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Synthetic method for preparing iron(II) acetate by electrolysis

A technology of ferrous acetate and synthesis method, applied in electrolysis process, electrolysis components, electrolysis organic production and other directions, can solve the problems of slow reaction rate, low degree of ionization, easy hydrolysis and oxidation, etc., to solve the problems of slow reaction rate and reaction equipment Simple, good reaction rate effect

Inactive Publication Date: 2013-12-11
IRICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ferrous acetate is an important compound, but the traditional preparation method is more difficult. Usually, iron powder is added to acetic acid to react, but because the acidity of acetic acid is very weak, the degree of ionization is very low, and the reactivity of iron powder is not very strong. Therefore, the reaction rate is very slow, and it is difficult to see bubbles in the reaction of iron powder and acetic acid, and it is also difficult to react after long-term storage; secondly, because the ferrous acetate generated is easily hydrolyzed and oxidized, it is difficult to synthesize the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Taking pure iron as the anode electrode and graphite as the cathode electrode, and placing the pure iron and graphite in the electrolyte, keeping the distance between the cathode electrode and the anode electrode to 0.5cm, and the electrolyte solution being 0.5mol / L of ferrous acetate solution;

[0022] 2) Add an excess of 20% acetic acid to the electrolyte to make the pH of the electrolyte 4.5, and add citric acid at a concentration of 0.01mol / L according to the electrolytic cell, and control the temperature of the electrolyte at 60°C;

[0023] 3) Pure iron and graphite are connected with direct current, the voltage between pure iron and graphite is controlled at 1.8 volts, and the current is 0.5A. During electrolysis, the anode pure iron dissolves, and the cathode graphite emits hydrogen, and generates ferrous acetate solution;

[0024] 4) Transfer the prepared ferrous acetate solution to the crystallization tank, and add ferrous acetate seeds to the crystallizati...

Embodiment 2

[0026] 1) With pure iron as the anode electrode and graphite as the cathode electrode, the pure iron and graphite are placed in the electrolyte, and the distance between the pure iron and the graphite is kept to 1 cm, and the electrolyte is 1mol / L Ferrous acetate solution;

[0027] 2) Add an excess of 30% acetic acid to the electrolyte to make the pH of the electrolyte 3.5, and add tartaric acid at a concentration of 0.01mol / L according to the electrolytic cell, and control the temperature of the electrolyte at 50°C;

[0028] 3) Connect the pure iron and graphite with a 5000 Hz alternating current, control the voltage between the pure iron and the graphite at 1.4 volts, and the current is 1A. During electrolysis, the anode pure iron dissolves, and the cathode graphite releases hydrogen gas, simultaneously generating ferrous acetate solution;

[0029] 4) Transfer the prepared ferrous acetate solution to the crystallization tank, and add ferrous acetate seeds to the crystalliza...

Embodiment 3

[0031] 1) With pure iron as the anode electrode and a titanium plate as the cathode electrode, the pure iron and the titanium plate are placed in the electrolyte, and the distance between the pure iron and the titanium plate is kept to 2 cm, and the electrolyte is 0.8 The ferrous acetate solution of mol / L;

[0032] 2) Add an excess of 50% acetic acid to the electrolyte to make the pH of the electrolyte 2.5, and add tartaric acid at a concentration of 0.03mol / L according to the electrolytic cell, and control the temperature of the electrolyte at 55°C;

[0033] 3) Connect the pure iron and titanium plate with a DC power supply, and control the voltage between the pure iron and the titanium plate at 1.6 volts, and the current is 2A. During electrolysis, the pure iron at the anode dissolves, and the titanium plate at the cathode emits Hydrogen, and generate ferrous acetate solution;

[0034] 4) Transfer the prepared ferrous acetate solution to the crystallization tank, and add fe...

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Abstract

The invention provides a method for preparing iron(II) acetate by electrolysis. Conventional iron powder is added into acetic acid for a reaction and does not have strong reactive activity because of weak acidity of acetic acid, and thus the reaction rate is extremely slow. According to the method of the invention, based on the principle of anodic oxidation and cathodic reduction when pure iron is electrolyzed, electrons are transferred, pure iron as an anode receives electrons and forms Fe<2+>, and acetic acid loses electrons and generates H<+> ions which finally change into H2 and are discharged, and CH3COO<-> and Fe<2+> combine and form iron(II) acetate. Therefore ferrous ions are directly generated in the solution by electrolysis, and no other iron salts and impurities are introduced; by controlling voltage and current, the reaction rate can be well controlled, so that the problems about the source of ferrous ions and reaction rate are solved; and reaction equipment is simple, reaction conditions are easy to control, and waste iron can be taken as the raw material, so that the cost is substantially saved.

Description

technical field [0001] The invention relates to a synthesis method for preparing ferrous acetate, in particular to a synthesis method for preparing ferrous acetate by electrolysis. Background technique [0002] Ferrous acetate, also known as ferrous acetate, is an important analytical reagent and ferrous supplement. It is used in pharmaceutical, printing and dyeing industries. The main component of Huatiefu powder in traditional Chinese medicine is well compatible with the human body. The iron supplement is one of the iron salts for preparing the positive electrode material of lithium-ion batteries. [0003] Ferrous acetate is an important compound, but the traditional preparation method is more difficult. Usually, iron powder is added to acetic acid to react, but because the acidity of acetic acid is very weak, the degree of ionization is very low, and the reactivity of iron powder is not very strong. Therefore reaction rate is very slow, and iron powder and acetic acid re...

Claims

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Application Information

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IPC IPC(8): C25B3/12C07C53/10C25B3/13
Inventor 刘涛涛
Owner IRICO
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