Ara es mostren els items 25-44 de 44

    • Pd/CeO2 catalysts prepared by solvent-free mechanochemical route for methane abatement in natural gas fueled vehicles 

      Danielis, Maila; Colussi, Sara; Llorca Piqué, Jordi; Trovarelli, Alessandro (American Chemical Society (ACS), 2021-03-15)
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      Accés obert
      The increasing diffusion of alternative mobility solutions, ranging from electric technologies to natural gas fueled vehicles (NGVs), has led to a progressive life-cycle analysis approach of their environmental impact in ...
    • 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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      Accés restringit per política de l'editorial
      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 ...
    • Relevant parameters for the mechanochemical synthesis of bimetallic supported catalysts 

      Danielis, Maila; Braga, Andrea; Jiménez Divins, Nuria; Llorca Piqué, Jordi; Trovarelli, Alessandro; Colussi, Sara (Multidisciplinary Digital Publishing Institute (MDPI), 2023-12-14)
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      Accés obert
      Mechanochemical synthesis for the preparation of bimetallic catalysts is gaining increasing interest, and in recent years, some important milestones have been reached. However, the complexity of mechanochemically prepared ...
    • 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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      Accés obert
      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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      Accés restringit per política de l'editorial
      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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      Accés restringit per política de l'editorial
      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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      Accés obert
      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 ...
    • Simultaneous removal of soot and NOx, over K- and Ba-doped ruthenium supported catalysts 

      Matarrese, Roberto; Aneggi, Eleonora; Castoldi, Lidia; Llorca Piqué, Jordi; Trovarelli, Alessandro; Lietti, Luca (2016-06-01)
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      Accés obert
      Ruthenium-based materials are investigated for the simultaneous removal of soot and NOx and their behavior is compared with that of model Pt-Ba/Al2O3 and Pt-K/Al2O3 catalysts.; The materials, 1%wt Ru-10%wt AM/MO (AM = Ba ...
    • Solvent-free selective oxidation of benzyl alcohol using Ru loaded ceria-zirconia catalysts 

      Aneggi, Eleonora; Campagnolo, Filippo; Segato, Jacopo; Zuccaccia, Daniele; Baratta, Walter; Llorca Piqué, Jordi; Trovarelli, Alessandro (2023-04-01)
      Article
      Accés restringit per política de l'editorial
      In addition of a key catecholamine neurotransmitter, dopamine is is the metabolite predominantly produced by specific types of tumors (e.g. paragangliomas and neuroblastomas), which cannot be diagnosed using conventional ...
    • Structural and electrocatalytic properties of molten core Sn@SnOx nanoparticles on ceria 

      Bardini, Luca; Pappacena, Alfonsina; Domínguez Escalante, Montserrat; Llorca Piqué, Jordi; Boaro, Marta; Trovarelli, Alessandro (2016-11-15)
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      Accés obert
      The morphological and chemical modifications following reduction in hydrogen at 873 K of stannic oxide deposited on ceria particles were studied in order to gain insights into the nature of Ce-Sn interaction under reducing ...
    • Structural evolution of bimetallic PtPd/CeO2 methane oxidation catalysts prepared by dry milling 

      Mussio, Andrea; Danielis, Maila; Jiménez Divins, Nuria; Llorca Piqué, Jordi; Colussi, Sara; Trovarelli, Alessandro (2021-06-02)
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      Accés obert
      Bimetallic Pt–Pd catalysts supported on ceria have been prepared by mechanochemical synthesis and tested for lean methane oxidation in dry and wet atmosphere. Results show that the addition of platinum has a negative effect ...
    • 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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      Accés restringit per política de l'editorial
      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 ...
    • Surface faceting and reconstruction of ceria nanoparticles 

      Yang, Chengwu; Yu, Xiaojuan; Heissler, Stefan; Nefedov, Alexei; Colussi, Sara; Llorca Piqué, Jordi; Trovarelli, Alessandro; Wang, Yuemin; Woell, Christof (2017-01-02)
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      Accés obert
      The surface atomic arrangement of metal oxides determines their physical and chemical properties, and the ability to control and optimize structural parameters is of crucial importance for many applications, in particular ...
    • Sustainable solvent-free selective oxidation of benzyl alcohol using Ru(0) supported on alumina 

      Aneggi, Eleonora; Campagnolo, Filippo; Zuccaccia, Daniele; Baratta, Walter; Llorca Piqué, Jordi; Trovarelli, Alessandro (2023-04-22)
      Article
      Accés obert
      The selective oxidation of primary alcohols into their corresponding carbonyl compounds is challenging because of the easy over oxidization to acids and esters. The traditional reaction requires large amounts of solvent ...
    • The dynamics of PdO-Pd phase transformation in the presence of water over Si-doped Pd/CeO 2 methane oxidation catalysts 

      Toso, Alessandra; Colussi, Sara; Llorca Piqué, Jordi; Trovarelli, Alessandro (2019-03-25)
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      Accés obert
      One of the main issues for the catalytic abatement of methane from natural gas fueled vehicles over Pd-based materials is due to the large amount of water vapor in the exhausts, which can severely deactivate the catalyst. ...
    • 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)
      Article
      Accés restringit per política de l'editorial
      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 effect of milling parameters on the mechanochemical synthesis of Pd-CeO2 methane oxidation catalysts 

      Danielis, Maila; Colussi, Sara; de Leitenburg, Carla; Soler Turu, Lluís; Llorca Piqué, Jordi; Trovarelli, Alessandro (2019-01-01)
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      Accés obert
      The preparation of catalytic materials via mechanochemical routes is a very promising alternative to complex wet chemical syntheses due to its simplicity, versatility and ecological advantages. The mechanical mixing of Pd ...
    • 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)
      Article
      Accés restringit per política de l'editorial
      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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      Accés obert
      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 ...
    • Water splitting reaction on Ce0.15Zr0.85O2 driven by surface heterogeneity 

      Pappacena, Alfonsina; Boaro, Marta; Armelao, Lidia; Llorca Piqué, Jordi; Trovarelli, Alessandro (2016)
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      Accés obert
      Ce0.15Zr0.85O2 was investigated in the two-step water splitting reaction. High-temperature treatment in N-2 induced compositional and structural heterogeneities which contributed to a six-fold increase of H-2 yield after ...