4 research outputs found
Development and Characterization of Catalysts for the Selective Hydrogenolysis of Sugar Alcohols
No full textStructure of ReO<sub><i>x</i></sub> Clusters Attached on the Ir Metal Surface in Ir–ReO<sub><i>x</i></sub>/SiO<sub>2</sub> for the Hydrogenolysis Reaction
No full textThe structural change of Ir/SiO<sub>2</sub> and Ir–ReO<sub><i>x</i></sub>/SiO<sub>2</sub> during the temperature programmed
reduction with H<sub>2</sub> was investigated using in situ Ir <i>L</i><sub>3</sub>-edge and Re <i>L</i><sub>3</sub>-edge quick-scanning X-ray absorption fine structure in the combination
of temperature programmed reduction with H<sub>2</sub>, XRD, the measurement
of CO adsorption, Raman spectroscopy, and X-ray photoelectron spectroscopy.
The metal oxide on Ir–ReO<sub><i>x</i></sub>/SiO<sub>2</sub> was much more easily reduced than that on monometallic Ir/SiO<sub>2</sub> and ReO<sub><i>x</i></sub>/SiO<sub>2</sub>, which
is explained by the interaction between trioxo Re species and the
IrO<sub>2</sub> phase. The metal structure of Ir–ReO<sub><i>x</i></sub>/SiO<sub>2</sub> constructed after reduction at 485–595
K is the cuboctahedron Ir metal particles covered with three-dimensional
ReO<sub><i>x</i></sub> clusters
