Exploració per tema "Catalysis"

Ara es mostren els items 1-20 de 104

    • 1-Butanol absorption in poly(styrene-divinylbenzene) ion exchange resins for catalysis 

      Perez Macia, Maria A; Curcó Cantarell, David; Bringue, Roger; Iborra, Monserrat; Rodriguez Ropero, F.; Van der Vegt, N.F.A.; Alemán Llansó, Carlos (2015-01-01)
      Article
      Accés obert
      The swelling behaviour of poly(styrene-co-divinylbenzene), P(S-DVB), ion exchange resins in 1-butanol (BuOH) has been studied by means of atomistic classical molecular dynamics simulations (MD). The topological characteristics ...

    • 3D Printed TiO2 / Pt photocatalyst for VOC elimination 

      Olivares Royo, Nuria (Universitat Politècnica de Catalunya, 2020-06)
      Treball Final de Grau
      Accés obert
      Finding a way to clean the environment from the current pollution levels has become one of the most important matters throughout the past years. As it has been shown during the confinement due to Coronavirus, the moment ...

    • 3D Printing of alumina for catalysis applications 

      Morvan, Titouan (Universitat Politècnica de Catalunya, 2023-02-13)
      Projecte Final de Màster Oficial
      Accés obert
      Aquest projete presenta un estudi detallat sobre l'ús de la técnica d’impressió “Direct Ink Writing” (DIW) per a la fabricació de monòlits d'alumina per a aplicacions de catalisis. L'objectiu principal d'aquesta investigació ...

    • A CrMnFeCoNi high entropy alloy boosting oxygen evolution/reduction reactions and zinc-air battery performance 

      He, Ren; Yang, Linlin; Zhang, Yu; Wang, Xiang; Lee, Seungho; Zhang, Ting; Li, Lingxiao; Liang, Zhifu; Chen, Jingwei; Li, Junshan; Moghaddam, Ahmad Ostovari; Llorca Piqué, Jordi; Ibánez, María; Arbiol Cobos, Jordi; Xu, Ying hao; Cabot, Andreu (Elsevier, 2023-04-01)
      Article
      Accés restringit per política de l'editorial
      The development of cost-effective, high-activity and stable bifunctional catalysts for the oxygen reduction and evolution reactions (ORR/OER) is essential for zinc–air batteries (ZABs) to reach the market. Such catalysts ...

    • A high conductivity 1D p–d conjugated metal–organic framework with efficient polysulfide trapping-diffusion-catalysis in lithium–sulfur batteries 

      Yang, Dawei; Liang, Zhifu; Tang, Pengyi; Zhang, Chaoqi; Tang, Mingxue; Li, Qizhen; Jacas Biendicho, Jordi; Li, Junshan; Heggen, Marc; Dunin-Borkowski, Rafal E.; Xu, Ming; Llorca Piqué, Jordi; Arbiol Cobos, Jordi; Morante, Joan Ramon; Chou, Shu-Lei; Cabot, Andreu (John Wiley & sons, 2022-03-10)
      Article
      Accés obert
      The shuttling behavior and sluggish conversion kinetics of the intermediate lithium polysulfides (LiPS) represent the main obstructions to the practical application of lithium–sulfur batteries (LSBs). Herein, a 1D p–d ...

    • A+B=0 reaction with different initial patterns 

      Sancho, Jose Maria; Romero, A. H.; Lindenberg, Katja; Sagués Mestre, Francesc; Reigada Sanz, R.; Lacasta Palacio, Ana María (American Chemical Society, 1996-10-10)
      Article
      Accés restringit per política de l'editorial
      We present a detailed study of the chemical reaction A + B f 0 in two dimensions for different initial distributions of reactants as characterized by the structure function. We argue that the long-wavelength components ...

    • Acetoacetate based thermosets prepared by dual-Michael addition reactions 

      Konuray, Ali Osman; Fernández Francos, Xavier; Ramis Juan, Xavier; Serra Albet, Maria Àngels (Multidisciplinary Digital Publishing Institute (MDPI), 2019-01-01)
      Article
      Accés obert
      A novel set of dual-curable multiacetoacetate-multiacrylate-divinyl sulfone ternary materials with versatile and manipulable properties are presented. In contrast to common dual-curing systems, the first stage polymer ...

    • Al2O3-supported Pt/Rh catalysts for NOx removal under lean conditions 

      Castoldi, Lidia; Matarrese, Roberto; Daturi, Marco; Llorca Piqué, Jordi; Lietti, Luca (2019-07-05)
      Article
      Accés obert
      In this work the reactivity of Pt-Rh NOx storage-reduction (NSR) catalysts in the reduction of NOx under lean conditions is investigated. It is found that significant amounts of NOx are stored on both Rh- and Pt-based ...

    • 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 ...

    • 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 obert
      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 ...

    • Aromatic stacking interactions govern catalysis in aryl-alcohol oxidase 

      Ferreira, Patricia; Hernández-Ortega, Aitor; Lucas, Fatima; Carro, Juan; Herguedas, Beatriz; Borrelli, Kenneth W.; Guallar, Víctor; Martínez, Angel T.; Medina, Milagros (FEBSPress, 2015-02-23)
      Article
      Accés obert
      Aryl-alcohol oxidase (AAO, EC 1.1.3.7) generates H2O2 for lignin degradation at the expense of benzylic and other π system-containing primary alcohols, which are oxidized to the corresponding aldehydes. Ligand diffusion ...

    • 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 ...

    • Bimetallic Ru–Pd supported on CeO2 for the catalytic partial oxidation of methane into syngas 

      Fazlikeshteli, Shiva; Vendrell Villafruela, Xavier; Llorca Piqué, Jordi (2023-02-15)
      Article
      Accés obert
      A series of monometallic Ru, Pd, and bimetallic Ru–Pd catalysts loaded on CeO2 support have been prepared via mechanochemical and conventional incipient wetness impregnation methods and used in the partial oxidation of ...

    • 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 obert
      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 ...

    • Bioactive films 

      Prado Julià, Maria (Universitat Politècnica de Catalunya, 2023-10-19)
      Treball Final de Grau
      Accés obert
      Aquest projecte de recerca explora el desenvolupament de pel·lícules biocatalítiques mitjançant una novel·la enfocament quimioenzimàtic i iniciat per la superfície. Els nostres resultats demostren que fins i tot en ...

    • Breaking-down the catalyst used for the electrophotosynthesis of amino acids by nitrogen and carbon fixation 

      Sans Milà, Jordi; Armelín Diggroc, Elaine Aparecida; Sanz, Vanesa; Puiggalí Bellalta, Jordi; Turon, Pau; Alemán Llansó, Carlos (2020-09-01)
      Article
      Accés obert
      The electrophotocatalytic synthesis of Glycine and Alanine from a simple gas mixture containing N2, CO2, CH4 and H2O under mild reaction conditions (95 °C and 6 bar) was recently developed using a catalyst formed by ...

    • Carbonaceous catalysts from orange pulp for limonene oxidation 

      Wróblewska, Agnieszka; Serafin, Jaroslaw; Gawarecka, Alicja; Miadlicki, Piotr; Urbas, Karolina; Koren, Zvi C.; Llorca Piqué, Jordi; Michalkiewicz, Beata (2019-01-01)
      Article
      Accés obert
      The possibility of orange pulp utilization for nanoporous carbons production was investigated. Moreover, processing the obtained materials as limonene oxidation catalysts was studied as well. Limonene was separated from ...

    • Catalytic ammonia decomposition over Ni-Ru supported on CeO2 for hydrogen production: Effect of metal loading and kinetic analysis 

      Lucentini, Ilaria; García Colli, Germán; Luzi, Carlos Daniel; Serrano Carreño, M. Isabel; Martínez, Osvaldo Miguel; Llorca Piqué, Jordi (Elsevier, 2021-06-05)
      Article
      Accés obert
      Ceria-supported Ni-Ru bimetallic catalysts with different metal loadings have been prepared by co-impregnation, characterized and tested in the production of hydrogen from the catalytic decomposition of ammonia. The ...

    • Catalytic decomposition of ammonia by a mechanochemical approach 

      Pascua Solé, Laia (Universitat Politècnica de Catalunya, 2021-06-18)
      Projecte Final de Màster Oficial
      Accés obert
      L’hidrogen sorgeix com a una de les millors opcions per conduir el canvi cap a una societat sense cap emissió, al 2050. Tot i això, l’emmagatzematge presenta certs problemes quan s’apliquen a aplicacions mòbils. Es suggereix ...

    • Catalytic performance of bulk and Al2O3-supported molybdenum oxide for the production of biodiesel from oil with high free fatty acids content 

      Navajas León, Alberto; Reyero, I.; Jiménez Barrera, Elena; Romero Sarria, Francisca; Llorca Piqué, Jordi; Gandía, L. M. (2020-02)
      Article
      Accés obert
      Non-edible vegetable oils are characterized by high contents of free fatty acids (FFAs) that prevent from using the conventional basic catalysts for the production of biodiesel. In this work, solid acid catalysts are used ...