Nanotitania supported ruthenium(0) nanoparticles as active catalyst for releasing hydrogen from dimethylamine borane

Date

2023-01-01

Author

Hammoodi Yousif Al-Areedhee, Ahmed
Karaboğa, Seda
Morkan, İzzet Amour
Özkar, Saim

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We reports the ex situ preparation of nanotitania supported ruthenium(0) nanoparticles (NPs) and their catalytic testing in dehydrogenation of dimethylamine borane (DMAB) in toluene solvent. Ru0/TiO2 NPs are prepared following a 2-step process: Ru3+ ions are first impregnated from the aqueous solution on titania nanopowder and then, reduced by aqueous solution of sodium borohydride. The prepared Ru0/TiO2 NPs are dried, bottled under inert N2 gas atmosphere, and used for characterization by XRD (X-ray powder diffraction), TEM (transmission electron microscopy), ICP-OES (inductively coupled plasma optical emission spectroscopy) and XPS (X-ray photoelectron spectroscopy). Ru0/TiO2 NPs with various Ru loadings are tested as catalysts in hydrogen generation from DMAB and the Ru0/TiO2 (0.48% wt. Ru) with an average diameter of 6.7 ± 1.3 nm is found to have the highest initial turnover frequency value of 1700 h−1 for the release of 1.0 mol H2 per mole of DMAB at 60 °C. Results of the recyclability test indicate quite high durability of Ru0/TiO2 NPs in dehydrogenation of DMAB.

Subject Keywords

Dehydrogenation, Dimethylamine borane, Heterogeneous catalyst, Ru0 nanoparticles, Titanium dioxide

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85173042469&origin=inward
https://hdl.handle.net/11511/105870

Collections

Graduate School of Natural and Applied Sciences, Article