CN108642520A - A method of zinc is generated based on choline chloride-malonic acid eutectic system - Google Patents
A method of zinc is generated based on choline chloride-malonic acid eutectic system Download PDFInfo
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- CN108642520A CN108642520A CN201810686128.6A CN201810686128A CN108642520A CN 108642520 A CN108642520 A CN 108642520A CN 201810686128 A CN201810686128 A CN 201810686128A CN 108642520 A CN108642520 A CN 108642520A
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- malonic acid
- choline chloride
- zinc
- eutectic system
- ionic liquid
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/16—Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/02—Electrodes; Connections thereof
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
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- 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
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Abstract
The present invention relates to a kind of methods generating zinc based on choline chloride malonic acid eutectic system, configure the original electrolyte of choline chloride malonic acid zinc oxide；A small amount of ethylenediamine is added in choline chloride malonic acid zinc oxide ionic liquid then according to fixed substance withdrawl syndrome；In above-mentioned ionic liquid, electrode is immersed after above-mentioned ionic liquid and is connect with power supply by copper wire as cathode as soluble anode, red copper block by zinc metal sheet, and high current density constant current electro-deposition is carried out under constant temperature；After electro-deposition, sample is cleaned by ultrasonic, is dried.The raw material that the present invention uses is simple, requires no pre-processing, only adds a small amount of additive, and operation is simple, environmentally protective, safe and non-toxic, and adoptable current density is high, and electrodepositing speed is fast, and zinc can be quickly generated on Copper substrate.
Description
Technical field
The present invention relates to electroplating technology fields, and in particular to one kind is generated based on choline chloride-malonic acid eutectic system
The method of zinc.
Background technology
China is the maximum country of zinc reserves, and China's zinc yield ranked first in the world since 1992.Metallic zinc conduct
A kind of basic material in modern industrial society, is widely used in various fields.Electrogalvanizing is widely used in steel material
Protective coating is suitble to be widely popularized in large-scale industrial production since the electro-deposition techniques cost of zinc is relatively low.
Especially prevent atmospheric corrosion.Traditional galvanized method has zinc-plated, chloride galvanizing of cyanide etc..Wherein cyanide is zinc-plated because containing
The cyanide of severe toxicity, it is seriously polluted.Contain a large amount of potassium chloride severe corrosion to equipment in chloride galvanizing electroplate liquid.How
It obtains the metallic zinc of high quality and elimination electrodeposit liquid has become Green Electrochemical and environment-protecting industrial to the harm of environment and urgently solves
Certainly the problem of.
Ionic liquid be it is a kind of salt being melted by the room temperature that ion is constituted completely, usually by geometry it is asymmetric it is organic sun from
Sub and inorganic or organic anion composition.Ionic liquid is high with chemical thermal stability, non-combustible, steam forces down, conductivity is high,
The characteristics such as small toxicity, electrochemical window mouth width.Ionic liquid can be obtained the ability electro-deposition in high-temperature molten salt and obtains at room temperature
Metal and its alloy, but again without strong corrosive as high-temperature molten salt.Eutectic ionic liquid is typically by centainly changing
Learn the eutectic mixing that the quaternary ammonium salt for measuring ratio and hydrogen-bond donor (such as amide, carboxylic acid and polyalcohol compound) are composed
Object.Eutectic ionic liquid have electrochemical window mouth width, dissolubility and good conductivity, steam forces down and good physical chemistry
The advantages that stability is a kind of novel green solvent.In terms of electrodeposit metals, since eutectic ionic liquid can select
Property dissolving metal oxide, while there is good electric conductivity and relatively negative reduction potential, i.e. electrodepositable obtains at room temperature
To most of metals that can be obtained in aqueous solution, obtained metal quality is good, and current efficiency is high.Simultaneously as eutectic is molten
The preparation process of agent is simple, low in raw material price, has broad application prospects in non-ferrous metallurgy technology field.State's inner beam
Seminar of army by by choline chloride-malonic acid eutectic system add zinc chloride successfully prepare spelter coating, but
This method prepares that molten salt system viscosity used by spelter coating is higher, and current density used is relatively low, and electrodepositing speed is slower, and thickness applies
Layer is long the time required to preparing, and (Wang Wei, big, the Liang Jun of first blueness wait Mg alloy surface electricity in choline chlorides-malonic acid ionic liquid heavy
Influence [J] the material protections of product current density to zinc coat performance, 2013,46 (8):1-4.).
Invention content
Relatively low this of fused salt viscosity existing for spelter coating is prepared the purpose of the present invention is being directed to current eutectic electro-deposition to ask
Topic, by choosing new ionic liquid, it is proposed that a method of zinc is generated based on choline chloride-malonic acid eutectic system.
To achieve the above object, technical solution provided by the invention is：
A method of zinc is generated based on choline chloride-malonic acid eutectic system, is included the following steps：
1) configuration of electrolyte：By a certain percentage then choline chloride, malonic acid and zinc oxide are heated after mixing
To 88 DEG C~92 DEG C, constant temperature is that choline chloride-malonic acid-zinc oxide is original until the sticky liquid of the transparence of stirring generation
Electrolyte；A small amount of second is added in choline chloride-malonic acid-zinc oxide ionic liquid then according to fixed substance withdrawl syndrome
Diamines；
2) connection electrode：In above-mentioned ionic liquid, zinc metal sheet as soluble anode, red copper block as cathode, anode and
Distance is 2cm between cathode；
3) electro-deposition：Electrode is immersed after above-mentioned ionic liquid and is connect with power supply by copper wire, high current is carried out under constant temperature
Density constant current electro-deposition；
4) sample is taken out：After electro-deposition, sample is cleaned by ultrasonic, is dried.
The ratio molar ratio of choline chloride, malonic acid and zinc oxide is 4 in electrolyte:4:1.
In step 1), the substance withdrawl syndrome of ethylenediamine is 0.1mol/L.
Double anode is used in step 2).
In step 3), constant current density 15-25mA/cm2。
In step 3), electrodeposition temperature is 90 DEG C.
In step 3), electrodeposition time is 60 minutes.
Compared with prior art, the beneficial effects of the invention are as follows：
The raw material that the present invention uses is simple, requires no pre-processing, only adds a small amount of additive, easy to operate easy
Row, it is environmentally protective, it is safe and non-toxic, and adoptable current density is high, and electrodepositing speed is fast, can be quickly generated on Copper substrate
Zinc.
Description of the drawings
Fig. 1 is the surface EDS figures of the spelter coating obtained in example 1.
Fig. 2 is the XRD spectrum of the spelter coating obtained in example 2.
Fig. 3 is the section SEM figures of the spelter coating obtained in example 3.
Specific implementation mode
The present invention is further explained in the light of specific embodiments.
Embodiment 1
1) the ratio molar ratio of choline chloride, malonic acid and zinc oxide is 4 in electrolyte:4:1, by a certain percentage by chlorination
Choline, malonic acid and zinc oxide are then heated to 90 DEG C after mixing, and constant temperature is until the sticky liquid of the transparence of stirring generation
Body.It is subsequently added into the ethylenediamine of 0.1mol/L.
2) using zinc metal sheet as soluble anode, red copper block is put into as cathode in the above-mentioned mixing liquid for being heated to 90 DEG C
Double anode constant current electro-deposition in 60 minutes is carried out, distance is 2cm, current density 25mA/cm wherein between anode and cathode2。
3) after electro-deposition, sample taking-up absolute ethyl alcohol, deionized water is cleaned by ultrasonic, finally blown with hair-dryer low temperature.
The XRD diagram of gained coating is referring to Fig. 2, it can be found that the coating on red copper matrix is spelter coating.
Embodiment 2
1) the ratio molar ratio of choline chloride, malonic acid and zinc oxide is 4 in electrolyte:4:1, by a certain percentage by chlorination
Choline, malonic acid and zinc oxide are then heated to 90 DEG C after mixing, and constant temperature is until the sticky liquid of the transparence of stirring generation
Body.It is subsequently added into the ethylenediamine of 0.1mol/L.
2) using zinc metal sheet as soluble anode, red copper block is put into as cathode in the above-mentioned mixing liquid for being heated to 90 DEG C
Double anode constant current electro-deposition in 60 minutes is carried out, distance is 2cm, current density 20mA/cm wherein between anode and cathode2。
3) after electro-deposition, sample taking-up absolute ethyl alcohol, deionized water is cleaned by ultrasonic, finally blown with hair-dryer low temperature.
The EDS energy spectrum diagrams of gained coating are referring to Fig. 2, it can be found that the coating on red copper matrix is spelter coating.
Embodiment 3
1) the ratio molar ratio of choline chloride, malonic acid and zinc oxide is 4 in electrolyte:4:1, by a certain percentage by chlorination
Choline, malonic acid and zinc oxide are then heated to 90 DEG C after mixing, and constant temperature is until the sticky liquid of the transparence of stirring generation
Body.It is subsequently added into the ethylenediamine of 0.1mol/L.
2) using zinc metal sheet as soluble anode, red copper block is put into as cathode in the above-mentioned mixing liquid for being heated to 90 DEG C
Double anode constant current electro-deposition in 60 minutes is carried out, distance is 2cm, current density 15mA/cm wherein between anode and cathode2。
3) after electro-deposition, sample taking-up absolute ethyl alcohol, deionized water is cleaned by ultrasonic, finally blown with hair-dryer low temperature.
The Surface energy spectrum analysis figure of gained coating is referring to Fig. 3, it can be found that the coating on red copper matrix is combined with matrix
Closely.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, any ripe
Professional and technical personnel is known, without departing from the scope of the present invention, according to the technical essence of the invention, to above real
Apply any simple modification, equivalent replacement and improvement etc. made by example, still fall within technical solution of the present invention protection domain it
It is interior.
Claims (7)
1. a kind of method generating zinc based on choline chloride-malonic acid eutectic system, it is characterised in that：Include the following steps：
1) configuration of electrolyte：Choline chloride, malonic acid and zinc oxide are then heated to 88 after mixing by a certain percentage
DEG C~92 DEG C, constant temperature is choline chloride-original electrolysis of malonic acid-zinc oxide until the sticky liquid of the transparence of stirring generation
Liquid；A small amount of second two is added in choline chloride-malonic acid-zinc oxide ionic liquid then according to fixed substance withdrawl syndrome
Amine；
2) connection electrode：In above-mentioned ionic liquid, zinc metal sheet is as soluble anode, and red copper block is as cathode, anode and cathode
Between distance be 2cm；
3) electro-deposition：Electrode is immersed after above-mentioned ionic liquid and is connect with power supply by copper wire, high current density is carried out under constant temperature
Constant current electro-deposition；
4) sample is taken out：After electro-deposition, sample is cleaned by ultrasonic, is dried.
2. the method according to claim 1 for generating zinc based on choline chloride-malonic acid eutectic system, feature exist
In：The ratio molar ratio of choline chloride, malonic acid and zinc oxide is 4 in electrolyte:4:1.
3. the method according to claim 1 for generating zinc based on choline chloride-malonic acid eutectic system, feature exist
In：In step 1), the substance withdrawl syndrome of ethylenediamine is 0.1mol/L.
4. the method according to claim 1 for generating zinc based on choline chloride-malonic acid eutectic system, feature exist
In：Double anode is used in step 2).
5. the method according to claim 1 for generating zinc based on choline chloride-malonic acid eutectic system, feature exist
In：In step 3), constant current density 15-25mA/cm2。
6. the method according to claim 1 for generating zinc based on choline chloride-malonic acid eutectic system, feature exist
In：In step 3), electrodeposition temperature is 90 DEG C.
7. the method according to claim 1 for generating zinc based on choline chloride-malonic acid eutectic system, feature exist
In：In step 3), electrodeposition time is 60 minutes.
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| CN201810686128.6A CN108642520A (en) | 2018-06-28 | 2018-06-28 | A method of zinc is generated based on choline chloride-malonic acid eutectic system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796006A (en) * | 2019-03-21 | 2019-05-24 | 河北科技大学 | A kind of ionic liquid is in the preparation method and application for preparing application and nitrogen-doped carbon quantum dot in nitrogen-doped carbon quantum dot |
| CN114317984A (en) * | 2022-01-04 | 2022-04-12 | 华北理工大学 | Method for selectively soaking zinc by utilizing cyclone classification-ionic liquid-ultrasonic synergy |
| CN114921813A (en) * | 2022-05-27 | 2022-08-19 | 中宁县宁华再生资源循环利用科技有限公司 | Electrodeposition zinc ingot processing technology based on weak acid environment leaching |
| CN115323393A (en) * | 2022-08-12 | 2022-11-11 | 昆明理工大学 | Method for preparing nickel-based bimetallic hydrogen evolution catalyst by anodic dissolution electrodeposition in eutectic ionic liquid |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109796006A (en) * | 2019-03-21 | 2019-05-24 | 河北科技大学 | A kind of ionic liquid is in the preparation method and application for preparing application and nitrogen-doped carbon quantum dot in nitrogen-doped carbon quantum dot |
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| CN114317984A (en) * | 2022-01-04 | 2022-04-12 | 华北理工大学 | Method for selectively soaking zinc by utilizing cyclone classification-ionic liquid-ultrasonic synergy |
| CN114921813A (en) * | 2022-05-27 | 2022-08-19 | 中宁县宁华再生资源循环利用科技有限公司 | Electrodeposition zinc ingot processing technology based on weak acid environment leaching |
| CN114921813B (en) * | 2022-05-27 | 2024-04-09 | 中宁县宁华再生资源循环利用科技有限公司 | Electro-deposited zinc ingot processing technology based on weak acid environment leaching |
| CN115323393A (en) * | 2022-08-12 | 2022-11-11 | 昆明理工大学 | Method for preparing nickel-based bimetallic hydrogen evolution catalyst by anodic dissolution electrodeposition in eutectic ionic liquid |
| CN115323393B (en) * | 2022-08-12 | 2024-05-28 | 昆明理工大学 | Method for preparing nickel-based bimetallic hydrogen evolution catalyst by anodic dissolution electrodeposition in eutectic ionic liquid |
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