Listar UTN- FRC -Producción Académica de Investigación y Desarrollo por autor "Martínez, María Laura"

Mostrando ítems 21-33 de 33

  • Multiple-wall carbón nanotubes obtained with mesoporous material decorated with cerio-zirconium 

    Martínez, María Laura; Anunziata, Oscar A. (2020)
    In this work, Ce-Zr-SBA-15 has been used directly as a catalyst for the synthesis of multi-vall carbon nanotubes (MWCNT) through Chemical Vapor Deposition (CVD). In addition to cerium oxide, it contains zirconium oxide ...

  • 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 ...

  • 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 ...

  • Super-acid sulfated/zirconium-containig nanostructured carbons 

    Martínez, María Laura; Anunziata, Oscar A. (2020)
    In this work, we report the successful preparation of a superacid mesoporous carbon functionalized with sulfated zirconia (SZr-C). SZr-C has a surface area of approximately 1300 m2 g-1, and the total pore volume of 0.94 ...

  • Superacid mesoporous carbón base don sulfated Zr 

    Anunziata, Oscar A.; Martínez, María Laura (2020)
    In this brief communication we report the successful preparation of a promising material with acidic properties from starch-derived mesoporous carbon (SMC), functionalized with sulfated zirconia. The process of assembling ...

  • Synthesis and characterization of conducting polypyrrole/SBA-3 and polypyrrole/Na–AlSBA-3 composites 

    Gómez Costa, Marcos Bruno; Juárez, Juliana; Martínez, María Laura; Beltramone, Andrea Raquel; Cussa, Jorgelina; Anunziata, Oscar Alfredo (2012)
    Si-SBA-3 and Na–AlSBA-3 materials were synthesized for application in the preparation of composites. Silica mesoporous materials were obtained following the sol–gel method and post-synthesis alumination. Pyrrole-saturated ...

  • 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 ...

  • 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 ...

  • 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 ...

  • 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 ...

  • 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 ...