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In situ prepared tungsten(VI) oxide supported Pd0 NPs, remarkable activity and reusability in H2 releasing from dimethylamine borane

The study reports preparation, characterization, and catalytic activity of $Pd^0 /WO_3$ nanoparticles in $H_2$ evolution from dimethylamine borane (DMAB). The active catalyst called $Pd^0 /WO_3 NPs$ were obtained from the in situ reduction of $Pd^{2+}/WO_3$ precatalyst and tested in $H_2$ releasing from DMAB. Pd0 /WO3 NPs were found as remarkable catalysts providing a turnover frequency value of 948.0 $h^{-1}$ in $H_2$ releasing from DMAB at 60.0 ± 0.5 °C. The results of some advanced analytical techniques reveal that Pd0 NPs show uniform dispersion on the surface of tungsten(VI) oxide (WO3 ) with 5.85 ± 0.57 nm of particle size. The reducible nature of tungsten(VI) oxide improves the catalytic efficiency of $Pd^0 /WO_3$ NPs in $H_2$ generation from DMAB. $Pd^0 /WO_3$ NPs were found as active catalysts even after the 6th run of dehydrogenation reaction. The report also covers the kinetic performance of the catalyst.

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