Thermal Aging Behavior of Pt-only TWC Converters Under Simulated Exhaust Conditions: Effect of Rare Earths (CeO2, La2O3) and Alkali (Na) Modifiers

• Published in: Topics in catalysis Vol. 54; no. 16-18; pp. 1124 - 1134
• Main Authors: Matsouka, V., Konsolakis, M., Yentekakis, I. V., Papavasiliou, A., Tsetsekou, A., Boukos, N.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.11.2011
• Subjects: Catalysis; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Original Paper; Pharmacy; Physical Chemistry; Simulated exhaust conditions; Na; Thermal aging; Catalyst promotion; TWCs; La; Platinum; FT-IR; CeO; DRIFT; O

In the present work, the feasibility to design monometallic (Pt-only), low metal loading (0.1 wt% Pt) three-way catalytic converters (TWCs), with comparable catalytic efficiency and thermostability to that of commercial bimetallic Pt/Rh TWCs has been explored. It is shown that this can be accomplish...