Liliana Beatriz Pierella
National Scientific and Technical Research Council
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Publication
Featured researches published by Liliana Beatriz Pierella.
RSC Advances | 2016
Candelaria Leal Marchena; Clara Saux; Robinson Dinamarca; Gina Pecchi; Liliana Beatriz Pierella
Alkaline ANbO3 (A = Li, Na, K) niobates with perovskite-type structure were prepared by a sol gel method, characterized by XRD, BET, TG/DTA, O2-TPD, DRS UV-Vis and FTIR and evaluated as heterogeneous catalysts for the selective oxidation of dipropyl sulfide (DPS) to its corresponding sulfoxide. The effects of different reaction parameters were evaluated, such as catalyst weight, the solvent and oxidant nature, reaction temperature and reuse. In order to gain better knowledge of the oxidation process, a kinetic study of the reaction was carried out. The global pseudo first order constant, the initial reaction rate and the apparent activation energy were calculated, and simplified reaction steps are proposed. KNbO3 showed the highest catalytic activity and sulfoxide selectivity with a periodic trend of KNbO3 > NaNbO3 ∼ LiNbO3.
International Journal of Chemical Reactor Engineering | 2015
F. Azzolina Jury; Isabelle Polaert; Liliana Beatriz Pierella; Lionel Estel
Abstract Intensification process by the use of microwave heating was investigated by testing two catalyst configurations on the selective styrene oxidation for benzaldehyde production. The oxidation reaction was studied over Co-ZSM-11 and Fe-ZSM-11 catalysts. Their catalytic activity was evaluated by using these catalysts in two different forms: compacted pellets and fine particles. Thus, two reaction systems were studied under microwave: a batch system with fine particles in suspension (system 1) and a recirculating batch liquid through a fixed bed system comprising the compact catalyst pellets (system 2). Despite a better microwave interaction with the catalyst in the pellet form, the fixed bed configuration did not lead to a significant intensification of the process. At 60°C, the styrene molar conversions by using Co-ZSM-11 catalyst were found to be 33% and 3% for systems 1 and 2, respectively. With fine particles, the catalytic activity was higher since the styrene oxidation was able to occur without significant internal diffusional resistance of the reagents toward the active acid sites of the zeolite structure.
Applied Catalysis B-environmental | 2015
Silvina del Valle Gómez; Candelaria Leal Marchena; Maria Soledad Renzini; Luis Rene Pizzio; Liliana Beatriz Pierella
Applied Catalysis A-general | 2004
Oscar A. Anunziata; Andrea R. Beltramone; Zoran Juric; Liliana Beatriz Pierella; Félix G. Requejo
Applied Catalysis B-environmental | 2016
Candelaria Leal Marchena; Laura Lerici; Soledad Renzini; Liliana Beatriz Pierella; Luis R. Pizzio
Applied Catalysis A-general | 2013
Federico Azzolina Jury; Isabelle Polaert; Lionel Estel; Liliana Beatriz Pierella
Catalysis Communications | 2014
Federico Azzolina Jury; Isabelle Polaert; Liliana Beatriz Pierella; Lionel Estel
Procedia Materials Science | 2015
Laura Lerici; María S. Renzini; Liliana Beatriz Pierella
Applied Catalysis B-environmental | 2017
Silvina del Valle Gómez; Laura Lerici; Clara Saux; Ana L. Pérez; Carlos D. Brondino; Liliana Beatriz Pierella; Luis R. Pizzio
Journal of Porous Materials | 2016
Clara Saux; Candelaria Leal Marchena; Luis R. Pizzio; Liliana Beatriz Pierella