Ara es mostren els items 1-20 de 40

    • Analysis of the reaction mechanism of the thiol-epoxy addition initiated by nucleophilic tertiary amines 

      Osman Konuray, Ali; Fernández Francos, Xavier; Ramis Juan, Xavier (2017-10-14)
      Article
      Accés obert
      A kinetic model for thiol–epoxy crosslinking initiated by tertiary amines has been proposed. The kinetic model is based on mechanistic considerations and it features the effect of the initiator, hydroxyl content, and ...
    • Análisis cinético y matemático de la tintura de tencel con colorantes directos 

      Lis Arias, Manuel José; Valldeperas Morell, José; Carrillo Navarrete, Fernando; Navarro Viciana, Juan Antonio (2006-07)
      Article
      Accés obert
      En un intento de cuantificar el comportamiento tintóreo de la fibra Tencel con colorantes directos, se propone un enfoque por mecanismos que permite realizar un análisis del proceso desde dos puntos de vista: Cinético y ...
    • 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 ...
    • Assessment of kinetic model for ceria oxidation for chemical-looping CO2 dissociation 

      Farooqui, A.E.; Manfredi Pica, A.; Marocco, P.; Ferrero, D.; Lanzini, A.; Fiorilli, S.; Llorca Piqué, Jordi; Santarelli, Massimo (2018-08-15)
      Article
      Accés obert
      Chemical looping technologies are identified as to have an excellent potential for CO2 capture and fuels synthesis. Oxygen carriers are the fundamental component of a chemical looping process, and the choice of stable and ...
    • Characterization of chromium (III) removal from aqueous solutions by an immature coal (leonardite). Toward a better understanding of the phenomena involved 

      Lao Luque, Concepción; Solé Sardans, Maria Montserrat; Gamisans Noguera, Javier; Valderrama Angel, César Alberto; Dorado Castaño, Antonio David (2014-01)
      Article
      Accés obert
      Removal of chromium (III) from aqueous solutions by leonardite (a low-cost adsorbent) was studied in a series of batch experiments. Stabilization of the adsorbent material with alginate beads was also investigated. The ...
    • Cinética, Equilibrio y Transporte de materia en la hidratación Catalítica directa de Isobuteno a Ter-Butanol 

      Velo García, Enrique (Universitat Politècnica de Catalunya, 1992-12-17)
      Tesi
      Accés obert
      L'objectiu d'aquesta Tesi Doctoral és la modelització matemàtica del procés d'hidratació catalítica directa de isobutè a ter butanol sobre Amberlyst-15 en un reactor de llit fix escorregut en equicorrent descendent. La ...
    • Click-based dual-curing thermosets and their applications 

      Ramis Juan, Xavier; Fernández Francos, Xavier; Flor López, Sílvia de la; Ferrando Piera, Francesc; Serra Albet, Maria Àngels (Elsevier, 2018)
      Capítol de llibre
      Accés restringit per política de l'editorial
      Dual curing is the methodology for obtaining thermosets by combining two different and compatible polymerization reactions, taking place sequentially or simultaneously. Sequential dual-curing processing enables the preparation ...
    • Complex wave patterns in an effective reaction–diffusion model for chemical reactions in microemulsions 

      Alonso Muñoz, Sergio; John, Karin; Baer, Markus (American Institute of Physics (AIP), 2011-03-07)
      Article
      Accés obert
      An effective medium theory is employed to derive a simple qualitative model of a pattern forming chemical reaction in a microemulsion. This spatially heterogeneous system is composed of water nanodroplets randomly distributed ...
    • Development of a kinetic model for elemental sulfur and sulfate formation from the autotrophic sulfide oxidation using respirometric techniques 

      Gonzalez Sánchez, A; Tomas, M; Dorado Castaño, Antonio David; Gamisans Noguera, Javier; Guisasola, Albert; Lafuente Sancho, Francisco Javier; Gabriel Buguña, David (2009-04-01)
      Article
      Accés obert
      A kinetic model for the elemental sulfur and sulfate production from the autotrophic sulfide oxidation has been proposed. It is based on two kinetic equations able to describe the simultaneous microbial consumption of ...
    • Effective medium approach for heterogeneous reaction-diffusion media 

      Alonso Muñoz, Sergio; Baer, Markus; Kapral, Raymond (American Institute of Physics (AIP), 2009-12-01)
      Article
      Accés obert
      An effective medium theory that can be used to calculate effective diffusion and reaction rate coefficients in random heterogeneous reaction-diffusion systems is described. The predictions of the theory are compared with ...
    • Electrospun PLLA membranes for caffeine delivery: diffusional approach 

      Immich, Ana Paula; Tornero García, José Antonio; Cano Casas, Francesc; Lis Arias, Manuel José (Springer, 2017-12-29)
      Article
      Accés obert
      One of the great advantages of electrospun fibers is the large tridimensional area produced, capable of storing any type of material. The aim of our investigation is to study the electrospinning technique to produce polymer ...
    • Equilibri iònic i cinètica : problemes 

      Aguilar Sanjuán, Manuel; Casas Pons, Ignasi; Cortina Pallás, José Luís; Farran Marsà, Adriana; Florido Pérez, Antonio; Giménez Izquierdo, Francisco Javier; Martínez Martínez, María del Rosario; Miralles Esteban, Núria; Pablo Ribas, Joan de; Sastre Requena, Ana María (Edicions UPC, 2004)
      Llibre
      Accés restringit a la comunitat UPC
      Aquest llibre s'adreça principalment als alumnes que cursen les assignatures Química I, de la titulació d'Enginyeria Industrial, i Equilibris iònics, de la titulació d'Enginyeria Química, ambdues impartides a l'Escola ...
    • Equilibri iònic i cinètica : problemes 

      Aguilar Sanjuán, Manuel; Casas Pons, Ignasi; Cortina Pallás, José Luís; Farran Marsà, Adriana; Florido Pérez, Antonio; Giménez Izquierdo, Francisco Javier; Martínez Martínez, María del Rosario; Miralles Esteban, Núria; Pablo Ribas, Joan de; Sastre Requena, Ana María (Edicions UPC, 2003)
      Llibre
      Accés restringit a la comunitat UPC
      Aquest llibre s'adreça principalment als alumnes que cursen les assignatures Química I, de la titulació d'Enginyeria Industrial, i Equilibris iònics, de la titulació d'Enginyeria Química, ambdues impartides a l'Escola ...
    • Estudio cinético de la extracción sólido-líquido de los compuestos polifenólicos del residuo del aguacate 

      Segovia Gómez, Francisco José; Corral, Juan José; Almajano Pablos, María Pilar (EUETIB, 2013-12)
      Comunicació de congrés
      Accés obert
      Cada vez más, los polifenoles son el centro de interés de muchas industrias alimentarias y de cosmética debido a su alta capacidad antioxidante. Además, se ha demostrado que su consumo a través de frutas y verduras ayuda ...
    • Experimental evidence of localized oscillations in the photosensitive chlorine dioxide-iodine-malonic acid reaction 

      Míguez, David G.; Alonso Muñoz, Sergio; Pérez Muñuzuri, Alberto; Sagués Mestres, Francesc (American Institute of Physics (AIP), 2006-10-24)
      Article
      Accés obert
      The interaction between Hopf and Turing modes has been the subject of active research in recent years. We present here experimental evidence of the existence of mixed Turing-Hopf modes in a two-dimensional system. Using ...
    • Features in chemical kinetics. I. Signatures of self-emerging dimensional reduction from a general format of the evolution law 

      Nicolini, Paolo; Frezzato, Diego (2013-06-17)
      Article
      Accés restringit per política de l'editorial
      Simplification of chemical kinetics description through dimensional reduction is particularly important to achieve an accurate numerical treatment of complex reacting systems, especially when stiff kinetics are considered ...
    • Features in chemical kinetics. II. A self-emerging definition of slow manifolds 

      Nicolini, Paolo; Frezzato, Diego (2013-06-21)
      Article
      Accés restringit per política de l'editorial
      In the preceding paper of this series (Part I, P. Nicolini and D. Frezzato, J. Chem. Phys. 138, 234101(2013)) we have unveiled some ubiquitous features encoded in the systems of polynomial differential equations normally ...
    • From curing kinetics to network structure: A novel approach to the modeling of the network buildup of epoxy-anhydride thermosets 

      Fernández Francos, Xavier; Ramis Juan, Xavier; Serra Albet, Maria Àngels (2014-01-01)
      Article
      Accés restringit per política de l'editorial
      The curing kinetics and network buildup during curing of epoxy–anhydride formulations using tertiary amines as initiators are reviewed in this work. A mechanism-based kinetic and structural model has been defined, showing ...
    • Human hair biogenic fiber as a biosorbent of multiple heavy metals from aqueous solutions 

      Zhang, Helan; Carrillo Navarrete, Fernando; Palet Ballús, Cristina (2020-08-10)
      Article
      Accés obert
      Human hair natural fiber is mainly considered a waste in our society and its disposal can cause a major environmental impact. Hence, its valorization as a biosorbent of pollutants such as heavy metals is an interesting ...
    • Influence of Si substitution on the reactivity of a-tricalcium phosphate 

      Motisuke, Mariana; Mestres, Gemma; Renó, Caroline O.; Carrodeguas, Raúl G.; Zavaglia, Cecilia; Ginebra Molins, Maria Pau (Elsevier, 2017-06-01)
      Article
      Accés obert
      Silicon substituted calcium phosphates have been widely studied over the last ten years due to their enhanced osteogenic properties. Notwithstanding, the role of silicon on a-TCP reactivity is not clear yet. Therefore, the ...