Now showing items 1-19 of 19

    • Binary interaction parameters from reacting mixture data. Supercritical biodiesel process with CO2 as cosolvent 

      Valverde Salamanca, Abel; Osmieri, Luigi; Recasens Baxarías, Francisco Javier (2019-01-01)
      Article
      Open Access
      A method is presented for the calculation of binary interaction parameters from reacting mixture data. The process studied is the supercritical methanol transesterification of triolein with CO2 as cosolvent. The reaction ...
    • Boosted CO2 reaction with methanol to yield dimethyl carbonate over Mg–Al hydrotalcite-silica lyogels 

      Stoian, D.C.; Taboada, E.; Llorca Piqué, Jordi; Molins, E.; Medina, F.; Segarra, A.M. (2013-05-13)
      Article
      Restricted access - publisher's policy
      Nonimmobilized and immobilized Mg–Al hydrotalcite-like materials on silica lyogels were prepared and activated by calcination to be tested as catalysts in the direct carboxylation reaction of methanol. The HTs supportedon ...
    • Computer simulation of liquid methanol ii:system size effects 

      Casulleras Ambrós, Joaquín; Guàrdia Manuel, Elvira (1991-01)
      Article
      Restricted access - publisher's policy
      A series of molecular dynamics simulations of liquid methanol has been carried out on a supernode transputer array. Four system sizes from 125 to 512 molecules have been considered, in order to study the effect of system ...
    • La destil·lació reactiva al laboratori 

      Castilla Ballesteros, Gloria (Universitat Politècnica de Catalunya, 2016-07)
      Bachelor thesis
      Open Access
      La destil·lació reactiva es fonamenta en fer servir la columna de destil·lació com a propi reactor químic i en el principi de la destil·lació, separar els productes gràcies a la diferència entre els seus punts d’ebullició, ...
    • Enriquiment d’una població d’arqueobacteris metanogènics hidrogenotròfics en un reactor UASB 

      Morey Gual, Lluís (Universitat Politècnica de Catalunya, 2015-02-05)
      Bachelor thesis
      Open Access
      Abstract Anaerobic digestion is a technology widely known for the treatment of organic wastes. By this process the organic matter is partially mineralized and a fuel gas, biogas, is obtained, with a high methane content. ...
    • Estudi de viabilitat de la conversió de biogàs en metanol 

      Guarinos Gran, Alba (Universitat Politècnica de Catalunya, 2018-06)
      Master thesis
      Restricted access - author's decision
      En el present treball es recorrerà el camí que s’ha seguit per tal de poder estudiar la viabilitat de la conversió del biogàs en metanol. En una primera instància, es van analitzar quins eren els diferents mètodes que es ...
    • Estudio calorimétrico de los cambios en la cristalinidad de membranas 

      Salla Tarragó, José María; Cadenato Matia, Ana María; Morancho Llena, José María; Fernández Francos, Xavier; Ramis Juan, Xavier (2011)
      Conference lecture
      Restricted access - publisher's policy
      En este trabajo se analizan los cambios en el grado de cristalización y en los hábitos cristalinos que el ácido sulfosuccínico (SSA) produce en membranas de polivinil alcohol (PVA). Las membranas resultantes del ...
    • Inoculum characterization: identification of acetate consumption routes 

      García Ruiz, Javier; Flotats Ripoll, Xavier; Tey, Laura; Fernández García, Belén (2015)
      Conference lecture
      Open Access
      A mesophilic inoculum, likely to have syntrophic acetate oxidation bacteria (SAOB) and hydrogenotrophic methanogen (HM) activity due to operational conditions, was characterized by means of methanogenic activity tests, ...
    • Ionic association of Na+-Cl-, Na+-Na+ and Cl--Cl- in methanol: mean force potentials and friction kernels 

      Sesé Castel, Gemma; Guàrdia Manuel, Elvira; Padro Cardenas, Joan Angel (1995-08)
      Article
      Restricted access - publisher's policy
      Kinetic investigation of 1-octene bromination in AOT-isooctane-water microemulsions (13 = w = [H2O]/[AOT] = 24 and 6 = z = [IO]/[AOT] = 57) shows that the reaction is first-order in alkene and first-order in bromine, as ...
    • 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
      Open Access
      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
      Restricted access - publisher's policy
      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 ...
    • NiSn bimetallic nanoparticles as stable electrocatalysts for methanol oxidation reaction 

      Li, Junshan; Luo, Zhishan; Zuo, Yong; Liu, Junfeng; Zhang, Ting; Tang, Pengyi; Arbiol, Jordi; Llorca Piqué, Jordi; Cabot Codina, Andreu (2018-10-15)
      Article
      Open Access
      Nickel is an excellent alternative catalyst to high cost Pt and Pt-group metals as anode material in direct methanol fuel cells. However, nickel presents a relatively low stability under operation conditions, even in ...
    • On the positional and orientational order of water and methanol around indole: a study on the microscopic origin of solubility 

      Henao Aristizábal, Andrés; Johnston, Andrew J; Guàrdia Manuel, Elvira; McLain, Sylvia E.; Pardo Soto, Luis Carlos (2016-09-07)
      Article
      Open Access
      Although they are both highly polar liquids, there are a number of compounds, such as many pharmaceuticals, which show vastly different solubilities in methanol compared with water. From theories of the hydrophobic effect, ...
    • Orientational dynamics in methanol: influence of temperature and hydrogen bonding 

      Ortiz de Urbina Viade, Jordi; Sesé Castel, Gemma (2020-03-01)
      Article
      Restricted access - publisher's policy
      Rotational diffusion has been investigated in methanol by means of molecular dynamics simulations at several temperatures, approaching the supercooled state. Angular velocity autocorrelation functions in the molecule-fixed ...
    • Single step combustion synthesized Cu/Ce0.8Zr0.2O2 for methanol steam reforming: Structural insights from in situ XPS and HRTEM studies 

      Das, Dipak; Llorca Piqué, Jordi; Domínguez Escalante, Montserrat; Gayen, Arup (2015-11-02)
      Article
      Open Access
      Single step combustion synthesized Cu (5–15 at.-%)/Ce0.8Zr0.2O2 materials containing highly dispersed copper have been assessed for methanol steam reforming (MSR). The activity patterns suggest Cu (10 at.-%)/Ce0.80Zr0.20O2 ...
    • Superior methanol electrooxidation performance of (110)-faceted nickel polyhedral nanocrystals 

      Li, Junshan; Zuo, Yong; Liu, Junfeng; Du, Ruifeng; Infante Carrió, Maria F.; Tang, Pengyi; Arbiol, Jordi; Llorca Piqué, Jordi; Cabot Codina, Andreu (Royal Society of Chemistry (RSC), 2019-10-14)
      Article
      Restricted access - publisher's policy
      We present the synthesis of (110)-faceted nickel polyhedral nanocrystals (NCs) and their characterization as electrocatalysts for the methanol oxidation reaction (MOR). Ni NCs were produced at 180 °C through the reduction ...
    • The combustion mitigation of methane as a non-CO2 greenhouse gas 

      Jian, X.; Mira, Daniel; Cluff, D.L. (Elsevier, 2018-05)
      Article
      Open Access
      Anthropogenic emissions of non-CO2 greenhouse gases such as fugitive methane contribute significantly to global warming. A review of fugitive methane combustion mitigation and utilisation technologies, which are primarily ...
    • Three-dimensional ruthenium-doped TiO2 sea urchins for enhanced visible-light-responsive H-2 production 

      Thuy Duong, Nguyen-Phan; Luo, Si; Vovchok, Dimitriy; Llorca Piqué, Jordi; Sallis, Shawn; Kattel, Shyam; Xu, Wenqian; Piper, Louis F. J.; Poliansky, Dimitry E.; Senanayake, Sanjaya D.; Stacchiola, Darío J.; Rodriguez, Jose A. (2016-06-21)
      Article
      Open Access
      Three-dimensional (3D) monodispersed sea urchin-like Ru-doped rutile TiO2 hierarchical architectures composed of radially aligned, densely-packed TiO2 nanorods have been successfully synthesized via an acid-hydrothermal ...
    • Vegetable oil tansesterification in supercritical conditions using Co-solvent carbon dioxide over solid catalysts: A screening study 

      Saez, B; Santana, A; Ramírez-Llodra, E.; Maçaira Nogueira, Jose Miguel Lopes; Ledesma Rodriguez, Cristian; Llorca Piqué, Jordi; Larrayoz Iriarte, María Angeles (American Chemical Society (ACS), 2014-09-01)
      Article
      Restricted access - publisher's policy
      The transesterification reaction employing supercritical methanol and carbon dioxide used as a co-solvent in the presence of several heterogeneous solid acid catalysts was investigated. The solid acid catalysts were prepared ...