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Method of obtaining ethylenediammonium bis(1-hydroxyethane-1,1-diphosphonato(2-))cuprate(+2), zincate(+2) and nickelate(+2)

IPC classes for russian patent Method of obtaining ethylenediammonium bis(1-hydroxyethane-1,1-diphosphonato(2-))cuprate(+2), zincate(+2) and nickelate(+2) (RU 2352575):
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FIELD: chemistry.

SUBSTANCE: invention relates to obtaining etyheleneammonium bis(1-hydroxyethane-1,1-diphosphonato(2-))cuprate (+2), etyheleneammonium bis(1-hydroxyethane-1,1-diphosphonato(2-)) zincate(+2) and etyheleneammonium bis(1-hydroxyethane-1,1-diphosphonato(2-)) nickelate(+2) and can be used for processing toxic wastes of obtaining metal coatings - waste electrolytes of galvanic copper, zinc and nickel plating, waste solutions of chemical nickel plating and copper plating. Products, obtained by said method, can be used for preparation of electrolytes, metal corrosion inhibitors, for obtaining various copper, zinc and nickel compounds, including catalysts of organic and inorganic substance synthesis. Claimed method includes using liquid industrial wastes, containing metal(+2), ethyleneammonium and/or anion of 1-hydroxyethane-1,1-diphosphonic acid as reagents. Target products are obtained by crystallisation from reaction water solution with separation of sediment from solution, process is carried out at temperature from (-5) to 105°C and atmospheric pressure. Method allows to obtain pure crystalline products with yield up to 98%, to reduce expenditures on environment protection.

EFFECT: method simplification and increase of its manufacturability.

7 cl, 9 ex

 

The invention relates to chemical technology of organic compounds, in particular to a method for producing metal compounds(+2) with 1-hydroxyethane-1,1-diphosphonic acid composition of the N3NCH2CH2NH3M(CH3S(HE)(RHO3N)2)2·2H2O, where M stands for copper(+2), zinc(+2), Nickel(+2). The claimed method can be applied for processing of toxic waste for producing metallic coatings - waste electrolyte galvanic copper plating, galvanizing, Nickel plating, the spent chemical Nickel-plating solution, the spent solution chemical copper plating. The products obtained by this method can be used to prepare electrolyte galvanic copper plating, galvanizing, Nickel plating, for the production of corrosion inhibitors of metals to obtain various compounds of copper, zinc, Nickel, including catalysts for the synthesis of organic and inorganic substances.

To obtain high quality coatings with copper, zinc, Nickel apply complex electrolytes containing as the main components of metal(+2) and Ethylenediamine or anion 1-hydroxyethane-1,1-diphosphonic acid ligands that bind metal(+2) complex) (Haynes R.T., Irani R.R., Langguth R.P. US 3475293, publ. 1969. Kowalski X. US 3706634, publ. 1972. Nobel F.I., Yoen L.C. US 3833486, publ. 1974. G.O. Mallory, Johnson C.E. DE 2942792, publ. 198. Ratajewicz Z., Saneluta C. // Plating and Surface Finishing, 1999, v.86, no. 7, p.50. Electroplating. Handbook (edited by Genberg A.M., A.F. Ivanov, Kravchenko L.L.) - M.: metallurgy, 1987, s. Ivshin AV EN 2058436, publ. 1996). Very promising are complex electrolytes containing both of the ligand (Lviv V.M., Afonin Mrs x EN 2276205, publ. 2006). However, being bound in strong soluble complexes, copper(+2), zinc(+2), Nickel(+2) not deposited alkaline reagents in the processes of wastewater treatment, which creates a serious environmental problem in the use of such electrolytes. The claimed method allows us to extract from exhaust of electrolytes and solutions - waste receiving electrochemical and chemical coatings metals all three major components - metal(+2), Ethylenediamine and anion 1-hydroxyethane-1,1-diphosphonic acid in the form of easily recyclable compounds.

A method of obtaining bis(1-hydroxyethane-1,1-diphosphonate(2-))zincate(+2) ethylendiamine composition (H3NCH2CH2NH3)Zn(CH3S(HE)(RHO3N)2)2·2H2O, comprising preparing a reaction of an aqueous solution containing zinc(+2), ethylendiamine and anion 1-hydroxyethane-1,1-diphosphonic acid, the crystallization of the desired product from the solution, separating the precipitate from the solution (Song N.-N., Zheng L.-M., Wang, Zh., Yan Ch.-H., Xin X.-Q. Zinc Diphosphonates Templated by Organic Amines: Sntheses and Characterization of [NH 3(CH2)2NH3]Zn(hedpH2)2·2H2O and [NH3(CH2)nNH3]Zn2(hedpH)2·2H2O (n=4,5,6) (hedp=1-Hydroxyethylidenediphosphonate) // Inorganic Chemistry, 2001, v.40, No. 19, p.5024-5029). The reaction aqueous solution is produced by interaction of sulfate or zinc chloride with 1-hydroxyethane-1,1-diphosphonic acid (the molar ratio of zinc(+2):1-hydroxyethane-1,1-diphosphonic acid is about 1:5) and Ethylenediamine at pH 3-4 and heated at 110°C under hydrothermal conditions (steel autoclave high pressure) for 3 days. The way the prototype is based on the following reaction:

ZnSO4+2CH3S(HE)(RHO3H2)2+2H2NCH2CH2NH2+2H2O→

H3NCH2CH2NH3Zn(CH3C(OH)(PO3H)2)2·2H2O+H3NCH2CH2NH3SO4.

The disadvantage of this method is its complexity, low technology, the need for additional costs for long-term maintenance of high constant temperature and additional cost of chemical reagents.

A method of obtaining bis(1-hydroxyethane-1,1-diphosphonate(2-))nikeeta(+2) ethylendiamine composition

(H3NCH2CH2NH3)Ni(CH3S(HE)(RHO3N)2)2·2H2O, comprising preparing a reaction of an aqueous solution containing n is Kel(+2), ethylendiamine and anion 1-hydroxyethane-1,1-diphosphonic acid, the crystallization of the desired product from the solution, separating the precipitate from the solution (Song N.-N., Zheng L.-M., Lin Ch.-H., Wang S.-L., Xin X.-Q., Gao S. Effect of Organic Templates on Directing the Structures of Nickel(II)-l-Hydroxyethylidenediphosphonate Compounds: A Structural and Magnetic Study // Chemistry of Materials, 1999, v.11, No. 9, p.2382-2388). The reaction aqueous solution is produced by interaction of Nickel sulfate with 1-hydroxyethane-1,1-diphosphonic acid (the molar ratio of Nickel(+2):1-hydroxyethane-1,1-diphosphonic acid of 1.0: (0,33-2,8)) and Ethylenediamine at pH 3 and heated at 140°C under hydrothermal conditions (steel autoclave high pressure) for 2 days. The way the prototype is based on the following reaction:

With NISO4+2CH3S(HE)(RHO3H2)2+2H2NCH2CH2NH2+2H2O→

H3NCH2CH2NH3Ni(CH3S(HE)(RHO3N)2)2·2H2O+H3NCH2CH2NH3SO4.

The disadvantage of this method is its complexity, low technology, the need for additional costs for long-term maintenance of high constant temperature and additional cost of chemical reagents.

If a claimed invention was intended to simplify the method of obtaining bis(1-hydroxyethane-1,1-diphosphonate(2-))cuprate(+2), zincate(+2) and nikeeta(+2) ethylendiamine, to improve the shape of its manufacturability, to reduce material costs to obtain the target product.

The problem is solved in that a method of obtaining bis(1-hydroxyethane-1,1-diphosphonate(2-))cuprate(+2), zincate(+2), nikeeta(+2) ethylendiamine includes the preparation of the reaction of an aqueous solution containing metal(+2), selected from the group consisting of copper(+2), zinc(+2), Nickel(+2)and containing Ethylenediamine and anion 1-hydroxyethane-1,1-diphosphonic acid, the crystallization of the desired product from the solution, separating the precipitate from the solution. New in the claimed method is that for the preparation of the reaction of an aqueous solution as a source of metal(+2), ethylendiamine and/or anion 1-hydroxyethane-1,1-diphosphonic acid is used as a production waste metal coating selected from the group consisting of spent electrolyte galvanic copper plating, the spent electrolyte, galvanic, galvanizing, the spent electrolyte galvanic Nickel-plating, the spent chemical Nickel-plating solution, the spent solution chemical copper plating, and the process is carried out at a temperature of (-5) to 105°C and atmospheric pressure. It is desirable to use the spent electrolyte copper plating containing as main components copper(+2), Ethylenediamine, or the spent electrolyte copper plating containing to the operation of the main components copper(+2), anion 1-hydroxyethane-1,1-diphosphonic acid, or the spent electrolyte copper plating containing as main components copper(+2), Ethylenediamine, anion 1-hydroxyethane-1,1-diphosphonic acid, or the spent electrolyte galvanizing, containing as main components zinc(+2), Ethylenediamine and/or anion 1-hydroxyethane-1,1-diphosphonic acid, or the spent Nickel plating electrolyte containing as main components Nickel(+2), Ethylenediamine and/or anion 1-hydroxyethane-1,1-diphosphonic acid. In the reaction aqueous solution is desirable to establish a pH of from 0.5 to 8.5.

The method of obtaining bis(1-hydroxyethane-1,1-diphosphonate(2-))cuprate(+2), zincate(+2) and nikeeta(+2) ethylendiamine is the preparation of an aqueous solution containing as the main components of metal(+2), ethylendiamine and anion 1-hydroxyethane-1,1-diphosphonic acid, the source of which is waste from the production of metallic coatings: waste electrolyte copper plating, galvanizing, Nickel plating, the spent chemical Nickel-plating solution, the spent solution chemical copper plating. In the reaction aqueous solution determine the optimal value of pH by mixing liquid waste each other in the calculated number and adding (if necessary) acid or base. Water rest the R leave for crystallization in the course of time, sufficient to achieve a high yield of the target product. The precipitate is separated from the solution one of the known ways, washed it (if necessary) water or an organic solvent and dried (if necessary) at room or elevated temperature.

The method of obtaining bis(1-hydroxyethane-1,1-diphosphonate(2-))cuprate(+2), zincate(+2) and nikeeta(+2) ethylendiamine based on the following reactions.

K6[Cu(CH3S(HE)(RHO3)2)2]+H2NCH2CH2NH2+6HCl+2H2O→

H3NCH2CH2NH3Cu(CH3S(HE)(RHO3N)2)2·2H2O+6KCl.

K6[Cu(CH3S(HE)(RHO3)2)2]+2CH3S(HE)(RHO3K2)2+[Cu(H2NCH2CH2NH2)2]SO4+

6H2SO4+4H2O→2H3NCH2CH2NH3Cu(CH3S(HE)(RHO3N)2)2·2H2O+7K2SO4.

Na2[Ni(CH3C(OH)(PO3H)2)2]+[Ni(H2NCH2CH2NH2)3]Cl2+

2CH3S(HE)(RHO3HNa)2+6HCl+4H2O→

2H3NCH2CH2NH3Ni(CH3S(HE)(RHO3N)2)2·2H2O+H3NCH2CH2NH3Cl2+6NaCl.

K6[Zn(CH3S(HE)(RHO3)2)2]+H2NCH2CH2NH 2+6HNO3+2H2O→

H3NCH2CH2NH3Zn(CH3C(OH)(PO3H)2)2·2H2O+6KNO3.

K6[Zn(CH3S(HE)(RHO3)2)2]+2CH3S(HE)(RHO3K2)2+[Zn(H2NCH2CH2NH2)2]SO4+

6H2SO4+4H2O→2H3NCH2CH2NH3Zn(CH3C(OH)(PO3H)2)2·2H2O+7K2SO4.

To prepare the reaction of an aqueous solution containing metal(+2), ethylendiamine and anion 1-hydroxyethane-1,1-diphosphonic acid, you can use various liquid wastes of production of metallic coatings by electrochemical and chemical methods, in particular spent electrolytes ethylenediamino copper plating, which have the composition, for example:

Sulphate of copper(+2) 60-80 g/l
The Ethylenediamine 20-60 g/l
Ammonium sulfate 45-60 g/l
The sodium sulfate 20-65 g/l

or

Sulphate of copper(+2) 60-70 g/l
trendily 110-130 g/l
Sulphate of ethylendiamine 70-90 g/l

spent electrolytes ethylenediamino galvanizing, which have the composition, for example:

Sulphate of zinc(+2) 20-25 g/l
The Ethylenediamine 30-40 g/l
Ammonium chloride 20-50 g/l

spent electrolytes ethylenediamino Nickel plating, which have the composition, for example:

Chloride Nickel(+2) 10-20 g/l
The Ethylenediamine 25-35 g/l
Ammonium chloride 20-50 g/l

spent copper plating electrolytes based on 1-hydroxyethane-1,1-diphosphonic acid, which have a composition, for example:

Sulphate of copper(+2) 15-150 g/l
1-Hydroxyethane-1,1-diphosphonate(4-)potassium 35-700 g/l

spent electrolytes galvanizing on the basis of the 1-hydroxyethane-1,1-diphosphonic acid, which have the composition, for example:

Sulphate of zinc(+2) 16-160 g/l
1-Hydroxyethane-1,1-diphosphonate(4-)potassium 35-700 g/l

spent electrolytes Nickel-based 1-hydroxyethane-1,1-diphosphonic acid, which have a composition, for example:

Sulfate Nickel(+2) 15-150 g/l
1-Hydroxyethane-1,1-diphosphonate(4-)potassium 35-700 g/l

spent electrolytes containing as ligands for the binding of metal cations(+2) complexes at the same time as Ethylenediamine, and the anion of 1-hydroxyethane-1,1-diphosphonic acid, which have a composition, for example:

Sulphate of copper(+2) 15-150 g/l
1-Hydroxyethane-1,1-diphosphonate(4-)potassium 70-500 g/l
The Ethylenediamine 6-60 g/l

or

Sulphate of zinc(+2) 16-80 g/l
1-Hydroxyethane-1,1-diphosphonate(4-)potassium 40-500 g/l
The Ethylenediamine 10-50 g/l

or

Chloride Nickel(+2) 35-110 g/l
1-Hydroxyethane-1,1-diphosphonate(4-)potassium 150-350 g/l
The Ethylenediamine 20-200 g/l

the spent chemical Nickel-plating solution, based on Ethylenediamine, in particular the spent solution coating alloy Nickel-boron, which has a composition, for example:

Chloride Nickel(+2) 2-20 g/l
The Ethylenediamine 20-70 g/l
Borohydride sodium 0.1 to 1.5 g/l
The sodium borate 30-150 g/l
Hydroxide and sodium carbonate 30-80 g/l

or spent solution coating alloy Nickel-phosphorus-based 1-hydroxyethane-1,1-diphosphonic acid, which has a composition, for example:

Sulfate Nickel(+2) 6-15 g/l
1-Hydroxyethane-1,1-diphosphonate(2-)sodium 15-55 g/l
Hypophosphite sodium 5-20 g/l
Postit sodium 20-100 g/l
Sodium acetate 10-15 g/l

waste solutions of the chemical copper plating, which have the composition, for example:

Sulphate of copper(+2) 1-8 g/l
1-Hydroxyethane-1,1-diphosphonate(4-)potassium 20-40 g/l
Formaldehyde 0.5 to 2 g/l
Formate sodium 20-50 g/l

(Haynes R.T., Irani R.R., Langguth R.P. US 3475293, publ. 1969. Kowalski X. US 3706635, publ. 1972. G.O. Mallory, Johnson C.E. DE 2942792, publ. 1980. Sudakov GA electroplating. - M.: Mechanical Engineering. 1987. Electroplating. Handbook (edited by Genberg A.M., A.F. Ivanov, Kravchenko L.L.) - M.: metallurgy, 1987. Berezin, S., Sageev P.M., Amirov RR // Protection of metals, 1987, volume 23, No. 6, s. Lviv V.M., Afonin Mrs x EN 2293144, publ. 2007).

To obtain pure desired products with wysockiego in the reaction aqueous solution, it is desirable to maintain an optimal pH value. This is because in a very acidic solubility of target products increases, and their output is reduced in the reaction:

H3NCH2CH2NH3M(CH3S(HE)(RHO3N)2)2·2H2O+4H+↔H3NCH2CH2NH32++M2+

+2CH3S(HE)(RHO3H2)2+2H2O.

In alkaline solubility of target products also increases, and their output is reduced in the reaction:

H3NCH2CH2NH3M(CH3S(HE)(RHO3N)2)2·2H2O+ON-

[M(H2NCH2CH2NH2)(CH3S(HE)(RHO3)2)2]6-+8H2O.

Therefore, high yield and high purity of the target product can be ensured if the crystallization is from the reaction of an aqueous solution with a pH from 0.5 to 8.5.

Target products crystallize from the reaction of aqueous solutions under normal atmospheric pressure and a temperature of (-5) to 105°C, so there is no need for maintaining strict synthesis conditions (hydrothermal conditions), as in the method according to the prototype (the temperature of 110-140°C., the pressure is higher than 100 ATM).

Example 1.

Mix 100 ml of spent electrolyte galvanic copper plating with the concentration of sulphate of copper(+2) to 0.40 mol/l Ethylenediamine 0.80 mol/l, sulfate is the atrium of 0.15 mol/l, ammonium sulphate 0.34 mol/l and a solution of 14.0 g of dihydrate 1-hydroxyethane-1,1-diphosphonate(1 -), potassium 200 ml of water. To the obtained solution under stirring was added concentrated sulfuric acid to achieve a pH of 2.3. The solution is allowed to stand for crystallization for 30 hours at room temperature. The precipitate is filtered off under reduced pressure on a glass filter, washed with water and dried in air at room temperature to constant weight. Output 95,0%.

Found, %: Cu - 10,9; - 12,5; N - 4,3; N - 4,5; P - 21,5.

Calculated for C6H22N2P4O14Cu·2H2O, %: Cu - Of 11.15; - 12,65; N - 4,60; N To 4.92; P - A 21.75.

Example 2.

To 100 ml of spent electrolyte galvanic copper plating with the concentration of sulphate of copper(+2) 0.35 mol/l, 1-hydroxyethane-1,1-diphosphonate(4-) potassium of 1.03 mol/l with stirring add first 19,0 ml of an aqueous solution of Ethylenediamine concentration 3,70 mol/l, then the solution of sulfuric acid with a concentration of 1.0 mol/l to achieve a pH of 3.2. The solution is allowed to stand for crystallization to 5 days at a temperature of 26-28°C. the Precipitate is filtered off under reduced pressure on a glass filter, washed first with water, then with ethanol and dried in air at room temperature to constant weight. The yield of 97.4%.

Found, %: Cu - 10,9; - 12,2; N - 4,4; N - 4,6; P - 21,4.

Calculated for C6H22N2P 4O14Cu·2H2O, %: Cu - Of 11.15; - 12,65; N - 4,60; N To 4.92; P - A 21.75.

Example 3.

Mix 50 ml of the spent electrolyte galvanic copper plating with the concentration of sulphate of copper(+2) 0.35 mol/l, 1-hydroxyethane-1,1-diphosphonate(4-) potassium of 1.03 mol/l, 50 ml of water and 15 ml of spent electrolyte galvanic copper plating with the concentration of sulphate of copper(+2) to 0.40 mol/l Ethylenediamine 2.0 mol/l, sulphate of ethylendiamine 0.50 mol/liter To the obtained solution under stirring was added a 50%solution of sulfuric acid to achieve a pH of 1.9. Contribute to the solution of the crystal seed dihydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))cuprate(+2) ethylendiamine and leave the solution to stand for crystallization for 4 days at room temperature. The precipitate is filtered off under reduced pressure on a glass filter, washed first with water, then with ethanol and dried in air at room temperature to constant weight. Output 86,0%.

Found, %: Cu - 11,2; - 12,3; 4,1; N - 4,4; P - 21,5.

Calculated for C6H22N2P4O14Cu·2H2O, %: Cu - Of 11.15; - 12,65; N - 4,60; N To 4.92; P - A 21.75.

Example 4.

To 100 ml of the spent solution from the chemical copper plating hole PCB concentration of sulphate of copper(+2) 0,0080 mol/l, 1-hydroxyethane-1,1-diphosphonate(4-) potassium 0.10 mol/l, formaldehyde 0.10 mol/l of sodium formiate 0.67 mol/l of sodium sulfate and 0.25 Mall under stirring was added concentrated sulfuric acid to achieve a pH of 1.6. To 8.0 ml of spent electrolyte galvanic copper plating with the concentration of sulphate of copper(+2) to 0.40 mol/l Ethylenediamine 2.0 mol/l, sulphate of ethylendiamine 0.50 mol/l with stirring was added concentrated sulfuric acid to achieve a pH of 2.0. Mix the two specified solution, making the solution so obtained crystalline seed dihydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))cuprate(+2) ethylendiamine and leave the solution to stand for crystallization for 30 days at a temperature of 20-25°C. the Precipitate is filtered off under reduced pressure on a glass filter, washed with water and dried in air at room temperature to constant weight. The output of 31.4%.

Found, %: Cu - 11,2; C - 12, 0mm; N - 4,6, N - 4,6; P - 21,4.

Calculated for C6H22N2P4O14Cu·2H2O, %: Cu - Of 11.15; - 12,65; N - 4,60; N To 4.92; P - A 21.75.

Example 5.

Mix 100 ml of spent electrolyte galvanic zinc concentration of zinc sulfate 0.22 mol/l, 1-hydroxyethane-1,1-diphosphonate(4-)potassium 0.80 mol/l and 70 ml of spent electrolyte galvanic zinc concentration of zinc sulfate of 0.14 mol/l Ethylenediamine 0.59 mol/l To the obtained solution under stirring was added concentrated sulfuric acid to achieve a pH of 3.3. In the solution contribute crystalline seed dihydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))CIN the ATA(+2) ethylendiamine and leave the solution to stand for crystallization for 20 hours at room temperature. The precipitate is filtered off under reduced pressure on a glass filter, washed with water and dried in air at room temperature to constant weight. Output 95,1%.

Found, %: Zn - 11,2; - 12,2; N - 4,5; N - 4,3; P - 21,2.

Calculated for C6H22N2P4O14Zn·2H2O, %: Zn - 11,44; - 12,61; N - 4,59; N - 4,90; P - 21,68.

Example 6.

To 100 ml of spent electrolyte galvanic zinc concentration of zinc sulfate(+2) 0.20 mol/l, 1-hydroxyethane-1,1-diphosphonate(4-)potassium 0.71 mol/l Ethylenediamine 0.41 mol/l with stirring, add concentrated nitric acid to achieve a pH of 3.4. In the resulting solution make crystal seed dihydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))zincate(+2) ethylendiamine and leave the solution to stand for crystallization at 60 hours at room temperature. The precipitate is filtered off under reduced pressure on a glass filter, washed with water and dried in air at room temperature to constant weight. Output 89,0%.

Found, %: Zn - 11,5; - 12,3; N - 4,2; N - 4,1; P - 21,0.

Calculated for C6H22N2P4O14Zn·2H2O, %: Zn - 11,44; - 12,61; N - 4,59; N - 4,90; P - 21,68.

Example 7.

Mix 150 ml of the spent chemical Nickel-plating solution with a chloride concentration of Nickel(+2) 0,058 mol/l Ethylenediamine 0.40 mol/l, sodium borohydride 0,005 mol/who, borate sodium 0.55 mol/l hydroxide and sodium carbonate in 1.5 mol/l and 250 ml of the spent chemical Nickel-plating solution with the concentration of Nickel sulfate(+2) to 0.060 mol/l, 1-hydroxyethane-1,1-diphosphonate(2-)potassium 0.20 mol/l, hypophosphite sodium 0.05 mol/l, phosphite sodium 0.20 mol/l sodium acetate and 0.15 mol/liter To the obtained solution under stirring was added concentrated sulfuric acid to achieve a pH of 2.9. In the solution contribute crystalline seed dihydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))nikeeta(+2) ethylendiamine and leave the solution to stand for crystallization for 25 days at room temperature. The precipitate is filtered off under reduced pressure on a glass filter, washed with water and dried in air at room temperature to constant weight. The output is 60.1%.

Found, %: Ni - 10,2; - 12,2; N - 4,3; N - 4,5; P - 21,6.

Calculated for C6H22N2P4O14Ni·2H2O In %: Ni - Accounted For 10.39; - 12,76; N With 4.64; N - 4,96; P - 21,93.

Example 8.

Mix 200 ml of the spent chemical Nickel-plating solution with the concentration of Nickel sulfate(+2) to 0.060 mol/l, hypophosphite sodium 0,048 mol/l, phosphite sodium 0.23 mol/l, 1-hydroxyethane-1,1-diphosphonate(2-)potassium 0.22 mol/l sodium acetate 0.14 mol/l and 50 ml of spent electrolyte galvanic Nickel-plating with a chloride concentration of Nickel(+2) 0.10 mol/l Ethylenediamine 0.52 mol/L. the resulting solution under stirring was added concentrated sulfuric acid to achieve a pH of 3.3. In the solution contribute crystalline seed dihydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))nikeeta(+2) ethylendiamine and leave the solution to stand for crystallization of 28 days at a temperature of 17-20°C. the Precipitate is filtered off under reduced pressure on a glass filter, washed with water and dried in air at room temperature to constant weight. The yield of 68.2%.

Found, %: Ni - 10,4; - 12,5; N - 4,2; N - 4,4; P - 21,8.

Calculated for C6H22N2P4O14Ni·2H2O In %: Ni - Accounted For 10.39; - 12,76; N With 4.64; N - 4,96; P - 21,93.

Example 9.

100 ml of the spent chemical Nickel-plating solution with a chloride concentration of Nickel(+2) 0,058 mol/l Ethylenediamine 0.40 mol/l, sodium borohydride 0,005 mol/l sodium borate 0.55 mol/l hydroxide and sodium carbonate in 1.5 mol/l with stirring dissolve 4.1 g of dihydrate 1-hydroxyethane-1,1-diphosphonate(1 -), potassium. To the obtained solution under stirring was added concentrated sulfuric acid to achieve a pH of 2.9. In the solution contribute crystalline seed dihydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))nikeeta(+2) ethylendiamine and leave the solution to stand for crystallization to 20 days at room temperature. The precipitate is filtered off under reduced pressure on a glass filter, washed with water and dried in air at room temperature to constant weight. The output of 7.5%.

Found, %: Ni - 10,1; C - 12, 0mm; N - 4,5; N - 4,5; P - 21,4.

Calculated for C6H22N2P4O14Ni·2H2O In %: Ni - Accounted For 10.39; - 12,76; N With 4.64; N - 4,96; P - 21,93.

The resulting dihydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))cuprate(+2)ethylendiamine, dehydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))zincate(+2) ethylendiamine, dehydrate bis(1-hydroxyethane-1,1-diphosphonate(2-))nikeeta(+2) ethylendiamine are crystalline substances in blue, white, green yellow, respectively. The substance is moderately soluble in water, soluble in 10%solutions of ammonia, sodium hydroxide, sulfuric acid, slightly soluble in ethanol, acetone, acetic acid.

As seen from the above examples, the claimed method allows to obtain the target products in high yield, using as sources of metal(+2), ethylendiamine and anion 1-hydroxyethane-1,1-diphosphonic acid waste solutions production of copper, zinc and Nickel coatings of different composition, which reduces material costs to obtain the desired products. Simplification of the method and increase its maintainability is achieved by implementation of the process of obtaining the desired products in more mild conditions than in the method according to the prototype: a normal (moderately high or low) temperature and under normal (atmospheric) pressure.</>

1. The method of obtaining bis(1-hydroxyethane-1,1-diphosphonate(2-))cuprate(+2), zincate(+2), nikeeta(+2) ethylendiamine comprising preparing a reaction of an aqueous solution containing metal(+2), selected from the group consisting of copper(+2), zinc(+2), Nickel(+2)and containing Ethylenediamine and anion 1-hydroxyethane-1,1-diphosphonic acid, the crystallization of the desired product from the solution, separating the precipitate from the solution, characterized in that for the preparation of the reaction of an aqueous solution as a source of metal(+2), ethylendiamine and/or anion 1 - hydroxyethane-1,1-diphosphonic acid is used as a production waste metal coating selected from the group consisting of spent electrolyte galvanic copper plating, the spent electrolyte, galvanic, galvanizing, the spent electrolyte galvanic Nickel-plating, the spent chemical Nickel-plating solution, the spent solution chemical copper plating, and the process is carried out at a temperature of (-5) to 105°C and atmospheric pressure.

2. The method according to claim 1, characterized in that use the spent electrolyte copper plating containing as main components copper(+2), Ethylenediamine.

3. The method according to claim 1, characterized in that use the spent electrolyte copper plating containing as main components copper(+2), anion hydroxyethane-1,1-diphosphonic acid.

4. The method according to claim 1, characterized in that use the spent electrolyte copper plating containing as main components copper(+2), Ethylenediamine, anion 1-hydroxyethane-1,1-diphosphonic acid.

5. The method according to claim 1, characterized in that use the spent electrolyte galvanizing, containing as main components zinc(+2), Ethylenediamine and/or anion 1-hydroxyethane-1,1-diphosphonic acid.

6. The method according to claim 1, characterized in that use exhaust Nickel plating electrolyte containing as main components Nickel(+2), Ethylenediamine and/or anion 1-hydroxyethane-1,1-diphosphonic acid.

7. The method according to claim 1, characterized in that the reaction aqueous solution establish a pH of from 0.5 to 8.5.

 

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