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

Authors: SEDA KARABOĞA

Abstract: The study reports preparation, characterization, and catalytic activity of Pd⁰/WO₃ nanoparticles in H2 evolution from dimethylamine borane (DMAB). The active catalyst called Pd⁰/WO₃ NPs were obtained from the in situ reduction of Pd²⁺/WO₃ precatalyst and tested in H₂ releasing from DMAB. Pd⁰/WO3 NPs were found as remarkable catalysts providing a turnover frequency value of 948.0 h^-1 in H₂ 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 Pd⁰/WO₃ NPs in H₂ generation from DMAB. Pd⁰/WO₃ NPs were found as active catalysts even after the 6th run of dehydrogenation reaction. The report also covers the kinetic performance of the catalyst.

Keywords: Pd⁰ Nanoparticles, tungsten(VI) Oxide, dehydrogenation, dimethylamine Borane, heterogeneous Catalyst

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