Process for producing potassium permanganate doped potassium ferrate

A technology of potassium permanganate and potassium ferrate, applied in chemical instruments and methods, iron compounds, inorganic chemistry, etc., can solve the problems of poor stability of potassium ferrate, low yield of potassium ferrate, thermal decomposition, etc. The effect of good chemical properties, high discharge specific capacity, and good stability
CN101428862AInactive Publication Date: 2009-05-13STATE GRID CORP OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2009-05-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing potassium permanganate-doped potassium ferrate. The method comprises the following steps: firstly, mixing a ferrous compound and a stabilizer by the proportion of Fe and the stabilizer; secondly, dissolving the mixture in a potassium hydroxide solution; thirdly, stirring, adding an oxidizer to the potassium hydroxide solution by a certain proportion of Fe and the oxidizer at the temperature controlled within a certain range, reacting for a certain time, separating the purple suspended solid product prepared from the reaction, decompressing and filtering; fourthly, mixing the purple solid product with the mixed solution of potassium hydroxide and potassium permanganate in a certain proportion, stirring and separating the purple solid to obtain the purple solid product; and fifthly, rinsing the purple solid product with cyclohexane, absolute alcohol and ether respectively, decompressing and filtering, and vacuum drying until the weight is constant to obtain the potassium ferrate solid. The invention has the advantages that the purity of synthesis is high, the thermal stability of the synthesis is high, the purity of potassium ferrate is higher than 98%, the content of the potassium ferrate is higher than 96%; the obtained potassium ferrate has good electrochemical performance; and the conservation rate of the charge / discharge cycle discharge capacity is up to 90.5%.
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Description

technical field

[0001] The invention relates to the fields of water treatment agent and chemical power supply manufacturing, and more specifically relates to a preparation method of potassium ferrate doped with potassium permanganate. The potassium permanganate-doped potassium ferrate prepared by the invention can be used as a water treatment agent, a positive electrode active material of a chemical power source, and can also be used as an oxidant for organic synthesis. Background technique

[0002] Potassium ferrate has strong oxidizing properties and high standard electrode potential (its standard electrode potential E 0 =0.77V). Potassium ferrate can oxidize many organic pollutants in various media, and its reduction product colloidal ferric hydroxide can simultaneously remove lead, cadmium, mercury and other heavy metal ion pollutants through adsorption and flocculation, so it is widely used in It is a new, efficient and safe multi-functional water treatment agent that...

Claims

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