Optical Spectroscopy Methods in the Estimation of the Thermal Stability of Bimetallic Pd Rh/Al2O3 Three-Way Catalysts - Conference attendances | Sciact - CRIS-system of Boreskov Institute of Catalysis

Optical Spectroscopy Methods in the Estimation of the Thermal Stability of Bimetallic Pd Rh/Al2O3 Three-Way Catalysts Conference attendances

Language

Английский

Participant type

Стендовый

Conference

Eleventh International Congress on Catalysis and Automotive Pollution Control
29-31 Oct 2018 , Brussels

Authors

Stoyanovskii Vladimir Olegovich ¹ , Vedyagin Aleksey Anatolʹevich ^1,2 , Volodin Alexander Mikhailovich ¹ , Kenzhin Roman Mugaramovich ¹ , Slavinskaya Elena Markovna ¹ , Plyusnin Pavel Evgenʹevich ^3,4 , Shubin Yury Viktorovich ^3,4

Affiliations

1	Boreskov Institute of Catalysis SB RAS
2	National Research Tomsk Polytechnic University
3	Nikolaev Institute of Inorganic Chemistry SB RAS
4	Novosibirsk National Research University

The proposed approach to diagnostics of the migration processes taking place in Rh/Al2O3 and Pd-Rh/Al2O3 catalysts based on the luminescence of Rh3+ ions stabilized within alpha phase was demonstrated as highly sensitive one. An introduction of lanthanum in the form of isolated ions homogeneously distributed within the bulk of γ-Al2O3 besides the thermal stabilization effect leads to an appearance of new luminescence sites of Rh3+ in the bulk of alumina at temperatures near 800 °C, when gamma phase only is registered by the X-ray diffraction analysis. The position of allowed transitions 1A1g→ 1T1g, 1T2g for Rh3+ allows one to differentiate the luminescence sites for such oxide matrices as α-Al2O3, LaAl11O18 and LaAlO3.

Stoyanovskii V.O. , Vedyagin A.A. , Volodin A.M. , Kenzhin R.M. , Slavinskaya E.M. , Plyusnin P.E. , Shubin Y.V.
Optical Spectroscopy Methods in the Estimation of the Thermal Stability of Bimetallic Pd Rh/Al2O3 Three-Way Catalysts
Eleventh International Congress on Catalysis and Automotive Pollution Control 29-31 Oct 2018