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http://dx.doi.org/10.1016/j.jcat.2005.01.003

has been cited by the following article:

• TITLE: Effect of Potassium on Sol-Gel Cerium and Lanthanum Oxide Catalysis for Soot Combustion

  AUTHORS: Daniela Salinas, Gina Pecchi, Vicente Rodríguez, José Luis García Fierro

  KEYWORDS: Sol-Gel, Potassium, Cerium, Lanthanum, Soot Combustion

  JOURNAL NAME: Modern Research in Catalysis, Vol.4 No.3, July 17, 2015

  ABSTRACT: The catalytic activity in the soot combustion is reported for a series of potassium-promoter alumina supported catalysts prepared by the sol-gel method to be used in the catalytic combustion of soot. The studied systems correspond to CeO2-Al2O3 and La2O3-Al2O3 with charges of 3 and 5 wt% of CeO2 and La2O3. Potassium impregnation is performed to reach 3 atoms of K per nm2 of the mixed oxide. The effect of the potassium incorporation increases its reducibility, decreases the surface area and forms a new type of oxygen that is stronger than the oxygen in mixed oxides with similar chemical nature. The existence of potassium oxides, K2O and oxygen responsible for the vacancies and/or lattice defects (O2−) are related to good catalytic activity. Additionally, the presence of alkali affects the structural and textural characteristics of the catalyst, promoting the catalytic activity in soot combustion.