相原健司君が中心となって行ったグリセロールの水素化分解におけるWO3とAl2O3界面の影響に関する研究成果がCatal. Sci. Tech.誌 (RSC)にAcceptされました。Our paper reporting the effect of Perimeter Interface Length between 2D WO3 Monolayer Domain and γ-Al2O3 was accepted in Catal. Sci. Tech.

The relationship between the structure of W species on Pt/WO₃/Al₂O₃catalysts and their activity for selective hydrogenolysis of glycerol to 1,3-propanediol was investigated. Structural analysis by spectroscopic techniques including X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and X-ray adsorption fine structure (XAFS) revealed the formation of two-dimensional WO₃monolayer domains on the surface of γ-Al₂O₃ at a WO₃loading level of below 20 wt%. Evaluation of the reduction properties of W species by H₂temperature programed reduction (TPR) suggested the presence of two kinds of W species with different reduction properties loaded on γ-Al₂O₃, and W species at the edge of a WO₃domain was reduced more easily than that inside of a WO₃domain. Furthermore, the length of the perimeter interface between a two-dimensional WO₃monolayer domain and γ-Al₂O₃(W-Al perimeter interface) could be estimated from the difference in their reducibility. The positive correlation between W-Al perimeter interface length and the yield of 1,3-propanediol in hydrogenolysis of glycerol indicated that a W-(OH)-Al site at the W-Al perimeter interface functioned as a main active site.