| abstract |
The invention relates to polyoxometalates represented by the formula (A n )m+{M' s [M''M 12 X 8 O y R z H q ]} m- or solvates thereof, corresponding supported polyoxometalates, and processes for their preparation, as well as corresponding metal-clusters, optionally in the form of a dispersion in a liquid carrier medium or immobilized on a solid support, and processes for their preparation, as well as their use in reductive conversion of organic substrate. |