-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114436997B (en) | Amide ionic liquid, synthesis method thereof and application of amide ionic liquid in extraction and separation of gold | |
| CN110042235B (en) | Extracting agent and extracting method for separating gold | |
| CN106048221B (en) | One kind uses ionic liquid [OMIM] BF4The method for extracting LREE in acid solution | |
| CN106399686A (en) | Acidic ionic liquid and method for separating and purifying rare earth or rare and precious metals by solvent extraction coupling electrolytic process | |
| CN103451427A (en) | Heavy rare earth and light rare earth separation method and extraction agent | |
| CN114574697A (en) | Method for extracting and separating rare earth neodymium from phosphate ionic liquid | |
| US3936494A (en) | Naphthenohydroxamic acid preparation | |
| CN112501458B (en) | Method for selectively extracting and separating molybdenum in waste catalyst leaching solution by using quaternary ammonium salt eutectic solvent | |
| Ohashi et al. | Effect of alkyl substitueras in hydrophobic 8-quinolinol on the extraction of gallium (III) and applications to the separation of gallium (III) from aluminum (III) | |
| CN114150159B (en) | Temperature-controlled noble metal separation and extraction agent, preparation method thereof and homogeneous extraction method | |
| CN113736995A (en) | Application of carboxylic acid compound as extracting agent and metal ion extraction method | |
| CN109852800B (en) | Extracting agent for recovering industrial waste palladium catalyst and palladium recovery method | |
| CN114920714A (en) | Low-viscosity ionic liquid and method for extracting gold by using ionic liquid without solvent | |
| CN105753861B (en) | Phenanthroline derivative, and preparation method and application thereof | |
| CN112981145B (en) | Method for extracting and separating rare earth yttrium by adopting pyridine carboxylic acid ionic liquid | |
| Hua et al. | Design of a liquid membrane system for extracting rare earths | |
| JP5837756B2 (en) | Novel compounds, metal extractants and their applications | |
| CN115433130B (en) | Temperature response type imidazole ionic liquid and gold (III) extraction method thereof | |
| CN108220632B (en) | Rare earth recovery and enrichment process | |
| Wang et al. | New compound N-methyl-N-isopropyl octanthioamide for palladium selective extraction and separation from HCl media | |
| JP6948698B2 (en) | Palladium / Platinum Extractor, Palladium / Platinum Separation Method | |
| CN114524775B (en) | Temperature-control type ionic liquid and gold extraction method using same | |
| CN105503612B (en) | Ammonium salt of six alkyl triethylene of tetramethyl four and its preparation method and application | |
| CN101525697B (en) | Method for separating enriched palladium by adopting supermolecule secondary spherical coordination identification | |
| CN109851567B (en) | Pyrazine compound and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |