Mostrando ítems 1-20 de 535

  • Synthesis and characterization of new composites: PANI/Na-AlSBA-3 and PANI/Na-AlSBA-16 

    Martínez, María Laura; Luna D´Amicis, Froilán A.; Beltramone, Andrea Raquel; Gómez Costa, Marcos Bruno; Anunziata, Oscar Alfredo (2011)
    The new aluminosilicate materials (Na-AlSBA-3 and Na-AlSBA-16) were synthesized for application in the preparation of composites. Silica mesoporous materials were obtained following the sol–gel method and post-synthesis ...
  • Synthesis of ordered mesoporous SBA-3 materials using silica gel as silica source 

    Martínez, María Laura; Ponte, María Virginia; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    Nanostructured materials have exceptional and highly attractive properties, including catalyst, adsor- bent, separation media and chemo sensor. Technical advances in these fields require the development of ordered porous ...
  • Hydrogenation of tetralin over Ir-containing mesoporous catalysts 

    Vallés, Verónica; Balangero, Gerardo Simón; Martínez, María Laura; Gómez Costa, Marcos Bruno; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2012)
    The yield in fluid catalytic cracking (FCC) depends on the extent of aromatic hydrogenation in the gas oil hydrotreater. To optimize the gas oil hydrotreater, it is crucial to understand the aromatic hydrogenation reaction ...
  • Simultaneous optimization of methane conversion and aromatic yields by catalytic activation with ethane over Zn-ZSM-11 zeolite: the influence of the Zn-loading factor 

    Anunziata, Oscar Alfredo; Cussa, Jorgelina; Beltramone, Andrea Raquel (2011)
    Experiment design-response surface methodology (RSM) is used in this work to model and optimize two responses in the process of activation of methane (C1) using ethane (C2) as co-reactant into higher hydro- carbons, over ...
  • Inhibition of the hydrogenation of tetralin by nitrogen and sulfur compounds over Ir/SBA-16 

    Balangero, Gerardo Simón; Martínez, María Laura; Gómez Costa, Marcos Bruno; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2011)
    In this work we study the catalytic properties of 5 wt.% Ir-containing SBA-16 catalysts (with and without aluminum as heteroatom), in the hydrogenation of tetralin to decalin, in the presence of 100 ppm of N as quinoline, ...
  • XANES-PCA analysis of Ti-species in MCM-41 mesoporous silica synthesized by different methods 

    Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel; Martínez, María Laura; Giovanetti, Lisandro J.; Requejo, Félix G.; Ledec, Eduardo (2011)
    MCM-41 mesoporous silica was prepared with Ti incorporated in the structure by two different ways: hydrothermal and atmospheric pressure by sol–gel method. To evaluate each synthesis, these materials were in situ investigated ...
  • Síntesis y caracterización de SBA-3: a partir de una sal metalica 

    Ponte, María Virginia; Martínez, María Laura; Cussa, Jorgelina; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    Materiales porosos bimodales son materiales que poseen poros de dos tamaños diferentes. En estos materiales, las superficies de los pequeños poros pueden interactuar con moléculas, mientras que grandes poros proporcionan ...
  • Síntesis y caracterización de un catalizador soportado iridio/platino-SBA-15 para su aplicación 

    Vallés, Verónica; Ledesma, Brenda; Rivoira, Lorena Paola; Cussa, Jorgelina; Martínez, María Laura; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    En el presente trabajo se estudió el efecto de la dispersión de metales nobles Ir y Pt y la interacción con el soporte SBA-15, relacionándolos con la actividad catalítica del catalizador en la reacción de hidrogenación ...
  • Desulfuración oxidativa utilizando material mesoporoso Ti-SBA-16 

    Rivoira, Lorena Paola; Vallés, Verónica; Ledesma, Brenda; Martínez, María Laura; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    La oxidación de compuestos organosulfurados conduce a la formación de los sulfóxidos/sulfonas correspondientes, lo que permite que sean fácilmente removidos mediante extracción en solventes polares o por adsorción. El ...
  • Material catalitico Ir/Ti-SBA-16 para la hidrogenación de tetralin 

    Ledesma, Brenda; Vallés, Verónica; Rivoira, Lorena Paola; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    En el presente trabajo informamos resultados de la hidrogenación efectiva de tetralín en presencia de quinolina, en condiciones menos severas que las industriales; para lo cual desarrollamos un nuevo material catalítico ...
  • Eliminación de azufre mediante desulfuración oxidativa con SBA-16 modificada con titanio 

    Rivoira, Lorena Paola; Vallés, Verónica; Ledesma, Brenda; Martínez, María Laura; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    La oxidación de compuestos organosulfurados conduce a la formación de los sulfóxidos/sulfonas correspondientes, los cuales son mucho más polares, lo que permite que sean fácilmente removidos mediante extracción en ...
  • Hidrogenación de tetralin en presencia de quinolina sobre Ir/SBA-16 modificada con titanio 

    Ledesma, Brenda; Vallés, Verónica; Rivoira, Lorena Paola; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    En el presente trabajo informamos resultados de la hidrogenación efectiva de tetralin en presencia de quinolina, en condiciones menos severas que las industriales; para lo cual desarrollamos un nuevo material catalítico ...
  • Hidrogenación de tetralin utilizando un catalizador bifuncional de iridio/platino-SBA-15 

    Vallés, Verónica; Ledesma, Brenda; Rivoira, Lorena Paola; Cussa, Jorgelina; Martínez, María Laura; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    Los catalizadores bimetálicos de Pt–Pd han recibido considerable atención debido a que demuestran tener una alta actividad en una amplia variedad de aplicaciones catalíticas (1). Con alta actividad, selectividad ...
  • Estudio de la influencia de la temperatura de síntesis y la concentración de surfactante en la síntesis de SBA-3 

    Ponte, María Virginia; Martínez, María Laura; Gómez Costa, Marcos Bruno; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    En este trabajo se presentan resultados de preparación y caracterización de SBA-3, estudiando la variación de la temperatura de síntesis, así como la de la relación molar CTAB/TEOS. Condiciones de síntesis suaves (303 ...
  • Synthesis, characterization and catalytic performance of bimetallic Ir-Pt catalysts for tetralin hydrogenation 

    Vallés, Verónica; Ledesma, Brenda; Rivoira, Lorena Paola; Cussa, Jorgelina; Martínez, María Laura; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    Bimetallic Pt–Pd catalysts have received considerable attention, because they show high activity in a variety of catalytic applications (1) and stability compared with monometallic Pt or Pd catalysts. For instance, the ...
  • New synthesis of SBA-3 mesoporous material using silica gel as silica source 

    Martínez, María Laura; Ponte, María Virginia; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    One of the main areas of interest in materials chemistry is the synthesis of mesoporous molecular sieves with highly controllable morphologies for the purpose of providing catalytic, separation, and adsorption applications ...
  • Syntesis, characterization and hydrotreating catalitic performance of Ir/Ti-SBA-16 and Ir/TIO2-SBA-16. 

    Ledesma, Brenda; Vallés, Verónica; Rivoira, Lorena Paola; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    A series of Ti modified SBA-16 supports and their respective Ir-catalysts were prepared, and characterized to study the effect of support preparation method on the dispersion of iridium and on the characteristics of Ir ...
  • Titania-modifed SBA-16 applied to oxidative desulfuration of DBT 

    Rivoira, Lorena Paola; Vallés, Verónica; Ledesma, Brenda; Martínez, María Laura; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    Recent results show that Ti-containing molecular sieves exhibit good catalytic reactivity in the oxidation of sulfide, mercaptan, thiophene and derivatives [1]. In this work, we describe the preparation and characterization ...
  • Tetralin hydrogenation and ring opening of decalin over Ir-Pt-SBA-15 

    Vallés, Verónica; Rivoira, Lorena Paola; Ledesma, Brenda; Cussa, Jorgelina; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    A series of Ir and Pt modified SBA-15 were prepared by the consecutive wet impregnation method, with different content of each metal. The final catalysts were characterized by XRD, TEM and H2 chemisorption to study the ...
  • Synthesis, characterization and hydrotreating activity of Ir catalysts supported on titania-modified mesoporous material 

    Ledesma, Brenda; Vallés, Verónica; Rivoira, Lorena Paola; Martínez, María Laura; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    A titanium modified catalyst based on noble metal has been prepared with the main aim of obtaining Nitrogen-tolerant catalysts to be used in second stage processes of mild-hydrotreating. We study the catalytic properties ...