Now showing items 8-18 of 18

  • Methanol steam reforming behavior of copper impregnated over CeO2-ZrO2 derived from a surfactant assisted coprecipitation route 

    Llorca Piqué, Jordi; Colussi, Sara; Domínguez Escalante, Montserrat; Trovarelli, Alessandro; Gayen, Arup; Das, Dipak (2015-09-07)
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    A series of ceria-zirconia solid solutions has been prepared by a surfactant assisted coprecipitation method. After impregnation of copper, their activities have been assessed for methanol steam reforming. The results ...
  • Mixed iron-erbium vanadate NH3-SCR catalysts 

    Casanova, Marzia; Llorca Piqué, Jordi; Schermanz, Karl; Trovarelli, Alessandro; Sagar, Amod (2015-03-01)
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    A series of SCR catalysts of mixed iron-erbium vanadates supported on TiO2-WO3-SiO2 were prepared and their reduction, textural, structural and morphological properties characterized by temperature programmed reduction, ...
  • PdO hydrate as an efficient and recyclable catalyst for the Suzuki-Miyaura reaction in water/ethanol at room temperature 

    Amoroso, Francesco; Colussi, Sara; Del Zotto, Alessandro; Llorca Piqué, Jordi; Trovarelli, Alessandro (2011-02-12)
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    PdO·1.4H2O 1 prepared in our laboratories, as well as commercially available palladium oxides 2–4 have been found to act as efficient catalysts for the Suzuki–Miyaura reaction in ethanol/water mixture at room temperature ...
  • Room temperature oxidation of formaldehyde on Pt-based catalysts: A comparison between ceria and other supports (TiO2, Al2O3 and ZrO2) 

    Colussi, Sara; Boaro, Marta; De Rogatis, Loredana; Pappacena, Alfonsina; de Leitenburg, Carla; Llorca Piqué, Jordi; Trovarelli, Alessandro (2015-09-15)
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    Platinum-based catalysts for the room temperature removal of formaldehyde are prepared on ceria and other supports (TiO2, Al2O3 and ZrO2) for comparison, starting from chloride and nitrate precursors. The behaviour towards ...
  • Room-temperature Suzuki-Miyaura reaction catalyzed by Pd supported on rare earth oxides: Influence of the point of zero charge on the catalytic activity 

    Amoroso, Francesco; Colussi, Sara; del Zotto, Alessandro; Llorca Piqué, Jordi; Trovarelli, Alessandro (2013-06-01)
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    Five Pd/REO (rare earth oxide) compounds (Pd/La2O3, Pd/CeO2, Pd/Pr6O11, Pd/Sm2O 3, and Pd/Gd2O3) have been successfully used as precatalysts in the Suzuki-Miyaura C-C cross-coupling reaction of aryl bromides with arylboronic ...
  • Shape-dependent activity of ceria in soot combustion 

    Aneggi, Eleonora; Wiater, Dawid; de Leitenburg, Carla; Llorca Piqué, Jordi; Trovarelli, Alessandro (2014-01)
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    In this study, a series of conventional polycrystalline ceria and single-crystalline ceria nanorods and nanocubes were prepared by hydrothermal methods, and their structural, redo; and morphological properties were ...
  • Silver-based catalytic materials for the simultaneous removal of soot and NOx 

    Castoldi, Lidia; Aneggi, Eleonora; Matarrese, Roberto; Bonzi, Rossella; Llorca Piqué, Jordi; Trovarelli, Alessandro; Lietti, Luca (2015-12-01)
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    The potential of silver-based catalysts in the simultaneous removal of particulate matter (soot) and NOxis investigated in this work and compared with that of a model Pt-Ba/Al2O3catalyst. The Ag (5 wt%) - Ba (10 wt%)/MO ...
  • Structure and morphology of Pd/Al2O3 and Pd/CeO2/Al2O3 combustion catalysts in Pd–PdO transformation hysteresis 

    Colussi, Sara; Trovarelli, Alessandro; Vesselli, Erik; Baraldi, Alessandro; Comelli, Giovanni; Groppi, Gianpiero; Llorca Piqué, Jordi (2010)
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    Catalytic combustion of methane has been studied for many years due to its applications in power generation and emissions clean-up. Among different catalysts, Pd-based materials are the most active for the catalytic ...
  • The effect of ceria on the dynamics of CuO-Cu2O redox transformation: CuO-Cu2O hysteresis on ceria 

    Colussi, Sara; Amoroso, Francesco; Katta, Lakshmi; Llorca Piqué, Jordi; Trovarelli, Alessandro (2014-06-01)
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    CuO supported on ceria and alumina is prepared by incipient wetness impregnation and its redox behavior is investigated by means of XRD, XPS and TPO experiments. CuO on ZrO2 and on ceria-zirconia are also synthesized for ...
  • The formation of nanodomains of Ce6O11 in ceria catalyzed soot combustion 

    Aneggi, Eleonora; Jiménez Divins, Nuria; de Leitenburg, Carla; Llorca Piqué, Jordi; Trovarelli, Alessandro (2014-04)
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    The behavior of a series of CeO2 catalysts in soot combustion reaction was investigated by HRTEM and XPS. It is shown that nanodomains of reduced ceria in the form of Ce6O11 develop during reaction under oxygen-containing ...
  • The influence of nano-architectured CeOx supports in RhPd/CeO2 for the catalytic ethanol steam reforming reaction 

    Jiménez Divins, Nuria; Casanovas, A.; Xu, W.; Senanayake, S. D; Wiater, Dawid; Trovarelli, Alessandro; Llorca Piqué, Jordi (2015-09-15)
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    The ethanol steam reforming (ESR) reaction has been tested over RhPd supported on polycrystalline ceria in comparison to structured supports composed of nanoshaped CeO2 cubes and CeO2 rods tailored toward the production ...