Introduction.- Heteropoly compounds as ammoxidation catalysts.- Transition metal substituted salt of tungsten based polyoxometalates supported mesoporous silica as a Catalyst for Organic Transformation reactions.- Vanadium substituted tugstophosphoric acid supported on A heterogeneous catalyst for selective oxidative cleavage of olefins to carbonyl compounds at room temperature.- Supported Heteropoly Acids and Multicomponent Polyoxometalates as Eco-Friendly Solid Catalysts for Bulk and Fine Chemicals Synthesis.- Glycerol Etherification with light Alcohols Promoted by Supported H3PW12O40.- Alkoxylation of Terpenes over Tungstophosphoric Acid Immobilised on Silica Support.- Effect of acidity, structure and stability of supported 12-tungstophosphoric acid on catalytic reactions.- Biodiesel production over 12-tungstosilisic acid anchored to different mesoporous silica supports.- Solvent free selective oxidation of benzyl alcohol to benzaldehyde over mono lacunary phosphomolybdate supported onto hydrous zirconia.- H3PMo12O40 A Versatile and Efficient Bifunctional Catalyst for the Oxidation and Esterification Reactions.- Electrochemical/ElectroCatalytic Applications of Polyoxometalates.