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

Mostrando ítems 1-20 de 26

  • Catalytic oxidation of sulfur compounds over Ce-SBA-15 and Ce-Zr-SBA-15 

    Rivoira, Lorena Paola; Vallés, Verónica Alejandra; Martínez, María Laura; Yanika, Sa-ngasaeng; Siriporn, Jongpatiwut (2021)
    The catalytic oXidation of different sulfur compounds, commonly present in liquid fuel, was studied over a series of ceria and ceria-zirconium based oXidation mesoporous catalysts. SBA-15 was synthesized using sol-gel ...

  • 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 ...

  • 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 ...

  • Esterification of succinic acid using sulfated zirconia supported on SBA-15 

    Aguzin, Federico L.; Martínez, María Laura; Beltramone, Andrea Raquel; Padró, Cristina L.; Okulik, Nora (2021)
    Catalytic esterification of succinic acid with ethanol to obtain diethyl succinate (DES), a nontoxic plasticizer, is reported. Three sulfated zirconias supported on SBA-15 [SZ-SBA-15(X)] with Si/Zr molar ratios (X) of 10, ...

  • 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 ...

  • EXperimental design optimization of the ODS of DBT using vanadium oXide supported on mesoporous Ga-SBA-15 

    Rivoira, Lorena Paola; Cussa, Jorgelina; Martínez, María Laura; Beltramone, Andrea Raquel (2020)
    EXperiment design-response surface methodology is applied in this work to model and optimize the o Xidation of dibenzothiophene (DBT) using VOX-Ga-SBA-15 catalyst. The analyzed variables are the influence of the nature of ...

  • HDT of the model diesel feed over Ir-modified Zr-SBA-15 catalysts 

    Vallés, Verónica Alejandra; Yanika, Sa-ngasaeng; Martínez, María Laura; Siriporn, Jongpatiwut; Beltramone, Andrea Raquel (2018)
    Iridium catalyst using different zirconium modified-SBA-15 supports were tested in the HDT of tetralin and typical sulfur and nitrogen compounds present in diesel feed. The zirconium modified-SBA-15 supports were synthesized ...

  • 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 ...

  • Hydrodenitrogenation of indol using iridium catalyst supported on titanium nanotubes 

    Ledesma, Brenda Cecilia; Martínez, María Laura; Gómez Costa, Marcos Bruno; Beltramone, Andrea Raquel (2022)
    The HDN of indole was studied over iridium modified titanate nanotube catalyst. Titaniun nanotube was prepared by the alkaline hydrothermal method. Iridium was added by wetness impregnation. The activity was compared ...

  • Hydrogenation of tetralin over Ir catalysts supported on titania-modified SBA-16 

    Ledesma, Brenda; Vallés, Verónica; Rivoira, Lorena Paola; Martínez, María Laura; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel (2014)
    Abstract A series of Ti modified SBA-16 supports and their respective Ir-catalysts were prepared and character- ized to study the effect of support preparation method on the dispersion of iridium and on the characteristics ...

  • 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 ...

  • Indole HDN using iridium nanoparticles supported on titanium nanotubes 

    Ledesma, Brenda Cecilia; Martínez, María Laura; Gómez Costa, Marcos Bruno; Beltramone, Andrea Raquel (2022)
    The HDN of indole was studied over iridium modified titanate nanotube catalyst. Titanium nanotube was prepared by the alkaline hydrothermal method. Iridium was added by wetness impregnation. The activity was compared with ...

  • 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, ...

  • Iridium-supported SBA-15 modified with Ga and Al as a highly active catalyst in the hydrodenitrogenation of quinoline 

    Ledesma, Brenda Cecilia; Martínez, María Laura; Beltramone, Andrea Raquel (2020)
    Ir-supported SBA-15 was studied in the hydrodenitrogenation (HDN) of quinoline as a model nitrogen com- pound. The activity was improved when Si-SBA-15 support was modified with Ga and Al. Characterization of the catalysts ...

  • Iron-modified mesoporous materials as catalysts for ODS of sulfur compounds 

    Rivoira, Lorena Paola; Juárez, Juliana María; Martínez, María Laura; Beltramone, Andrea Raquel (2020)
    Fe-modified mesoporous catalysts were used in the ODS of DBTs using H2O2 as oXidant and acetonitrile as solvent. SBA-15, MCM-48, CMK-3 and CMK-1 were used as supports. Iron was incorporated using iron nitrate by wetness ...

  • Multiple-wall carbon nanotubes obtained with mesoporous material decorated with ceria-zirconia 

    Rodríguez, Miguel Angel; Anunziata, Oscar Alfredo; Beltramone, Andrea Raquel; Martínez, María Laura (2020)
    In this work, Ceria-Zirconia on ordered Santa Barbara mesoporous silica (Ce-Zr-SBA-15), has been used directly as a catalyst for the synthesis of carbon nanotubes (CNTs) through Chemical Vapor Deposition (CVD). In addition ...

  • 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 ...

  • 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 ...