Ara es mostren els items 1-20 de 152

  • 4-Mercaptophenyldiphenylphosphine as linker to immobilize Pd onto the surface of magnetite nanoparticles. Excellent catalytic efficiency of the system after partial linker removal 

    Guarnizo, A; Angurell Purroy, Inmaculada; Rosell, Monica; Llorca Piqué, Jordi; Müller Jevenois, Guillermo; Seco, M; Rossell Alfonso, Josep Oriol (2015-10-27)
    Article
    Accés obert
    This journal is © The Royal Society of Chemistry. The molecule 4-mercaptophenyldiphenylphosphine (Sdp) has been synthesized for use as a linker to immobilize Pd nanoparticles onto the surface of magnetite nanoparticles. ...
  • A general approach to fabricate fe3O4 nanoparticles decorated with Pd, Au, and Rh: Magnetically recoverable and reusable catalysts for Suzuki C-C cross-coupling reactions, hydrogenation, and sequential reactions 

    Gonzàlez de Rivera, Ferran; Angurell Purroy, Inmaculada; Rossell Abrodos, Marta-Dacil; Erni, Rolf P.; Llorca Piqué, Jordi; Jiménez Divins, Nuria; Müller Jevenois, Guillermo; Seco García, Miquel Angel; Rossell Alfonso, Josep Oriol (2013-09-02)
    Article
    Accés restringit per política de l'editorial
    A facile strategy has been explored for loading noble metals onto the surface of ferrite nanoparticles with the assistance of phosphine-functionalized linkers. Palladium loading is shown to occur with participation of both ...
  • Alcohols and bio-alcohols steam and autothermal reforming in a membrane reactor 

    Llorca Piqué, Jordi; Hedayati, Ali (2014-11-28)
    Capítol de llibre
    Accés restringit per política de l'editorial
    Considerable work has been reported concerning catalytic steam reforming, partial oxidation and oxidative steam reforming (autothermal reforming) aimed at hydrogen generation from alcohol-water mixtures. They include ...
  • A luminescent hydrogel based on a new Au(i) complex 

    Gavara, Raquel; Llorca Piqué, Jordi; Lima, Joao Carlos; Rodríguez Raurell, Laura (2013-01-04)
    Article
    Accés restringit per política de l'editorial
    The reaction of the water soluble phosphine 1,3,5-triaza-7-phosphaadamantane (PTA) with [Au(CRC–C5H4N)]n yields the highly luminescent water soluble [(PTA)Au(4-pyridylethynyl)] complex. A detailed analysis of the compound ...
  • Ambient pressure photoemission spectroscopy reveals the mechanism of carbon soot oxidation in ceria-based catalysts 

    Soler Turu, Lluís; Casanovas Grau, Albert; Escudero, Carlos; Pérez-Dieste, Virginia; Aneggi, Eleonora; Trovarelli, Alessandro; Llorca Piqué, Jordi (2016-06-27)
    Article
    Accés restringit per política de l'editorial
    Removing soot is one of the most important challenges in minimizing the impact of combustion engines on the environment. Catalysts based on CeO2 have proved suitable to oxidize soot due to their capacity to store and release ...
  • A million-channel CO-PrOx microreactor on a fingertip for fuel cell application 

    Llorca Piqué, Jordi; Rosell, O.; Divins, N.J.; López, E.; Roig Costa, Maria; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; González de Rivera, F.; Rodríguez, L.I.; Seco, M. (2010)
    Article
    Accés restringit per política de l'editorial
    A silicon micromonolith containing ca.40000 regular channels of 3.3 μm in diameter per square millimeter has been successfully functionalized with anAu/TiO2 catalyst for CO preferential oxidation(CO-PrOx) in the presence ...
  • Anaerobic co-digestion of acetate-rich with lignin-rich wastewater and the effect of hydrotalcite addition 

    Rodriguez Chiang, Lourdes Maria; Llorca Piqué, Jordi; Dahl Olli, Peka (2016-10-01)
    Article
    Accés restringit per política de l'editorial
    The methane potential and biodegradability of different ratios of acetate and lignin-rich effluents from a neutral sulfite semi-chemical (NSSC) pulp mill were investigated. Results showed ultimate methane yields up to 333 ...
  • An efficient and reusable catalyst based on Pd/CeO2 for the room temperature aerobic Suzuki–Miyaura reaction in water/ethanol 

    Amoroso, Francesco; Colussi, Sara; Del Zotto, Alessandro; Llorca Piqué, Jordi; Trovarelli, Alessandro (2010)
    Article
    Accés restringit per política de l'editorial
    The Pd/CeO2 system behaves as an efficient precatalyst for the Suzuki–Miyaura cross-coupling under mild conditions (298 K, in air) in ethanol/water. A broad range of aryl bromides, including those deactivated, and ...
  • A plausible link between the asteroid 21 Lutetia and CH carbonaceous chondrites 

    Moyano Cambero, Carles E.; Trigo-Rodríguez, José María; Llorca Piqué, Jordi; Fornasier, Sonia; Barucci, Maria Antonietta; Rimola, Albert (2016-10-01)
    Article
    Accés obert
    A crucial topic in planetology research is establishing links between primitive meteorites and their parent asteroids. In this study, we investigate the feasibility of a connection between asteroids similar to 21 Lutetia, ...
  • Application of Fe-Zn-Mg-Al-O hydrotalcites supported Au as active nano-catalyst for fermentative hydrogen production 

    Wimonsong, Pornthip; Nitisoravut, Rachnarin; Llorca Piqué, Jordi (2014-10-01)
    Article
    Accés restringit per política de l'editorial
    Four different Au/Fe-Zn-Mg-Al-O hydrotalcites (HTs) supported Au catalysts were synthesized by the incipient impregnation method and characterized by X-ray photoelectron spectroscopy and scanning electron microcopy. ...
  • Au/TiO2 Lyogels for Hydrogen Production 

    Molins, Elies; Benito, Mónica; Mata, Ignasi; Martínez, Lester; Soler Turu, Lluís; Llorca Piqué, Jordi (Cambridge University Press, 2017-05-15)
    Article
    Accés restringit per decisió de l'autor
    Au/TiO2 lyogels have been prepared by sol-gel process followed by freeze-drying and calcination in order to induce crystallization. In the synthesis, a dispersion of AuNPs was added either during the sol-gel process or ...
  • Bio-ethanol steam reforming and autothermal reforming in 3- m channels coated with RhPd/CeO2 for hydrogen generation 

    Divins, N.J.; López, Eduardo; Rodríguez Martínez, Ángel; Vega, Didac; Llorca Piqué, Jordi (2013-02)
    Article
    Accés restringit per política de l'editorial
    A silicon micromonolith of 7 mm diameter and 0.2 mm length containing 1.5 million regular channels with a diameter of 3.3 μm was used for obtaining hydrogen through ethanol or bio-ethanol steam reforming (ESR) and oxidative ...
  • Bio-nanohybrid catalysts based on L-leucine immobilized in hydrotalcite and their activity in aldol reaction 

    Crivoi, Dana-Georgiana; Miranda, Ronald Alexander; Finocchio, Elisabetta; Llorca Piqué, Jordi; Ramis, Gianguido; Sueiras, Jesus Eduardo; Segarra González, Anna Maria; Medina Mena, Francisco (2016-06-05)
    Article
    Accés restringit per política de l'editorial
    Nanohybrid materials based on L-leucine (L-Leu) and hydrotalcites (HT) were prepared by the ion exchange and reconstruction method, under mild synthesis conditions. The location, amount and the form of the immobilized L-Leu ...
  • Boosted CO2 reaction with methanol to yield dimethyl carbonate over Mg–Al hydrotalcite-silica lyogels 

    Stoian, D.C.; Taboada, E.; Llorca Piqué, Jordi; Molins, E.; Medina, F.; Segarra, A.M. (2013-05-13)
    Article
    Accés restringit per política de l'editorial
    Nonimmobilized and immobilized Mg–Al hydrotalcite-like materials on silica lyogels were prepared and activated by calcination to be tested as catalysts in the direct carboxylation reaction of methanol. The HTs supportedon ...
  • Catalytic activity and characterization of Fe-Zn-Mg-Al hydrotalcites in biohydrogen production 

    Wimonsong, Pornthip; Llorca Piqué, Jordi; Nitisoravut, Rachnarin (2013-08-21)
    Article
    Accés restringit per política de l'editorial
    Four different M2þeMgeAl hydrotalcite (HT) materials were investigated for their effect on biohydrogen enhancement, where M2þ is Fe and/or Zn. HTs were synthesized by the coprecipitation method and characterized by ...
  • Catalytic membrane reactors based on macroporous silicon for hydrogen production 

    Vega Bru, Didac; Hernández Díaz, David; López, E.; Jiménez, Nuria; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; Llorca Piqué, Jordi (2010)
    Text en actes de congrés
    Accés obert
    The typology of using hydrogen as an energy carrier and its implementation in portable fuel cells has motivated a considerable research interest in the development of new efficient hydrogen production technologies. Hydrogen ...
  • Catalytic reforming of dimethyl ether in microchannels 

    Ledesma Rodriguez, Cristian; López, Eduardo; Trifonov, T.; Rodríguez Martínez, Ángel; Llorca Piqué, Jordi (2018-03-09)
    Article
    Accés restringit per política de l'editorial
    The steam reforming and oxidative steam reforming of dimethyl ether (DME) were tested at 573–773¿K over a CuZn/ZrO2 catalyst in microreactors with three different types of channels: ceramic square channels with side lengths ...
  • Catalytic steam reforming of olive mill wastewater for hydrogen production 

    Casanovas, A.; Galvis, A; Llorca Piqué, Jordi (2015-06-29)
    Article
    Accés obert
    Catalytic honeycombs functionalized with lanthanum-stabilized ceria as catalytic support and impregnated with different metals (Rh, Ru, Pt, Pd and Ni) were prepared and tested for hydrogen production through the steam ...
  • Ceria catalysts at nanoscale: how do crystal shapes shape catalysis? 

    Trovarelli, Alessandro; Llorca Piqué, Jordi (2017-07-01)
    Article
    Accés restringit per política de l'editorial
    Engineering the shape and size of catalyst particles and the interface between different components of heterogeneous catalysts at the nanometer level can radically alter their performances. This is particularly true with ...
  • Ceria-zirconia particles wrapped in a 2D carbon envelope: improved low-temperature oxygen transfer and oxidation activity 

    Aneggi, Eleonora; Rico Perez, Veronica; de Leitenburg, Carla; Maschio, Stefano; Soler Turu, Lluís; Llorca Piqué, Jordi; Trovarelli, Alessandro (2015-10-08)
    Article
    Accés obert
    Engineering the interface between different compo-nents of heterogeneous catalysts at nanometer level canradically alter their performances.This is particularly true forceria-based catalysts where the interactions are ...