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A kind of potassium iodate and hydroiodic acid electrochemical co-production method

A technology of hydriodic acid and potassium iodate, which is applied to electrodes, electrolysis components, electrolysis processes, etc., achieves the effects of simple method, improved current economy, and loose production conditions.

Active Publication Date: 2021-06-08
山东博苑医药化学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved in the present invention is to provide a method for the electrochemical co-production of potassium iodate and hydroiodic acid with mild synthesis conditions and relatively loose requirements on production conditions without causing environmental pollution and safety problems.

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  • A kind of potassium iodate and hydroiodic acid electrochemical co-production method

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Experimental program
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Effect test

Embodiment 1

[0032] A method for electrochemical co-production of potassium iodate and hydroiodic acid, specifically comprising the following steps:

[0033] a. Compound the solvent of the anolyte; water and methanol are mixed in equal volumes to compound the solvent of the anolyte;

[0034] b. Composite anolyte; iodine and potassium hydroxide are 10:1 by iodine: the molar ratio of potassium hydroxide, and the molar concentration of iodine element is 0.5 mole per liter, completely dissolved in the solvent of anolyte, stirring Obtain the anolyte after uniformity;

[0035] c. Compound the solvent of the catholyte; water and methanol are mixed in equal volumes to compound the solvent of the catholyte;

[0036] d. Composite catholyte; elemental iodine: the molar ratio of sodium iodide is 10:1 and dissolved in the solvent of catholyte, after stirring evenly, catholyte is obtained; the concentration of elemental iodine is 5 times of iodine concentration in anolyte .

[0037] e. Electrolysis: ...

Embodiment 2

[0041] A method for electrochemical co-production of potassium iodate and hydroiodic acid, specifically comprising the following steps:

[0042] a. Compound the solvent of the anolyte; water and ethanol are mixed with equal volumes to compound the solvent of the anolyte;

[0043] b. Composite anolyte; iodine and potassium hydroxide are 5:1 by iodine: the molar ratio of potassium hydroxide, and the molar concentration of iodine element is 0.8 moles per liter, completely dissolved in the solvent of anolyte, stirring Obtain the anolyte after uniformity;

[0044] c. compound the solvent of the catholyte; water and ethanol are mixed with equal volumes to compound the solvent of the catholyte;

[0045] d. Composite catholyte; elemental iodine: the molar ratio of sodium iodide is 5:1 and dissolved in the solvent of catholyte, after stirring evenly, catholyte is obtained; the concentration of elemental iodine is 5 times of iodine concentration in anolyte .

[0046] e. Electrolysis:...

Embodiment 3

[0050] A method for electrochemical co-production of potassium iodate and hydroiodic acid, specifically comprising the following steps:

[0051] a. Solvent for compounding anolyte; water is the solvent for anolyte;

[0052] b. Composite anolyte; iodine and potassium hydroxide are 1:1 according to the molar ratio of iodine: potassium hydroxide, and the molar concentration of iodine element is 1.5 moles per liter, completely dissolved in the solvent of anolyte, stirring Obtain the anolyte after uniformity;

[0053] c. The solvent of compound catholyte; Water is the solvent of catholyte;

[0054] d. Composite catholyte; elemental iodine: the molar ratio of potassium iodide is 7:1, dissolved in the solvent of catholyte, and stirred evenly to obtain catholyte; the concentration of elemental iodine is 5 times that of iodine in the anolyte.

[0055] e. Electrolysis: The electrolytic reaction is carried out in a double-chamber electrolyzer separated by a cationic membrane. The anolyt...

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Abstract

The invention relates to the field of potassium iodate synthesis, and discloses a method for the electrochemical co-production of potassium iodate and hydriodic acid, which specifically comprises the solvent of compounded anolyte; compounded anolyte; a certain amount of iodine and potassium hydroxide according to A certain proportion is completely dissolved in the solvent of the anolyte, and the anolyte is obtained after stirring evenly; the solvent of the compound catholyte; After uniformity, the catholyte is obtained; electrolysis; the electrolytic reaction is carried out by using a double-chamber electrolytic cell separated by a cationic membrane; the compounded anolyte is added to the anode chamber, and the catholyte is added to the cathode chamber; crystallization; The mother liquor is cooled to a certain temperature for crystallization, and after the anode mother liquor is crystallized, potassium iodate is obtained by filtration; the synthesis method only passes through the steps of electrolysis, crystallization and filtration, the method is simple, and the requirements for production conditions are relatively loose, which will not cause environmental pollution and avoid occurrence of security incidents.

Description

technical field [0001] The invention relates to the field of potassium iodate synthesis, in particular to a method for the electrochemical co-production of potassium iodate and hydroiodic acid. Background technique [0002] At present, the production methods of potassium iodate have been as follows: [0003] The first method is the potassium chlorate oxidation method. Potassium chlorate is oxidized in dilute nitric acid solution and refined iodine suspension to generate KH(IO 3 ) 2 , and the product is neutralized with potassium hydroxide to obtain potassium iodate. [0004] The second method is microwave-induced synthesis. Mix iodine and hydrogen peroxide, adjust the pH of the solution to 1 to 2 with nitric acid, put it in a microwave oven, and irradiate it with microwaves. After the reaction was completed, the solution was cooled to room temperature, and the pH value was adjusted to 10 with hydrogen peroxide, then cooled to crystallize, filtered, and dried to obtain p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/24C25B11/042C25B11/043C25B15/00
CPCC25B1/24C25B11/04C25B15/00
Inventor 翟永利张政委
Owner 山东博苑医药化学股份有限公司