Optical Spectroscopy Methods in the Estimation of the Thermal Stability of Bimetallic Pd Rh/Al2O3 Three-Way Catalysts
Доклады на конференциях
| Язык |
Английский |
| Тип доклада |
Стендовый |
| Конференция |
Eleventh International Congress on Catalysis and Automotive Pollution Control
29-31 окт. 2018
,
Международная конференция, Brussels
|
| Авторы |
Стояновский Владимир Олегович
1
, Ведягин Алексей Анатольевич
1,2
, Володин Александр Михайлович
1
, Кенжин Роман Мугарамович
1
, Славинская Елена Марковна
1
, Плюснин Павел Евгеньевич
3,4
, Шубин Юрий Викторович
3,4
|
| Организации |
| 1 |
Институт катализа им. Г.К. Борескова СО РАН
|
| 2 |
Национальный исследовательский Томский политехнический университет
|
| 3 |
Институт неорганической химии им. А.В. Николаева СО РАН
|
| 4 |
Новосибирский национальный исследовательский государственный университет
|
|
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.