TY  - JOUR
TI  - Reducible tungsten(VI) oxide-supported ruthenium(0) nanoparticles: highly active catalyst for hydrolytic dehydrogenation of ammonia borane
AB  - Reducible WO3 powder with a mean diameter of 100 nm is used as support to stabilize ruthenium(0) nanoparticles. Ruthenium(0) nanoparticles are obtained by $NaBH_4$ reduction of ruthenium(III) precursor on the surface of $WO_3$ support at room temperature. Ruthenium(0) nanoparticles are uniformly dispersed on the surface of tungsten(VI) oxide. The obtained $R^u0/WO_3$ nanoparticles are found to be active catalysts in hydrolytic dehydrogenation of ammonia borane. The turnover frequency (TOF) values of the $R^u0/WO_3$ nanocatalysts with the metal loading of 1.0%, 2.0%, and 3.0% wt. Ru are 122, 106, and 83 $min^{–1}$, respectively, in releasing hydrogen gas from the hydrolysis of ammonia borane at 25.0 °C. As the  $R^u0/WO_3$ (1.0% wt. Ru) nanocatalyst with an average particle size of 2.6 nm provides the highest activity among them, it is extensively investigated. Although the Ru0/WO3 (1.0% wt. Ru) nanocatalyst is not magnetically separable, it has extremely high reusability in the hydrolysis reaction as it preserves 100% of initial catalytic activity even after the 5th run of hydrolysis. The high activity and reusability of  $R^u0/WO_3$ (1.0% wt. Ru) nanocatalyst are attributed to the favorable metal-support interaction between the ruthenium(0) nanoparticles and the reducible tungsten(VI) oxide. The high catalytic activity and high stability of  $R^u0/WO_3$ nanoparticles increase the catalytic efficiency of precious ruthenium in hydrolytic dehydrogenation of ammonia borane.
AU  - Akbayrak, Serdar
AU  - TONBUL, YALCIN
AU  - Özkar, Saim
DO  - 10.55730/1300-0527.3607
PY  - 2023
JO  - Turkish Journal of Chemistry
VL  - 47
IS  - 5
SN  - 1300-0527
SP  - 1224
EP  - 1238
DB  - TRDizin
UR  - http://search/yayin/detay/1208489
ER  -