Now showing items 48-67 of 414

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      Ca-looping for postcombustion CO2 capture: A comparative 2 analysis on the performances of dolomite and limestone  [Article]

      Valverde Millán, José Manuel; Sánchez Jiménez, Pedro Enrique; Pérez Maqueda, Luis Allan (Elsevier, 2015)
      The low cost and wide availability of natural limestone (CaCO3) is at the basis of the industrial competitiveness of the Ca-looping (CaL) technology for postcombustion CO2 capture as already demonstrated by ~1Mwt scale ...
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      Ca-looping for postcombustion CO2 capture: A comparative analysis on the performances of dolomite and limestone  [Article]

      Valverde Millán, José Manuel; Sánchez Jiménez, Pedro Enrique; Pérez Maqueda, Luis Allan (Pergamon Press, 2015)
      The low cost and wide availability of natural limestone (CaCO3) is at the basis of the industrial competitiveness of the Ca-looping (CaL) technology for postcombustion CO2 capture as already demonstrated by ~1Mwt scale ...
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      Calcium-looping for post-combustion CO2 capture  [Article]

      Valverde Millán, José Manuel; Sánchez Jiménez, Pedro Enrique; Pérez Maqueda, Luis Allan (Elsevier, 2014)
      The multicyclic carbonation/calcination (c/c) of CaO solid particles at high temperature is at the basis of the recently emerged Calcium-looping (CaL) technology, which has been shown to be potentially suitable for achieving ...
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      Cation diffusion in yttria-zirconia by molecular dynamics  [Article]

      González Romero, Roberto Luis; Meléndez, J. J.; Gómez García, Diego; Cumbrera Hernández, Francisco Luis; Domínguez Rodríguez, Arturo; Wakai, F. (Elsevier, 2011)
      This paper presents a novel methodology to calculate cation diffusion coefficients and activation energies in cubic Y2O3–ZrO2 by Molecular Dynamics. The calculation is based upon modulating the interaction potential to ...
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      Cellular Viscosity in Prokaryotes and Thermal Stability of Low Molecular Weight Biomolecules  [Article]

      Cuecas Morano, María de Piedras Alba; Cruces Tova, Jorge; Galisteo López, Juan Francisco; Peng, H. X.; Gonzáles Grau, Juan Miguel (Biophysical Society, 2016-08-23)
      Some low molecular weight biomolecules, i.e., NAD(P)H, are unstable at high temperatures. The use of these biomolecules by thermophilic microorganisms has been scarcely analyzed. Herein, NADH stability has been studied at ...
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      Chalcogenide Quaternary Cu2FeSnS4 Nanocrystals for Solar Cells: Explosive Character of Mechanochemical Synthesis and Environmental Challenge  [Article]

      Baláž, Peter; Baláž, Matej; Sayagués de Vega, María Jesús; Eliyas, Alexander; Kostova, Nina G.; Dutková, Erika; Zorkovská, Anna; Kanuchová, Mária (MDPI, 2017)
      In this study we demonstrate the synthesis of quaternary semiconductor nanocrystals of stannite Cu2FeSnS4/rhodostannite Cu2FeSn3S8 (CFTS) via mechanochemical route using Cu, Fe, Sn and S elements as precursors in one-pot ...
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      Characterisation of Co@Fe3O4 core@shell nanoparticles using advanced electron microscopy  [Article]

      Knappett, Benjamin R.; Abdulkin, Pavel; Ringe, Emilie; Jefferson, David A.; Lozano Pérez, Sergio; Rojas Ruiz, Teresa Cristina; Fernández Camacho, Asunción; Wheatley, Andrew E.H. (Royal Society of Chemistry, 2013)
      Cobalt nanoparticles were synthesised via the thermal decomposition of Co2(CO)8 and were coated in iron oxide using Fe(CO)5. While previous work focused on the subsequent thermal alloying of these nanoparticles, this study ...
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      Characterisation of ternary TixV1-xNy nitride prepared by mechanosynthesis  [Article]

      Alcalá González, María Dolores; Real Pérez, Concepción; Roldán Gutiérrez, Manuel Alberto (Elsevier, 2015)
      In the present manuscript the authors have systematically investigated the composition and microstructure of a series of ternary nitrides (Ti xV1-xNy) (0.0 ≤ x ≤ 1.0) prepared by mechanosynthesis, using XRD, SEM, EELS, XAS ...
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      Characterization and Validation of a‑Si Magnetron-Sputtered Thin Films as Solid He Targets with High Stability for Nuclear Reactions  [Article]

      Fortio Godinho, Vanda Cristina; Ferrer Fernández, Francisco Javier; Fernández Martínez, Begoña; Caballero Hernández, Jaime; Gómez Camacho, Joaquín José; Fernández Camacho, Asunción (American Chemical Society, 2016)
      In this work, we present our magnetron sputtering based methodology to produce amorphous silicon coatings with closed porosity, as a strategy to fabricate solid helium targets, in the form of supported or self-supported ...
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      Characterization of thermally stable gamma alumina fibres biomimicking sisal  [Article]

      Benítez Guerrero, Mónica; Pérez Maqueda, Luis Allan; Sánchez Jiménez, Pedro Enrique; Pascual Cosp, José (Elsevier, 2014)
      Mesoporous gamma alumina fibres of high surface area, stable up to 1000°C, were synthesized by bioreplica technique using sisal fibres as templates. Alumina formation during pyrolysis and calcination of fibres infiltrated ...
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      Chemical and electrical properties of LSM cathodes prepared by mechanosynthesis  [Article]

      Moriche Tirado, Rocío; Marrero López, D.; Gotor Martínez, Francisco José; Sayagués de Vega, María Jesús (Elsevier, 2014)
      Mechanosynthesis of La1-xSrxMnO3 (x = 0, 0.25, 0.5, 0.75 and 1) was carried out at room temperature from stoichiometric mixtures of La2O3, Mn2O3 and SrO, obtaining monophasic powders with the perovskite structure. Physical ...
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      Chemical and microstructural characterization of (Y or Zr)-doped CrAlN coatings  [Article]

      Rojas Ruiz, Teresa Cristina; El Mrabet, Said; Domínguez Meister, Santiago; Brizuela, Marta; García Luis, Alberto; Sánchez López, Juan Carlos (Elsevier, 2012)
      Magnetron sputtered chromium aluminium nitride films are excellent candidates for advanced machining and protection for high temperature applications. In this work CrAlN-based coatings including Y or Zr as dopants (≈ 2 ...
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      Chemical CO2 recycling via dry and bi reforming of methane using Ni-Sn/ Al2O3 and Ni-Sn/CeO2-Al2O3 catalysts  [Article]

      Stroud, T.; Smith, T.J.; Santos, J.L.; Centeno Gallego, Miguel Ángel (Elsevier, 2018)
      Carbon formation and sintering remain the main culprits regarding catalyst deactivation in the dry and bireforming of methane reactions (DRM and BRM, respectively). Nickel based catalysts (10 wt.%) supported on alumina ...
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      Chemical-physical characterization of isolated plant cuticles subjected to low-dose γ-irradiation  [Article]

      Heredia Guerrero, José A.; Lara, Rocio de; Dominguez, Eva; Heredia, Antonio; Benavente, Juana; Benítez Jiménez, José Jesús (Elsevier, 2012)
      Isolated tomato fruit cuticles were subjected to low dose (80 Gy) γ-irradiation, as a potential methodology to prevent harvested fruit and vegetables spoilage. Both irradiated and non-irradiated samples have been ...
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      Chemistry, nanostructure and magnetic properties of Co-Ru-B-O nanoalloys  [Article]

      Arzac, G. M.; Rojas Ruiz, Teresa Cristina; Gontard, Lionel C.; Chinchilla, Lidia E; Otalora, E.; Crespo, P.; Fernández Camacho, Asunción (Royal Society of Chemistry, 2014)
      In our previous works, Co-B-O and Co-Ru-B-O ultrafine powders with variable Ru content (xRu) were studied as catalysts for hydrogen generation through sodium borohydride hydrolysis. These materials have shown a complex ...
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      Cholesterol biosensing with a polydopamine-modified nanostructured platinum electrode prepared by oblique angle physical vacuum deposition  [Article]

      Martín, Mirian; Álvarez Molina, Rafael; Palmero Acebedo, Alberto; López Santos, Carmen; González Mora, José Luis; Salazar, Pedro; Rodríguez González-Elipe, Agustín (Elsevier, 2017)
      This paper reports a novel cholesterol biosensor based on nanostructured platinum (Pt) thin films prepared by Magnetron Sputtering (MS) in an oblique angle (OAD) configuration. Pt thin films were deposited onto a gold ...
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      Clarifications regarding the use of model-fitting methods of kinetic analysis for determining the activation energy from a single non-isothermal curve  [Article]

      Sánchez Jiménez, Pedro Enrique; Pérez Maqueda, Luis Allan; Perejón Pazo, Antonio; Criado Luque, José Manuel (Chemistry Central, 2013)
      Abstract Background This paper provides some clarifications regarding the use of model-fitting methods of kinetic analysis for estimating the activation energy of a process, in response to some results recently published ...
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      CO oxidation at low temperature on Au/CePO4: Mechanistic aspects  [Article]

      Romero Sarria, Francisca; Domínguez Leal, María Isabel; Centeno Gallego, Miguel Ángel; Odriozola Gordón, José Antonio (Elsevier, 2011)
      This work reports the synthesis and characterization of a cerium phosphate supported gold catalyst as well as its catalytic activity for the oxidation of CO. A precipitation method in the presence of an organic modifier ...
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      CO oxidation: effect of Ce and Au addition on MnOx catalysts  [Article]

      Peluso, M.A.; Hernández, W.Y; Domínguez Leal, María Isabel; Thomas, H.J.; Centeno Gallego, Miguel Ángel; Sambeth, J.E. (Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina) Universidad Nacional del Sur (Argentina), 2012)
      The effect of cerium and/or gold addition to a manganese oxide which was greatly active in CO oxidation was studied. The catalysts obtained by this way were characterized by N2 adsorption, XRF, XRD and TPR, and their ...
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      CO2 capture performance of Ca-Mg acetates at realistic Calcium Looping conditions  [Article]

      Miranda Pizarro, Juan; Perejón Pazo, Antonio; Valverde Millán, José Manuel; Pérez Maqueda, Luis Allan; Sánchez Jiménez, Pedro Enrique (Elsevier, 2017)
      The Calcium Looping (CaL) process, based on the cyclic carbonation/calcination of CaO, has emerged in the last years as a potentially low cost technique for CO2 capture at reduced energy penalty. In the present work, natural ...