PROCESS FOR WATER OXIDATION COMPRISING THE USE OF A POLYOXOMETALATE COMPOUND AS WATER OXIDATION CATALYST

摘要

The present invention relates to a process for water oxidation using a polyoxometalate compound of formula (I) as water oxidation catalyst. It is also related to some polyoxometalate compounds. Formula (I): [(M9(OH) 3(H20)6(HP04)2(L) 3][A] n wherein: M is selected from the group consisting of Co, Mn, and Fe; L is selected from the ligand of formula YM'₉O₃₄ and Υ₂Μ₁₅Ο₅₆; Y is selected from the group consisting of P, Si, Ge, and As; M' is selected from the group consisting of W, Mo, and V; A is a cation selected from the group consisting of Li⁺, Na⁺, K⁺, Rb⁺, Cs⁺, Ca²⁺, Ba^{2 +}, Mg²⁺, and mixture thereof; and n is an integer selected from 8 and 16, being the sum of positive charges of A_n equal to 16.