C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
C01G 49/00 (2006.01) C02F 1/52 (2006.01) C02F 1/72 (2006.01) C09C 1/22 (2006.01)
Patent
CA 2467272
The invention concerns a method for preparing an alkali metal ferrate, which comprises the following steps: (i) preparing a reaction mixture comprising at least an iron salt, at least an alkali or alkaline-earth metal hypochlorite and an alkali metal hydroxide; (ii) heating the mixture prepared at step (i) to a temperature ranging between 45 and 75 ·C, so as to form the alkali metal ferrate; (iii) recuperating the alkali metal ferrate formed at step (ii). The invention also concerns novel alkali metal ferrates.
L'invention concerne un procédé de préparation d'un ferrate d'un métal alcalin, selon lequel on effectue les étapes suivantes : (i) on prépare un mélange réactionnel comprenant au moins un sel de fer, au moins un hypochlorite d'un métal alcalin ou alcalino-terreux et un hydroxyde d'un métal alcalin, (ii) on chauffe le mélange préparé à l'étape (i) à une température comprise entre 45 et 75~C, de sorte à former le ferrate de métal alcalin, (iii) on récupère le ferrate de métal alcalin formé à l'étape (ii). L'invention concerne aussi de nouveaux ferrates de métaux alcalins.
Cariou Jean
Castetbon Alain
Kneip Alain
Covalsud Sarl
Smart & Biggar
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