Ara es mostren els items 1-20 de 114

    • 3D printed microstructured Au/TiO2 catalyst for hydrogen photoproduction 

      Elkoro Ugarteburu, Ander; Soler Turu, Lluís; Llorca Piqué, Jordi; Casanova Hormaechea, Ignasi (Elsevier, 2019-06-25)
      Article
      Accés obert
      We successfully 3D printed Au/TiO2 monoliths for photogenerating hydrogen from water/ethanol gaseous mixtures under dynamic conditions. Monolith designs were printed by additive superposition of microfilaments of titania-based ...
    • 3D-Printed Co/YSZ catalyst for H2 production 

      Kiefer, Guillaume (Universitat Politècnica de Catalunya, 2022-02-14)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      3D printing is a constantly improving manufacturing technique. Due to its improvement, more and more possibilities are offered to us. Starting with impression of polymers, the multitude of possibilities is now vast, and ...
    • A direct Z-scheme for the photocatalytic hydrogen production from a water ethanol mixture on CoTiO3/TiO2 heterostructures 

      Xing, Congcong; Liu, Yongpeng; Zhang, Yu; Wang, Xiang; Guardia, Pablo; Yao, Liang; Han, Xu; Zhang, Ting; Arbiol Cobos, Jordi; Soler Turu, Lluís; Chen, Yufen; Sivula, Kevin; Guijarro, Néstor; Cabot, Andreu; Llorca Piqué, Jordi (2021-01-01)
      Article
      Accés obert
      Photocatalytic H2 evolution from ethanol dehydrogenation is a convenient strategy to store solar energy in a highly valuable fuel with potential zero net CO2 balance. Herein, we report on the synthesis of CoTiO3/TiO2 ...
    • A million-microchannel multifuel steam reformer for hydrogen production 

      Jiménez Divins, Nuria; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Llorca Piqué, Jordi (2020-05-05)
      Article
      Accés obert
      A functionalized silicon micromonolith of 7 mm in diameter and 210 μm-thick was evaluated for the production of hydrogen from the steam reforming (SR) of various fuels, containing different functional groups, such as ...
    • Adaptació d'una gasolinera a una hidrogenera 

      Aragonès Carrasquer, Martí (Universitat Politècnica de Catalunya, 2023-10-31)
      Treball Final de Grau
      Accés obert
      Aquest projecte es basa en l’adaptació d’una estació de servei, en la que es subministren derivats del petroli, cap a una estació de servei on també es subministri hidrogen a pressió en estat gasós. Aquesta adaptació pretén ...
    • 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 ...
    • Aluminum and aluminum alloys as sources of hydrogen for fuel cell applications 

      Soler Turu, Lluís; Macanás de Benito, Jorge; Muñoz Tapia, Maria; Casado Giménez, Juan (2007-06-10)
      Article
      Accés restringit per política de l'editorial
      Production of hydrogen using aluminum and aluminum alloys with aqueous alkaline solutions is studied. This process is based on aluminum corrosion, consuming only water and aluminum which are cheaper raw materials than other ...
    • Analysis of valorization process of aluminum breakage scraps to obtain green hydrogen 

      Salueña Berna, Javier; Marin Genesca, Marc; Dagá Monmany, José María (Multidisciplinary Digital Publishing Institute (MDPI), 2021-04-06)
      Article
      Accés obert
      In this article, it is proposed to use aluminum breakage scraps to obtain green hydrogen through the aluminum–water reaction with caustic soda as a catalyst with experimental research. From this exothermic reaction, both ...
    • Annealing effects on the conduction mechanisms of p+-amorphous- Si0.8C0.2:H/n-crystalline-Si diodes 

      Marsal Garví, Lluís F.; Martín García, Isidro; Pallarés Marzal, Josep; Orpella García, Alberto; Alcubilla González, Ramón (American Institute of Physics, 2003-08-15)
      Article
      Accés restringit per política de l'editorial
      P1-type hydrogenated amorphous silicon–carbon (a-Si12xCx :H) on n-type crystalline silicon (c-Si) heterojunction diodes were fabricated and characterized electrically. The effects of thermal annealing on the electrical ...
    • Aplicación de la energía eólica para la producción de hidrógeno mediante electrólisis 

      Soriano Sastre, Ivan (Universitat Politècnica de Catalunya, 2010-06-17)
      Projecte/Treball Final de Carrera
      Accés obert
      L'objecte del present document és estudiar un sistema de producció d'hidrogen fonamentant/basant l'obtenció d'aquest a l'energía elèctrica produïda en un parc eòlic de la província de Barcelona i el posterior procés de ...
    • Aprovechamiento de residuos de aluminio industrial para la obtención controlada de hidrógeno mediante la reacción aluminio-agua 

      Mujal-Rosas, Ramon Maria; Salueña Berna, Javier; Martínez López, Joan; Dagá Monmany, José María (2016-12-14)
      Article
      Accés obert
      La aparición de vehículos que funcionan con pilas de combustible tipo PEM (membrana de intercambio de protones) plantea la necesidad de proporcionar hidrógeno de alta pureza de forma dosificada y a baja presión. ...
    • Assessment of integration of methane-reduced ceria chemical looping CO2/H2O splitting cycle to an oxy-fired power plant 

      Uddin, Azhar; Bose, Archishman; Boaro, Marta; Llorca Piqué, Jordi; Santarelli, Massimo (2020-02-28)
      Article
      Accés obert
      In this paper, we investigated the effect of reaction kinetics and moving bed reactors for chemical looping (CO2/H2O) splitting unit (CL) that produces syngas and fed back to the power plant to gain the efficiency loss due ...
    • Bimetallic NiFe nanoparticles supported on CeO2 as catalysts for methane steam reforming 

      Braga, Andrea; Armengol Profitós, Marina; Pascua Solé, Laia; Vendrell Villafruela, Xavier; Soler Turu, Lluís; Serrano Carreño, M. Isabel; Villar García, Ignacio J.; Pérez Dieste, Virginia; Jiménez Divins, Nuria; Llorca Piqué, Jordi (American Chemical Society, 2023-05-12)
      Article
      Accés obert
      Ni-Fe nanocatalysts supported on CeO2 have been prepared for the catalysis of methane steam reforming (MSR) aiming for coke-resistant noble metal-free catalysts. The catalysts have been synthesized by traditional incipient ...
    • 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 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 ...
    • Characterization of a mesophilic anaerobic inoculum by means of methanogenic activity tests 

      Garcia Ruiz, Javier (Universitat Politècnica de Catalunya, 2014-07-09)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   IRTA
      The anaerobic digestion is a well-known technology to treat wastes with a high potential of methane recovery (i.e. manures, slaughterhouse waste, animal by-products waste and other types of organic wastes) even presenting ...
    • Chelating agent effects in the synthesis of supported Ni nanoparticles as catalysts for hydrogen production 

      Villagran Olivares, Alejandra C.; Barroso, Mariana Noelia; López, Carlos Alberto; Llorca Piqué, Jordi; Abello, María Cristina (Elsevier, 2021-07-25)
      Article
      Accés obert
      A series of Ni supported over MgAl2O4–CeO2 catalysts have been prepared by the wet impregnation method as catalysts for steam ethanol reforming. The synthesis was performed using nitrilotriacetic acid (NTA) or citric acid ...
    • Cobalt hydrotalcites as catalysts for bioethanol steam reforming. The promoting effect of potassium on catalyst activity and long-term stability 

      Espinal, Raul; Taboada, E.; Molins, E.; Chimentao, Ricardo J; Medina, Francisco; Llorca Piqué, Jordi (2012-10-30)
      Article
      Accés restringit per política de l'editorial
      Cobalt hydrotalcite-derived catalysts, doped with potassium, are active materials for the ethanol steam reforming reaction. Potassium addition reduces the acid sites number and strength. It acts as a promoter of the ethanol ...
    • Cogeneració amb piles de combustible: aplicació a edificis de la UPC 

      Martínez, Cristina; Sánchez, Carlos; Sancho, Javier; Simon, Javier; Pretel Sánchez, Carme; Llorca Piqué, Jordi (Centre per a la Sostenibilitat, 2009-07-09)
      Text en actes de congrés
      Accés obert
      Les piles de combustible són dispositius electroquímics que transformen directament l’energia d’un combustible químic en energia elèctrica i calor. Entre els seus avantatges destaquen una eficiència energètica molt elevada, ...
    • Colloidal Ni2-: XCoxP nanocrystals for the hydrogen evolution reaction 

      Liu, Junfeng; Wang, Zhenxing; David, Jeremy; Llorca Piqué, Jordi (Royal Society of Chemistry (RSC), 2018-05-11)
      Article
      Accés obert
      A cost-effective and scalable approach was developed to produce monodisperse Ni2-xCoxP nanocrystals (NCs) with composition tuned over the entire range (0 = x = 2). Ni2-xCoxP NCs were synthesized using low-cost, stable and ...