Síntese eletroquímica do ion ferrato(VI)

Química Nova

Maria Augusta De Luca²  Sérgio João De Luca¹  Maria Alice Santana¹ 

[1] ,Universidade Federal do Rio Grande do Sul Instituto de Química Porto Alegre RS

关键词: ferrate(VI);    electrosynthesis;    anodic materials;   

DOI  :  10.1590/S0100-40422003000300021

来源: SciELO

【 摘 要 】

The optimization of ferrate(VI) ion generation has been studied due to its favorable characteristics for application in several fields, including environmental quality control. The paper presents the best conditions for electrolytic generation of ferrate(VI) in alkaline media. An appropriate electrolyte was NaOH, 10 mol/L. Circulation of the electrolyte solution was important to avoid acidification close to the anode surface. An anode pre-cleaning with 10% HCl was more efficient than a cathodic pre-polarization. Among the distinct anode materials tested, pig iron showed the best performance, allowing up to 20 g/L of Na2FeO4, in 10 mol/L NaOH solution to be obtained, after 7 h of reactor operation, which is a concentration higher than those found in literature for alternative processes.

【 授权许可】

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