Effect of Cs content on CsxH5−xPMo10V2O40 properties and oxidative catalytic activity on starch oxidation by H2O2

Sodium ion intercalation and multi redox behavior of a Keggin type polyoxometalate during [PMo10V2O40]5−to [PMo10V2O40]27−as a cathode material for Na-ion rechargeable batteries

“…The difference in the wavenumbers is due to the effect of electronegativity of large Na + ions around the cluster. 38 Therefore, the FT-IR spectrum conrms the successful formation of the Keggin structure of H-POM and Na-POM. 39 TGA illustrates the weight loss of the H-POM and Na-POM starting above 45 C and continuing to 240 C, which indicates the removal of lattice bound water molecules from the cluster, 40 given in Fig.…”

Hydrogen peroxide as an oxidant in starch oxidation using molybdovanadophosphate for producing a high carboxylic content

“…To compare with the previous work, 25,26 we increased the content of vanadium to realize the controllable selective oxidation. The oxidized starch catalyzed by NPVMo was carried out under the protocol conditions such as, 1 g starch, 0.1 mL (0.001 wt%) of catalyst, 0.5 mL of distilled water, 2.5 mL of hydrogen peroxide at 70 C for 10 h. The catalyst showed good activity on oxidizing starch, the carboxyl content can reach 0.648 molCO 2 H per 100 g. Therefore, it can be concluded that increasing the content of vanadium can improve the activity of molybdovanadophosphates.…”

“…24 Our group had paid more attention to the investigation of the Keggin structure PV n Mo 12Àn O 40 (3+n)À in terms of oxidative catalysis. [25][26][27] The proposed reaction based on vanadium substituted POMs includes hydroxyl and hydroperoxy radicals generated by the homolytic cleavage of H 2 O 2 and its vanadium center; whose mechanism is similar to that of Fenton type reactions. The most important aspect is to obtain the high selectivity through the right catalysts.…”

Fabrication of mesoporous POMs/SiO2nanofibers through electrospinning for oxidative conversion of biomass by H2O2and oxygen

“…43 In our previous work, we developed a POMs/ H 2 O 2 system in oxidation of starch. 32 It was found that PMo 10 -…”

“…Oxidation of biomass by H 2 O 2 or O 2 has attracted much attention due to the various products available for wide application 31 including oxidative starch, 32 maleic anhydride from C5-biomass or C6-based polysaccharides, 33–35 formic acid from cellulose carbohydrates, 36–40 and 2,5-furan dicarboxylic acid (FDCA) or DFF from 5-HMF. 41,42 The above oxidation could be achieved by using environmental benign oxidants of H 2 O 2 or O 2 combined with various homogeneous or heterogeneous catalysts, including metal oxides, Fe Fenton's reagents and polyoxometalates (Tables S1 and S2 † ).…”