Use of potassium conductors in the electrochemical promotion of environmental catalysis

• Published in: Catalysis today Vol. 146; no. 3; pp. 293 - 298
• Main Authors: de Lucas-Consuegra, Antonio, Dorado, Fernando, Jiménez-Borja, Carmen, Caravaca, Angel, Vernoux, Philippe, Valverde, José L.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 2009; Elsevier
• Subjects: Catalysis; Chemical Sciences; Chemistry; Electrochemical promotion; Electrochemistry; Environment and Society; Environmental catalysis; Environmental Sciences; Exact sciences and technology; General and physical chemistry; NEMCA effect; NO x storage/reduction; Potassium conductors; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Environmental catalysis; NEMCA effect; NO x storage/reduction; Electrochemical promotion; Potassium conductors; Water; Nitrogen oxide; NO; Oxidation reduction; Catalytic reaction; Potential; storage/reduction; Chemical reduction; Heterogeneous catalysis; Solid state; Pollutant; Storage; Technology; Atmosphere; Electrochemistry; Potassium; Catalyst
• ISSN: 0920-5861; 1873-4308
• DOI: 10.1016/j.cattod.2009.04.009

This study summarizes the effect of the electrochemical promotion of catalysis (EPOC) by using potassium conductors in environmental catalytic reactions applied to the removal of several automotive pollutants, such us CO, C 3H 6 and nitrogen oxides (N 2O and NO x ). It has been shown the extraordinarily potential of using Pt/K–βAl 2O 3 in a wide variety of environmental reactions (oxidation, reduction), activating the catalyst at lower reaction temperatures and decreasing the inhibitory effect of poisons such as water in the reaction atmosphere. In addition, a new application of potassium conductors-based electrochemical catalysts has been developed for the NO x storage/reduction process (NSR). The idea of coupling catalysis and solid-state electrochemistry on this process would allow to improve and simplify the current NSR technology. Finally, the results have been obtained under reaction conditions compatible with the treatment of automotive exhaust emissions. This demonstrates the potential for the practical use of the phenomenon of electrochemical promotion by using potassium conductors on this kind of process.