Solvent free clean selective oxidation of alcohols catalyzed by mono transition metal (Co, Mn, Ni)-substituted Keggin-phosphomolybdates using hydrogen peroxide

Oxidation of Cyclohexene in the Presence of Transition‐Metal‐Substituted Phosphotungstates and Hydrogen Peroxide: Catalysis and Reaction Pathways

“…Polyoxometalates are supposed to have remarkable hydrolytic stability and oxidative stability because they have good catalytic performances in the oxidation of organic substrates with aqueous H 2 O 2 . Although some researchers have demonstrated that the Keggin‐type catalyst precursors, such as [PW 12 O 40 ] 3− , [PW 11 O 39 ] 7− , and [PMo 12 O 40 ] 3− , are labile and can degrade to small active species in aqueous H 2 O 2 , relevant research works paid little attention to the effect of H 2 O 2 on the Keggin‐type transition metal‐substituted polyoxometalates (TMSPs).…”

“…To date, many good examples of TMSPs‐based catalytic systems have been well documented . Amongst the numerous polyoxometalate catalysts, the Keggin‐type TMSPs have been extensively researched in homogeneous and heterogeneous catalysis for oxidative reactions using H 2 O 2 as the oxygen donor, such as hydroxylation of alkanes, epoxidation of alkenes, and oxidation of styrene and alcohols …”

One pot oxidative esterification of aldehyde over recyclable cesium salt of nickel substituted phosphotungstate

“…TMSPOMs comprises a new sub class of polyoxometalates in which the transition metals are incorporated into the lacuna created in the parent polyoxometalate, gaining tremendous attention in field of catalysis [12][13][14][15]. Among the various TMSPOMs, the nickel substituted species are of considerable interest because of their unique redox and catalytic properties.…”

Heteropoly Tungstate Supported on Metal Oxide Catalysts for Liquid Phase Oxidation of Benzyl Alcohol with Hydrogen Peroxide

“…As such, modified HPA catalysts, particularly those that may be easily prepared using a feasible support, open up a wide new possibilities to unravel the aforementioned problems. [15][16][17][18] As such, while metal or heteroatom substituted HPAs with an exotic variety of structures and compositions have been widely utilized in heterogeneous and/or homogeneous reactions, [19][20][21] it is highly desirable to support them on a porous solid substrate with unique catalytic and porous properties. The high surface area available for the supported HPA catalyst was found to promote diffusion of reactants/products and dispersion of active sites to warren high catalytic activity with improved product quality, reduced production costs as well as a prolonged catalyst life due to improved robustness, recovery, and recyclability.…”