Study On Electrochemical Preparation Of Potassium Ferrate

The iron(VI) derivation, potassium ferrate(VI)(Fe(VI)) has properties such as oxidizing power, selectivity, and a non-toxic by-product Fe(III), that make potassium ferrate(VI) an environmentally friendly oxidant for several applications. Potassium ferrate has been considered for years to treat with natural waters and wastewaters, because of its environmental friendly properties and its high efficiency. Fe(VI) is also a selective oxidant for a large number of organic compounds with Fe(III) as a by-product. Fe(VI) therefore has a role in greener technology for organic synthesis. Moreover, Ferrate has also been recently used in a new class of"super-iron"batteries, referred to as super-iron batteries, there use the Fe(VI)/Fe(III) system as anode material. In this paper we reported an electrochemical method generation of ferrate.In this study it reported an electrochemical generation of ferrate by dissolution of a new material. The ferrate concentration and the current efficiency are substantially larger for this iron electrode than for other electrodes reported in previous work at higher current densities (50-200 mAcm^-2), it indicating the beneficial effect of using this material iron.It discussed the influence of current density, electrolyte composition and concentration, temperature, electrolysis time, anode material and anode activated assistant on current efficiency during ferrate electrochemical production. It indicated optimum parameters effect on the yield for the electrochemical generation of ferrate were: 100mAcm^-2,16MNaOH,35℃and 2h. The side reaction, thai is, OER, play a role of obstacle for the process of electro-generation of ferrate, and the current efficiency did not change greatly with addition of complex ferrate stabilizer to anolyte. Furthermore, the method was established removing water and alkaline from K₂FeO₄ separated from anolyte. The purification of the products were studied.In this paper the cyclic voltammograms (CVs) of iron electrode revealed a broad anodic wave between-1.40 and 0.70V versus HgO/Hg corresponding to iron dissolution and passivation of the electrode. The CV is strikingly different in that anodic wave with previous papers, where was emerging the peak which was related to the inter-mediator of electro-oxidation of Fe(III) species in concentration basic aqueous solution. It should be FeO₄^3-(Fe(V) species). The anodic behaviour of an iron electrode in different experimental conditions was studied in this paper.In this paper the electrode potential effect on electrolysis time was studied by...