Graphic summary
  • Show / hide key
  • Information


Scientific and technological production
  •  

1 to 50 of 367 results
  • Hydrogen production from bioethanol using cobalt hydrotalcites.  Open access

     Espinal Bustos, Raúl Uziel
    Universitat Politècnica de Catalunya
    Theses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    El hidrógeno se perfila como un vector energético que puede ayudarnos a gestionar la energía de una manera más eficiente. El hidrógeno se puede almacenar y usar para producir electricidad en las pilas de combustible, en las que se combina con el oxígeno del aire y genera únicamente agua como subproducto. De las distintas maneras que existen para producir hidrógeno, la reacción catalítica entre el etanol y el agua (reformado) constituye una de las mejores opciones, ya que el etanol se produce fácilmente a partir de la biomasa (bioetanol) y es un substrato líquido y fácilmente manipulable. En esta tesis doctoral se ha estudiado el comportamiento de una familia de catalizadores de cobalto para llevar a cabo la producción de hidrógeno a partir de etanol y agua; concretamente, catalizadores basados en hidrotalcitas de cobalto. Existen otros catalizadores para llevar a cabo este mismo proceso, pero muchos de ellos tienen un coste elevado porque contienen metales nobles y otros se desactivan con facilidad por deposición de carbón en su superficie (los basados en níquel y cobalto). En esta tesis se demuestra que mediante un método preciso de preparación a partir de hidrotalcitas de cobalto se consiguen catalizadores de bajo coste y muy estables bajo condiciones reales de operación.El capítulo 1 es una introducción a los aspectos más destacables de la tesis doctoral, en el que se plantean los objetivos que se quieren abordar y se incluyen el estado del arte y los fundamentos en los que se basa el trabajo experimental realizado. Además de la naturaleza de los catalizadores y de las reacciones que se van a estudiar, en la introducción también se explica qué son y por qué se utilizan en esta tesis monolitos de cordierita como soportes físicos de los catalizadores y reactores catalíticos de membrana. Y es que esta tesis doctoral persigue, por un lado, la adquisición de nuevo conocimiento científico y, por otro lado, la aplicación de este conocimiento en el desarrollo de dispositivos útiles en aplicaciones reales.En los capítulos siguientes, la tesis doctoral constituye un compendio de artículos publicados en revistas internacionales de prestigio (3 artículos publicados y 1 artículo en proceso de revisión).En el capítulo 2 se describe la preparación de una familia de hidrotalcitas de cobalto con distinto contenido de cobalto, magnesio y aluminio y su comportamiento catalítico en la reacción de reformado de etanol con vapor para la producción de hidrógeno. A partir de una caracterización pormenorizada mediante distintas técnicas instrumentales, entre las que se incluyen la microscopía electrónica de barrido, microscopía electrónica de transmisión, difracción de rayos X, medidas de magnetismo a temperatura variable, espectroscopia infrarroja, análisis termogravimétricos, y experimentos in-situ con espectroscopía fotoelectrónica de rayos X, se identifican las especies químicas presentes y su estructura en los catalizadores antes, durante, y después de la reacción, poniéndose de manifiesto que la mejor formulación (la que ofrece un rendimiento a hidrógeno más elevado y sobre la que apenas se depositan residuos carbonosos) corresponde a una hidrotalcita con una relación Co:Mg:Al de 1:2:1. Asimismo se concluye que el catalizador preparado a partir de esta hidrotalcita se transforma a una mezcla de espinela de cobalto interaccionando fuertemente con MgO a escala nanométrica bajo las condiciones de reacción. Sin embargo, al realizar la reacción exclusivamente con la espinela de cobalto (preparada por separado a tal efecto) se obtiene una producción de hidrógeno menor, lo que demuestra que la hidrotalcita de cobalto usada como precursor del catalizador ejerce un control decisivo en la estructura del mismo. En el capítulo 3 se estudia la influencia del dopaje de la hidrotalcita Co:Mg:Al=1:2:1 con Pt y Rh. . Para ello se han preparado dos familias de catalizadores con distinto contenido de Pt y Rh.

    Tesi per compendi de publicacions

    Hydrogen constitutes a promising alternative to manage our energy supply more efficiently. Hydrogen can be stored and used in fuel cells to produce electricity, where it combines with the oxygen present in the air and generates solely water as by-product. Of the different methods available to produce hydrogen, the catalytic reaction of ethanol and water (reforming) is one of the most advantageous alternatives, since ethanol can be produced easily from biomass (bioethanol), is liquid and simple to manipulate. This doctoral thesis studies the behavior of a family of cobalt catalysts to produce hydrogen from ethanol and water; to be more precise, catalysts based on cobalt hydrotalcites. The same process could be triggered by other types of catalyst, but many of them are far more expensive due to the noble metals they contain, and others - those based on nickel and cobalt - desactivate after a short amount of time because their surface accumulate carbon. This thesis demonstrates that with the help of a precise method of preparation, one can create inexpensive catalysts from cobalt hydrotalcites, which remain quite stable under realistic operating conditions. Chapter 1 introduces the reader to the key aspects of this doctoral thesis. It explains the objectives pursued and gives an overview of the state of art and the groundwork on which the experimental work is based. Besides explaining the general characteristics of the catalysts and the reactions that will be studied, chapter 1 also informs about cordierite monoliths: what exactly are they and why are they used in this work to physically stabilize the catalysts and catalytic membrane reactors. In this way, the aim of this doctoral thesis is to acquire new scientific knowledge on the one hand and on the other, to apply this knowledge in the development of devices that can be applied in practice. The four chapters following thereafter form a compound of papers that have been published in notable international journals (three of them) and one article in process of revision. Chapter 2 describes the preparation of a family of cobalt hydrotalcites with different ratios of cobalt, magnesia and aluminum, and how these cobalt hydrotalcites behave in the ethanol steam reforming reaction to produce hydrogen. Starting from a detailed characterization using different techniques like TEM, XRD, IR, TGA, In situ XPS, magnetism, etc., the different chemical elements present are identified, and their structure in the catalysts before, during, and after reaction is analyzed. It becomes evident that the best formula (with the greatest yield of hydrogen and the least amount of coke residual) is a hydrotalcite with a relation of Co:Mg:Al=1:2:1. It is concluded that during the reaction, the hydrotalcite-based catalyst transforms itself to a mix of cobalt spinel, strongly interacting with MgO on a nanometric scale. Nevertheless, if the reaction is repeated using only cobalt spinel (synthesized specifically for this purpose), the outcome is a smaller amount of hydrogen. This shows that cobalt hydrotalcite used as a catalyst precursor plays a crucial part in the final structure of the catalyst. Hydrotalcite Co:Mg:Al=1:2:1 doped with Pt and Rh is studied in chapter 3. For this, two families of catalysts with different ratios of Pt and Rh were prepared. They were analyzed under the same conditions as explained in chapter 2 and were tested in the reaction. The objective of doping the cobalt hydrotalcite with noble metals was to facilitate the reaction of cobalt, given the fact that metallic cobalt is the active element in ethanol steam reforming. Besides this key function of metallic cobalt, chapter 2 also reveals, however, that metallic cobalt speeds up the catalyst deactivation by causing severe coke accumulation. Hydrotalcite Co:Mg:Al=1:2:1 doped with Pt and Rh is studied in chapter 3. For this, two families of catalysts with different ratios of Pt and Rh were prepared.

  • Gold nanoclusters for efficient removal of organic pollutants at room temperature

     Santiago Redondo, Marta; Blázquez Gómez, Zaira; Galindo, Edurne; Alves, Leonor; Llorca Pique, Jordi; Mendoza Gomez, Ernesto
    Submarine Air Monitoring and Air Purification
    p. 1-6
    Presentation's date: 2013-10-15
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    Preserving air quality of an enclosed space such as a submarine is a major challenge yet to be addressed. Currently, CO-H2 burners are employed to maintain a breathable air environment inside the submarine through catalytic conversion of contaminants being present in the air thereof into CO2 + H2O. These burners use a mixture of manganese and copper oxides referred to as hopcalite. Unfortunately, this catalyst presents a reasonable oxidation activity only above 150ºC as it suffers from strong inhibition by the presence of moisture. Furthermore, at such high operating temperatures, partial oxidation of hydrocarbons over the hopcalite may generate toxic by-products such as HF and HCl. Herein, we present a novel catalyst based on gold nanoclusters capable of eliminating massive amounts of organic pollutants at room temperature even in the presence of moisture.

    Postprint (author’s final draft)

  • Hydrogen from bioethanol. Remewable yydrogen technologies. Chapter 7

     Llorca Pique, Jordi
    DOI: 1016/3978044456351400007
    Date of publication: 2013-05-01
    Book chapter

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Producción y acondicionamiento de hidrógeno para pilas de combustible portátiles con microreactores y fotocatalizadores

     Dominguez Escalante, Montserrat; Jimenez Divins, Nuria; Roig Costa, Maria; Casanovas Grau, Albert; Mendoza Gomez, Ernesto; Llorca Pique, Jordi
    Competitive project

     Share

  • Q-00032

     Casanovas Grau, Albert; Llorca Pique, Jordi
    Competitive project

     Share

  • Access to the full text
    Experimental analysis of a degraded open-cathode PEM fuel cell stack  Open access

     Strahl, Stephan; Gasamans Rodríguez, Noemí; Llorca Pique, Jordi; Husar, Attila Peter
    Iberian Symposium on Hydrogen Fuel Cells and Advanced Batteries
    p. 1-4
    Presentation's date: 2013
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    The well-known challenges to be overcome in PEM fuel cell research are their relatively low durability and high costs for the platinum catalysts. Thus, this work focuses on factors that impact durability and the links to the fuel cell performance. Therefore a degraded, open-cathode, 20-cell, PEM fuel cell stack, which was used in a laboratory test station for characterization experiments, was analyzed experimentally. Voltage transients during external perturbations, such as changing temperature, humidity and stoichiometries show that degradation affects individual cells quite differently throughout the lifetime of the stack. Electrochemical impedance spectroscopy (EIS) data presents non-reversible catalyst layer and membrane degradation of several cells. X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) are in progress in order to validate the results of the electrical analysis and elucidate catalyst and membrane degradation.

  • Premios de la Fundación Altran 2012

     Mendoza Gomez, Ernesto; Llorca Pique, Jordi
    Award or recognition

    View View Open in new window  Share

  • The study of catalysts by transmission electron microscopy techniques

     Llorca Pique, Jordi
    Date of publication: 2012-09-11
    Book chapter

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Incorporació de tècnic de gestió d'R+D+I a l'INTE

     Sanchez Diaz, Alexandre; Llorca Pique, Jordi
    Competitive project

     Share

  • Premi ICREA Acadèmia

     Masoller Alonso, Cristina; Garcia Ojalvo, Jorge; Llorca Pique, Jordi
    Award or recognition

     Share

  • Premi EcoEmprenedor XXI

     Llorca Pique, Jordi; Mendoza Gomez, Ernesto
    Award or recognition

    View View Open in new window  Share

  • Modelado, análisis y control dinámico de un reformador de etanol en tres etapas para aplicaciones en pilas de combustible  Open access

     García, Vanesa Mariel
    Institute of Industrial and Control Engineering (IOC), Universitat Politècnica de Catalunya
    Theses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    This thesis presents results related to the design, modeling and control of a low temperature ethanol reformer as a source of hydrogen designed to feed a fuel cell (PEMFC). As fuel, ethanol has been selected as one of the renewable energy sources currently under study due to its interest for scientific and economic fields. The reformer has been separated into three stages in order to guarantee the maximum production of H2 and the minimum production of CO. SnO2 and Co(Fe)Na+/ZnO catalytic monoliths have been used, where in the first stage ethanol is dehydrogenated over SnO2 and, in the second stage, the reforming of acetaldehyde over Co(Fe)Na+/ZnO takes place under the presence of hydrogen, generated in stage 1. Then we add a third stage with a Fe2O3-Cr2O3 commercial catalyst to complete the WGS reaction. In addition to ensure a reducing environment in the reforming step, this configuration also allows optimizing the conditions of each stage of the reaction. Constant pressure has been imposed as a condition of the reformer design, but the variation of temperatures in each stage has been considered. In this thesis dynamic models have been developed for the reformer of ethanol with vapour at low temperatures described previously, the stationary and dynamic response has been analysed and controllers have been designed to meet the requirements of the system. Up until now there have only been a few works that address the design and implementation of controllers for fuel reformers, and none of these have used ethanol fuel. Some are in the area of automatic control and have been applied to tubular reformers but consider other type of fuel, not ethanol, for its alimentation In this thesis the mathematical model used to represent the state of the monolithic reformer has been presented, considered and implemented. Through a study of the stationary state one can validate the different hypothesis of assumed design and through an analysis of the parametric sensitivity the operational conditions for the reform process are discussed. This way the mathematic model of the reactor can be used to explore other alternatives for the operation of the reformer putting an emphasis on the influence of temperature in the second stage as this is a variable. Afterwards a study is made of the control of the models based on the balance of mass and linearised energy. In order to realise the control study the mathematic tools RGA, MRI and CN have been used. Through this analysis the control structures have been selected which will be most suitable for design controllers which can guarantee the requirements for the fuel cell.

  • Catalizador para la producción de hidrógeno a partir de etanol y procedimiento y usos correspondientes

     Llorca Pique, Jordi; Jimenez Divins, Nuria; Cubilla Angulo, Juan Manuel
    Date of request: 2012-04-20
    Invention patent

     Share Reference managers Reference managers Open in new window

  • Dels asteroides als meteorits

     Llorca Pique, Jordi
    Date of publication: 2012-04-01
    Book chapter

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Obtención de hidrógeno ultra puro a partir de bioetanol en reactores de membrana

     Jimenez Divins, Nuria; Taboada Cabellos, Elena; Llorca Pique, Jordi
    Competitive project

     Share

  • Producción de hidrógeno a partir del reformado con vapor de dimetil éter utilizando monolitos catalíticos  Open access

     Ledesma Rodriguez, Cristian
    Department of Chemical Engineering, Universitat Politècnica de Catalunya
    Theses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    El modelo actual del consumo energético basado en la utilización de combustibles fósiles requiere un replanteamiento debido al agotamiento de éstos y a las emisiones de gases contaminantes que generan. La obtención de energía mediante la utilización de pilas de combustible se presenta como una alternativa prometedora dado su elevado rendimiento energético y que únicamente genera agua como subproducto. El tipo más sencillo de pila de combustible requiere de una fuente de oxígeno e hidrógeno. El primero puede extraerse del aire de forma sencilla, pero el hidrógeno debe generarse ya que no existe de forma aislada en la Tierra. Uno de los métodos con los que se obtiene una mayor cantidad de hidrógeno es mediante el reformado catalítico con vapor de un combustible derivado de la biomasa, el cual además es un método sostenible dado que no se generan nuevas emisiones a la atmósfera. En este trabajo se ha estudiado la producción de hidrógeno a través de la reacción catalítica y endotérmica del reformado con vapor del dimetil éter, producto que puede obtenerse a partir de la biomasa. Para ello se ha preparado y caracterizado mediante diferentes técnicas propias del estado sólido una serie de catalizadores soportados en estructuras monolíticas de cordierita que contienen diferentes óxidos inorgánicos como soporte y cobre, zinc, paladio o mezclas de éstos como fase activa. Se ha estudiado el comportamiento de los catalizadores monolíticos en la reacción de reformado con vapor del dimetil éter para evaluar su actividad, selectividad y estabilidad tanto en condiciones diluidas como en condiciones próximas a las de la industria. Asimismo se ha estudiado el mecanismo de la reacción mediante espectroscopía IR y la naturaleza de los centros activos de los catalizadores mediante espectroscopía fotoelectrónica de rayos X (XPS). El catalizador monolítico que ha mostrado un mejor comportamiento en términos de actividad, selectividad y estabilidad es el que contiene Cu y Zn como fase activa y óxido de zirconio. La presencia de especies reducidas de cobre favorece la formación de especies intermedias tipo formiato, que son las que evolucionan a dióxido de carbono. La presencia del zinc favorece la dispersión de las partículas de cobre, además de mejorar la selectividad hacia los productos de la reacción de reformado, hidrógeno y dióxido de carbono

    The current model of energy consumption based on the use of fossil fuels needs a change due to their exhaustion and their hazardous emissions to the atmosphere. Fuel cells are considered a promising alternative due to their high energy yield and only water is produced as a side product. The easiest type of fuel cell needs a source of oxygen and hydrogen. The first one can be extracted from air but the hydrogen must be produced since it does not exist as an isolated compound in Earth. One of the methods which a high amount of hydrogen is produced is by the steam reforming reaction of a biomass derived fuel, a sustainable method since no new emissions are generated. In this work, the production of hydrogen by the catalytic steam reforming of dimethyl ether (DME), a fuel that can be obtained from biomass, has been studied. Different catalysts supported on cordierite monolithic structures have been prepared and characterized by different techniques. These catalysts contain different inorganic oxides as a support and copper, zinc, palladium or mixtures of them as active phase. The performance of these catalysts in terms of activity, selectivity and stability in the DME steam reforming reaction has been studied under diluted conditions or using pure mixtures, simulating industrial conditions. Moreover, the reaction mechanism has been studied by IR spectroscopy and the nature of the active sites of the catalysts has been studied by X-ray photoelectron spectroscopy (XPS). The catalytic monolith that showed the best performance in terms of activity, selectivity and stability was the one that contains copper and zinc as active phase and zirconia oxide as a support. The presence of copper-reduced species favours the formation of formate intermediates, which evolves to carbon dioxide. The presence of zinc favours the dispersion of copper particles and improves the selectivity towards the reforming products, hydrogen and carbon dioxide.

  • Hydrogen from bioethanol: Catalytic honeycombs loaded with Co-Fe/ZnO for small-scale energy applications

     Ledesma Rodriguez, Cristian; Roig Costa, Maria; Llorca Pique, Jordi
    MRS Spring Meeting: Symposium F: Renewable Fuels and Nanotechnology
    p. 1-5
    Presentation's date: 2011-11-01
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • PROCEDIMIENTO PARA LA OBTENCIÓN DE UN SUSTRATO CON NANOCLUSTERS DE Au FIJADOS EN SU SUPERFICIE, Y SUBSTRATO Y CATALIZADOR OBTENIDOS MEDIANTE DICHO PROCEDIMIENTO

     Mendoza Gomez, Ernesto; Llorca Pique, Jordi
    Date of request: 2011-10-17
    Invention patent

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    Procedimiento para la obtención de un sustrato con nanoclusters de Au fijados en su superficie, y substrato y catalizador obtenidos mediante dicho procedimiento.

    Procedimiento para la obtención de un sustrato con nanoclusters 10 de Au (oro) fijados en su superficie, y substrato y catalizador obtenidos mediante dicho procedimiento. El procedimiento consiste en preparar una solución que contiene en forma dispersa nanoclusters de Au y, también en forma dispersa, un sustrato cuya superficie está funcionalizada con un polielectrolito que le confiere una carga eléctrica neta, y en someter dicha solución a una agitación intensa para provocar la fijación de nanoclusters de Au en la superficie del sustrato. Se obtiene como resultado un sustrato en cuya superficie se encuentran fijados nanoclusters de Au de forma dispersa sin presentar significativamente aglomerados. La invención también se refiere a un catalizador que comprende dicho sustrato con nanoclusters 20 de Au fijados en su superficie. Este catalizador es particularmente apto para su uso en reacciones de oxidación.

  • Transesterification of vegetable oil with solid acid catalyst in supercritical methanol and carbon dioxide as cosolvent

     Santana Scotelari de Souza, Aline; Ledesma Rodriguez, Cristian; Llorca Pique, Jordi; Larrayoz Iriarte, Maria Angeles
    International Symposium on Reactivity on Solids
    p. 89
    Presentation's date: 2011-06-27
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Ethanol photoreaction to Hydrogen over Au/TiO(2) catalysts: Effect of Au particle size and TiO(2) bulk structure

     Nadeem, M. A; Waterhouse, G.I.N; Llorca Pique, Jordi; Muir, Joah M. R.; Idriss, Hicham
    Preprints of symposia- Division of Fuel Chemistry American Chemical Society
    Presentation's date: 2011-03-27
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Continuous production of biodiesel from synthetic oil with supercritical methanol and CO2 using solid acid catalysts

     Baéz, B.; Santana Scotelari de Souza, Aline; Ledesma Rodriguez, Cristian; Llorca Pique, Jordi
    European Congress of Chemical Engineering
    p. P20:03-
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • A million-channel fuel processor on a fingertip

     López, E.; Irigoyen, A.; Rodriguez Martinez, Angel; Jiménez, N.; Todorov Trifonov, Trifon; Llorca Pique, Jordi
    International Conference on Microreactor Technology
    p. 3473-3479
    DOI: 10.1016/j.ijhydene.2010.01.146
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • El hidrógeno y nuestro futuro energético

     Llorca Pique, Jordi
    Date of publication: 2010-07-31
    Book

    View View Open in new window  Share Reference managers Reference managers Open in new window

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

     Vega, Didac; Todorov Trifonov, Trifon; Hernández García, David; Rodriguez Martinez, Angel; Alcubilla Gonzalez, Ramon; Jiménez, Nuria; Llorca Pique, Jordi; López, E.
    International conference on Porous Semiconductors Science and Technology
    p. 383-384
    Presentation's date: 2010-03
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    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 inner walls of the pores were coated with Co3O3*ZnO catalyst film. The as-prepared reactors were fed with water-ethanol gas mixture and the effect of the reactor temperature and inlet flow rate on the H2 generation was studied. We observed a superior H2 generation efficiency in comparison with conventional microreactors.

  • Microreactors for the generation of hydrogen from ethanol

     Llorca Pique, Jordi
    Date of publication: 2010-03-01
    Book chapter

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Producció d'hidrogen a partir de la reformació d'etanol amb reactors de parets catalítiques

     Casanovas Grau, Albert
    Department of Physics and Nuclear Engineering, Universitat Politècnica de Catalunya
    Theses

     Share Reference managers Reference managers Open in new window

  • REACTORES ESTRUCTURADOS Y MOCROREACTORES RECUBIERTOS CON AEROGLES E HIDROTALCITAS PARA LA GENERACIÓN DE HIDRÓGENO

     Casanova Hormaechea, Ignasi; Roig Costa, Maria; Jimenez Divins, Nuria; Taboada Cabellos, Elena; Llorca Pique, Jordi
    Competitive project

     Share

  • AJUT ICREA ACADEMIA 2010

     Llorca Pique, Jordi
    Competitive project

     Share

  • Linear control design of an ethanol steam reforming process for PEM fuel cell applications

     Garcia, Vanesa Mariel; Serra Prat, Maria; Llorca Pique, Jordi; Riera Colomer, Jordi
    Fuel Cells Science & Technology: Scientific Advances in Fuel Cell Systems
    p. 07-08
    Presentation's date: 2010
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • CO removal at the nanoscale: A 1-cent gold prox reactor

     Jiménez, NURIA; López, E; Todorov Trifonov, Trifon; Rodriguez Martinez, Angel; González de Rivera, G.; Rodríguez, L.I.; Rodríguez, M; Seco, M; Rosell, O; Llorca Pique, Jordi
    International Conference on Chemical Reactors
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Estudio de controlabilidad de un proceso de reformado de etanol con vapor para la producción de hidrógeno

     Garcia, Vanesa Mariel; Serra Prat, Maria; Llorca Pique, Jordi
    Congreso Nacional de Pilas de Combustible
    p. 329-332
    Presentation's date: 2010
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    En este trabajo hemos modelado un sistema de reformado de etanol con vapor y purificación de monóxido de carbono (CO). Dicho sistema está destinado a alimentar una pila de combustible tipo PEM. A partir del modelo hemos realizado un estudio de sensibilidad y controlabilidad enfatizando la influencia de la temperatura en las variables de salida de interés. Los resultados del estudio de controlabilidad se utilizan para la selección de las estructuras de control más convenientes.

  • A million channel reformer on a fingertip

     López, Eduardo; Irigoyen, Aitor; Todorov Trifonov, Trifon; Rodriguez Martinez, Angel; Llorca Pique, Jordi
    Europacat
    p. 1-4
    DOI: 10.1016/j.ijhydene.2010.01.146
    Presentation's date: 2009-08
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Producció d'hidrogen a partir de biocombustibles amb catalitzadors monolítics funcionalitzats

     Llorca Pique, Jordi
    V Trobada de Joves Investigadors dels Països Catalans, Societat Catalana de Química, O6.1.4.
    Presentation's date: 2009-01-28
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Silicio macroporoso con recubrimiento microporoso para microreactores catalíticos y filtros

     Rodriguez, Andres; Todorov Trifonov, Trifon; Alcubilla Gonzalez, Ramon; Llorca Pique, Jordi; Casanovas Villanueva, August; Urbiztondo Castro, Castro, Ángel; Pina Iritia, M.P.
    Date of request: 2008-03-25
    Invention patent

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    Silicio macroporoso con recubrimiento para microreactores catalíticos y filtros.

    La presente invención consiste en presentar un "Silicio macroporoso como estructura de microtubos y microtuneles cuyas paredes se funcionalizarán recubriéndolas con las sustancias adecuadas para formar microagujas y micromonolitos en los que se produzcan reacciones químicas de los gases o líquidos que se pongan en contacto", cuyas nuevas características de elevada relación superficie por unidad de volumen, robustez mecánica, excelente comportamiento con la temperatura y la posibilidad de crecer capas de óxido de silicio, zeolitas u otros compuestos en las superficies de estas microestructuras y/o de recubrir las paredes de estos microtubos y microtuneles con una amplia variedad de materiales, permiten conseguir grandes ventajas dentro de diversos campos, por ejemplo, dentro de la catálisis aumentando la superficie de contacto con el catalizador y mejorando las características de la reacción.

    Uno de los fines es posibilitar la producción catalítica de hidrógeno para ser suministrado a células de combustible para la obtención de energía en dispositivos portátiles.

  • Advances in Meteoroid and Meteor Science

     Trigo-Rodríguez, José María; Rietmeijer, F J M; Llorca Pique, Jordi; Janches, D (Eds )
    Date of publication: 2008-02
    Book

     Share Reference managers Reference managers Open in new window

  • Hydrogen production by steam reforming of dimethyl ether over Cu-Zn/CeO2-ZrO2 catalytic monoliths

     Ledesma Rodriguez, Cristian; Llorca Pique, Jordi
    XVIII International Conference on Chemical Reactors
    p. 1-5
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • 2007 fireball activity imaged by the spanish fireball network: Identifying meteorite delivery sources

     Trigo Rodríguez, Josep Maria; Madiedo, José María; Castro Tirado, Alberto J.; Llorca Pique, Jordi; Troughton, B.
    Europlanets, 00110
    p. 1-5
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Obtenció i purificació d'hidrogen per a piles de combustible

     Casanovas Grau, Albert; Dominguez Escalante, Montserrat; Ledesma Rodriguez, Cristian; López, E.; Llorca Pique, Jordi
    I Jornada de recerca EUTEIB 04
    p. 1-5
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Catalytic walls and micro devices for generating hydrogen by low-temperature steam reforming of ethanol

     Casanovas Grau, Albert; Dominguez Escalante, Montserrat; Ledesma Rodriguez, Cristian; López, E.; Llorca Pique, Jordi
    International Symposium on Catalysis for Clean Energy and Sustainable Chemistry O02
    p. 1-5
    DOI: doi:10.1016/j.cattod.2008.08.040
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Is asteroid 2002NY40 a rubble pile gravitationally disrupted?

     Trigo Rodríguez, Josep Maria; Bottke, W. F.; Campo Bagatin, A.; Tanga, P.; Llorca Pique, Jordi; Jones, D. C.; Williams, I. P.; Madiedo, José María; Lyytinen, E.
    Lunar and Planetary Science Conference, A1815
    p. 1-10
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Ethanol steam reforming and water gas shift reaction over Co-Mn/ZnO catalysts

     Casanovas Grau, Albert; de Leitenburg, Carla; Trovarelli, Alessandro; Llorca Pique, Jordi
    XVIII International Conference on Chemical Reactors
    p. 1-5
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Low-velocity cometary meteoroid streams encountering the Earth: Clues on the fragmentation of cometary aggregates and implications for interplanetary dust particles

     Madiedo, José María; Trigo Rodríguez, Josep Maria; Llorca Pique, Jordi
    Lunar and Planetary Science Conference, A1815
    p. 2-20
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • MAGnesium New technological Opportunities (MAGNO)

     Llorca Pique, Jordi; Cervera Ruiz, Miguel
    Competitive project

     Share

  • Producció d'hidrogen a partir de biocombustibles amb catalitzadors monolítics funcionalitzats

     Dominguez Iglesias, Montserrat; Casanovas Grau, Albert; Ledesma Rodriguez, Cristian; Llorca Pique, Jordi
    V trobada de joves investigadors de Països Catalans. Societat Catalana de Química O6
    p. 1-5
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Modeling of a three-stage low temperature ethanol steam reforming reactor for fuel cell applications.

     Garcia, Vanesa Mariel; Llorca Pique, Jordi; Serra Prat, Maria; Riera, J.
    Fuel Cell Science and Technology 2008. Scientific Advances in Fuel Cells Systems
    p. 1-77
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • Modelo dinámico de un reformador de etanol a bajas temperaturas para la alimentación de pilas de combustible

     Garcia, Vanesa Mariel; López, Eduardo; Serra Prat, Maria; Llorca Pique, Jordi
    III Congreso Nacional de Pilas de Combustible
    p. 1-5
    Presentation of work at congresses

     Share Reference managers Reference managers Open in new window

  • The Puerto Lápice eucrite fall phenomenon

     Madiedo, José María; Trigo-Rodríguez, José María; Llorca Pique, Jordi; Borovicka, Jiri; Zamorano, J; Izquierdo, J; Ocaña, F
    Lunar and Planetary Science Conference, A1815
    p. 1-5
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window