Exploració per autor "Llorca Piqué, Jordi"Més informacióMés informació

Ara es mostren els items 182-201 de 348

    • Macroporous silicon : a next generation catalytic monolith for ethanol steam reforming 

      Vega Bru, Didac; Hernández Díaz, David; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; López, E.; Jiménez, Nuria; Llorca Piqué, Jordi (Publicacions de la Universitat de València (PUV), 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Macroporous silicon membranes, consisting of straight parallel pores with a diameter of 3.3μm and depth/width ratio >60, are used as microreactors for high efficiency hydrogen generation via steam reforming of ethanol. The ...

    • Macroporous silicon coated with M/TiO2 (M=Au,Pt) as a highly efficient photoreactor for hydrogen production 

      Serafin, Jaroslaw; Soler Turu, Lluís; Vega Bru, Didac; Rodríguez Martínez, Ángel; Llorca Piqué, Jordi (2020-03-07)
      Article
      Accés obert
      Macroporous silicon disks containing ordered channels of 2 µm side and 0.2 mm length (9 × 106 channels cm-2) have been functionalized with a thin layer of Au/TiO2 and Pt/TiO2 photocatalysts and tested in the photoproduction ...

    • Macroporous silicon filters, a versatile platform for NDIR spectroscopic gas sensing in the MIR 

      Cardador Maza, David; Segura García, Daniel; Deriziotis, Ioannis; Rodríguez Martínez, Ángel; Llorca Piqué, Jordi (2019-07-23)
      Article
      Accés obert
      This paper describes the spectroscopic detection of gases using macroporous silicon photonic crystals as narrow filters. The study begins by demonstrating the feasibility of photoelectrochemical etching to fabricate narrow ...

    • Macroporous silicon membranes for hydrogen production from multiple fuel sources 

      Vega Bru, Didac; Jiménez Divins, Nuria; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Llorca Piqué, Jordi (Universitat de València, 2023)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      A macroporous silicon (MPS) membrane of 210 ¿m thickness was functionalized and evaluated for hydrogen production by steam reforming of various fuels. The MPS membrane was a regular array of pores about 3.3 ¿m diameter and ...

    • Macroporous silicon microreactor for the preferential oxidation of CO 

      Jiménez Divins, Nuria; López, E.; Llorca Piqué, Jordi; Vega, Didac; Rodríguez, A.; Gonzàlez de Rivera, Ferran; Angurell Purroy, Inmaculada; Seco García, Miquel Angel; Rossell Alfonso, Josep Oriol (IEEEXPLORE, 2013)
      Article
      Accés restringit per política de l'editorial
      A macroporous silicon micromonolith containing ca. 40,000 regular channels of 3.3 ¿m in diameter per square millimeter has been successfully functionalized with an Au/TiO2 catalyst for CO preferential oxidation (CO-PrOx) ...

    • Macroporous silicon structures in 700 nm and 500 nm 

      Rodríguez Martínez, Ángel; Vega Bru, Didac; Llorca Piqué, Jordi (Editora ARTEMIS, 2023)
      Capítol de llibre
      Accés obert
      Macroporous Silicon is a structured material with which innovative optical and electrical characteristics can be obtained. It consists in a crystalline silicon slab where tubular perforations are made. Several fabrication ...

    • Magnetite-supported palladium single-atoms do not catalyse the hydrogenation of alkenes but small clusters do 

      Rosell, Marta D.; Caparrós, Francisco J.; Angurell Purroy, Inmaculada; Müller Jevenois, Guillermo; Llorca Piqué, Jordi; Seco García, Miquel Angel; Rosell, Oriol (2016-01-01)
      Article
      Accés obert
      The activity of supported noble metal catalysts strongly depends on the particle size. The ultimate small-size limit is the single-atom catalyst (SAC), which maximizes the catalytic efficiency in the majority of the examples. ...

    • Mechanochemically activated Au/CeO2 for enhanced CO oxidation and COPrOx reaction 

      Ge, Shasha; Chen, Yufen; Guo, Yun; Llorca Piqué, Jordi; Soler Turu, Lluís (Elsevier, 2023-08-01)
      Article
      Accés obert
      COPrOx reaction is one of the particularly appealing and cost-effective solutions for the selective oxidation of CO in hydrogen-rich gas streams to meet the stringent requirement of the current electrocatalysts employed ...

    • Mechanochemistry: a green and fast method to prepare a new generation of metal supported catalysts 

      Danielis, Maila; Colussi, Sara; Jiménez Divins, Nuria; Soler Turu, Lluís; Trovarelli, Alessandro; Llorca Piqué, Jordi (2023)
      Article
      Accés obert
      In this review, we report on recent advances in the use of mechanochemistry to synthesize new catalytic materials. We report recent results obtained by our groups where a rational design of the milling parameters led to ...

    • Methane oxidation activity and nanoscale characterization of Pd/CeO2 catalysts prepared by dry milling Pd acetate and ceria 

      Danielis, Maila; Orozco, Ivan; Jiménez Divins, Nuria; Llorca Piqué, Jordi; Rodriguez, Jose A.; Senanayake, Sanjaya D.; Colussi, Sara; Trovarelli, Alessandro (2021-03-01)
      Article
      Accés obert
      The milling of Palladium acetate and CeO2 under dry conditions results in robust, environmentally friendly catalysts with excellent methane oxidation activity. These catalysts show superior performance compared to those ...

    • 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)
      Article
      Accés obert
      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 ...

    • Methanol steam reforming behavior of sol-gel synthesized nanodimensional CuxFe1-xAl2O4 hercynites 

      Maiti, Sayantani; Das, Dipak; Pal, Kamalesh; Llorca Piqué, Jordi; Soler Turu, Lluís; Colussi, Sara; Trovarelli, Alessandro; Priolkar, Kaustubh R.; Sarode, P.R.; Asakura, K.; Motin Seikh, Md.; Gayen, Arup (2019-01-25)
      Article
      Accés obert
      This work reports the outstanding catalytic activity behavior of sol-gel synthesized nanostructured CuxFe1-xAl2O4 (0.3¿=¿x¿=¿0.8; named as CuFeAln, where n¿=¿30, 40, 50, 60, 70 and 80) hercynites towards methanol steam ...

    • Methanol steam reforming over PdZn/ZnAl2O4/Al2O3 in a catalytic membrane reactor: An experimental and modelling study 

      Cifuentes López, Alejandro; Soler Turu, Lluís; Torres Cámara, Ricardo; Llorca Piqué, Jordi (2022-03-11)
      Article
      Accés obert
      A catalytic membrane reactor equipped with Pd–Ag metallic membranes and loaded with PdZn/ZnAl2O4/Al2O3 catalytic pellets was tested for the methanol steam reforming reaction (S/C = 1) aimed at producing a pure hydrogen ...

    • Microwave-assisted furfural production using hectorites and fluorohectorites as catalysts 

      Sánchez, Vladimir; Dafinov, Antonio; Salagre, Pilar; Llorca Piqué, Jordi; Cesteros, Yolanda (2019-09-01)
      Article
      Accés obert
      It has previously been reported that the use of microwave heating, together with the presence of co-solvents, improves the efficiency of furfural production from biomass. Solid acid catalysts can be a good alternative to ...

    • Microwave-assisted synthesis of sulfonic acid-functionalized microporous materials for the catalytic etherification of glycerol with isobutene 

      González, Maria Dolores; Salagre, Pilar; Taboada Cabellos, Elena; Llorca Piqué, Jordi; Cesteros, Yolanda (2013)
      Article
      Accés restringit per política de l'editorial
      Commercial Beta, ZSM-5 and mordenite zeolites and commercial montmorillonite K-10 were successfully sulfonated by a one-step simple method using microwaves. Different amounts of the sulfonating agent were required to ...

    • Mixed iron-erbium vanadate NH3-SCR catalysts 

      Casanova, Marzia; Llorca Piqué, Jordi; Schermanz, Karl; Trovarelli, Alessandro; Sagar, Amod (2015-03-01)
      Article
      Accés restringit per política de l'editorial
      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, ...

    • Mn3O4@CoMn2O4-CoxOy nanoparticles : partial cation exchange synthesis and electrocatalytic properties toward the oxygen reduction and evolution reactions 

      Luo, Zhishan; Irtem, Erdem; Ibañez, María; Nafria Soler, Raquel; Martí Sanchez, Sara; Genç, Aziz; de la Mata, María; Liu, Yu; Cadavid, Doris; Llorca Piqué, Jordi; Arbiol, Jordi; Andreu, Teresa; Morante Lleonart, Joan Ramon; Cabot Codina, Andreu (2016-07-13)
      Article
      Accés obert
      Mn3O4@CoMn2O4 nanoparticles (NPs) were produced at low temperature and ambient atmosphere using a one -pot two-step synthesis protocol involving the cation exchange of Mn by Co in preformed Mn3O4 NPs. Selecting the proper ...

    • Model predictive control for ethanol steam reformers with membrane separation 

      Serra, Maria; Ocampo-Martínez, Carlos; Li, Mingming; Llorca Piqué, Jordi (2017-01-26)
      Article
      Accés obert
      This paper focuses on the dynamic modelling and the predictive control of an ethanol steam reformer (ESR) with Pdsingle bondAg membrane separation stage for the generation of pure hydrogen. Hydrogen purity necessary to ...

    • Modelling and simulation of catalytic ammonia decomposition over Ni-Ru deposited on 3D-printed CeO2 

      Lucentini, Ilaria; García Colli, Germán; Luzi, Carlos Daniel; Serrano Carreño, M. Isabel; Soler Turu, Lluís; Jiménez Divins, Nuria; Martínez, Osvaldo Miguel; Llorca Piqué, Jordi (2022-01)
      Article
      Accés obert
      3D-printed ceria structures have been prepared by robocasting, without using any additive, and impregnated with different amounts of Ni and Ru, characterized and tested for the catalytic decomposition of ammonia in a fixed ...

    • Modelling of the ethanol steam reforming Pd/CeO2 catalytic wall reactor 

      Cifuentes López, Alejandro; Torres Cámara, Ricardo; Llorca Piqué, Jordi (2019-11-27)
      Article
      Accés obert
      Existing literature data have been used to model the steam reforming of ethanol on catalytic honeycombs coated with Rh-Pd/CeO2, which have shown an excellent performance and robustness for the production of hydrogen under ...