Ferrate synthesis

Presentation

This process consists in making react an iron salt, an alkali metal hydroxide or alkaline earth metal and chlorine gas in a rotating reactor at stoichiometric and solid/dry conditions. This method also allows a stabilization of the said ferrates, by partial substitution of iron at high degree of oxidation by a stable cation.

Large scale production of ferrate granules is made possible by a single solid particle coating method of an alkali metal hydroxide or alkaline earth metal, with solid particles of one or more salts or iron oxides (Fe (II) and / or Fe (III)). These oxides are then converted in Fe (VI) in a fluid bed reactor under a fluidization gas containing chlorine.

Competitive advantages

• A competitive and clean process;
• A phenomenological and technical solution of large-scale industrial process: Production of ferrates in a fluidized bed;
• Higher yield than in wet conditions;
• Lower investment and production costs;
• Easier to transport: ferrates stabilized at solid state and ambient temperatures.
  

Applications/Markets

• Wastewater treatment and industrial effluent;
• Decontamination and disinfection;
• Bleaching textiles, organic and inorganic chemistry;
• Oxidation of cyanides and hydrogen sulfide.
  

Intellectual property

• Patent EP2111373;
• Collaboration sought: license for process industrialization and marketing of new molecules.

Laboratory

Institut Jean Lamour (IJL)