Реферат: A series of Pd-Rh/alumina catalysts with total precious metals loading of 0.2 wt.% was prepared by means of mechanical mixing of monometallic precursors and incipient wetness impregnation of the support with dual complex salt. Gamma and delta alumina supports were obtained from commercial aluminum hydroxide by calcinations at 720 and 1000 °C respectively. All samples were exposed for in situ prompt thermal aging procedure, and characterized by EPR spectroscopy, UV–Vis diffuse reflectance spectroscopy and photoluminescence spectroscopy. It was shown that concentration of donor sites of the supports differs according to distinctions between values of their specific surface areas. The nature of the support was found to have strong effect on high temperature stability of the samples, but phase transformation of γ-Al2O3 at high temperatures does not play dramatic role for the deactivation of bimetallic Pd-Rh active species anchored to the electron-donor site of the support

Библиографическая ссылка: Kenzhin R.M. , Vedyagin A.A. , Volodin A.M. , Stoyanovskii V.O. , Plyusnin P.E. , Shubin Y.V. , Mishakov I.V.
The Effect of the Support Phase Transformations on the Catalytic Activity, Thermal Stability and State of Active Sites in Pd-Rh/Alumina Three-Way Catalysts
EuropaCat-XIII: 13th European Congress on Catalysis 27-31 Aug 2017