Search Results - "Marcelo Oportus"

Influence of Temperature and Time of Seed Aging on the Properties of Beta Zeolite/MCM-41 Materials by Grecco, Saulo T. F., Urquieta-González, Ernesto A., Reyes, Patrício, Oportus, Marcelo, Rangel, Maria do Carmo

“…The diffusion restrictions of the reactants caused by the micropores limit the use of zeolites for processing heavy molecules. This demands the development of…”
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Selective hydrogenation of furfural on Ir/TiO2 catalysts by Reyes, Patricio, Salinas, Daniela, Campos, Cristian, Oportus, Marcelo, Murcia, Julie, Rojas, Hugo, Borda, Gloria, Fierro, José Luís García

“…Titania-supported Ir catalysts were used in the hydrogenation of furfural. Reactions were carried out in a stirred batch type reactor at 0.62MPa and 363K using…”
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Hydrogenation of substituted aromatic nitrobenzenes over 1% 1.0 wt.%Ir/ZrO2 catalyst: Effect of meta position and catalytic performance by CAMPOS, Cristian, TORRES, Cecilia, OPORTUS, Marcelo, PENA, Miguel A, FIERRO, J. L. G, REYES, Patricio

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Nitrobenzene Hydrogenation on Au/TiO2 and Au/SiO2 Catalyst: Synthesis, Characterization and Catalytic Activity by Torres, Cecilia, Campos, Cristian, Fierro, José Luis García, Oportus, Marcelo, Reyes, Patricio

“…Recently, gold has been proposed as an active phase for the hydrogenation of nitro-arenes. This metal has been rarely used in hydrogenation reactions because…”
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Influence of Na content on the catalytic properties of Pt-Ir/Al2O3 catalysts for selective ring opening of decalin by Vicerich, María A., Oportus, Marcelo, Benitez, Viviana M., Reyes, Patricio, Pieck, Carlos L.

“…•The influence of Na doping of noble metal supported catalysts for SRO was studied.•Na has a strong influence on the acidity and metal properties of the…”
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Influence of Na content on the catalytic properties of Pt-Ir/Al sub(2)O sub(3) catalysts for selective ring opening of decalin by Vicerich, Maria A, Oportus, Marcelo, Benitez, Viviana M, Reyes, Patricio, Pieck, Carlos L

“…The influence of the Na addition on Pt-Ir/Al sub(2)O sub(3) on the reaction of selective ring opening of decalin and methyl cyclopentane was studied. The…”
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Preparation and characterization of Ru/MgO-Al2O3 catalysts for methane steam reforming by SANTOS CARVALHO, Luciene, MARTINS, André Rosa, REYES, Patricio, OPORTUS, Marcelo, ALBONOZ, Alberto, VICENTINI, Valéria, DO CARMO RANGEL, Maria

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Influence of Ge content on the activity of Ru–Ge–B/Al2O3 catalysts for selective hydrogenation of methyl oleate to oleyl alcohol by Sánchez, María A., Mazzieri, Vanina A., Oportus, Marcelo, Reyes, Patricio, Pieck, Carlos L.

“…•Selective hydrogenation of methyl oleate to oleyl alcohol on Ru–Ge–B/Al2O3 catalysts was studied.•Ge is deposited both over Ru metal sites and over the…”
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Influence of time and temperature on the regeneration of PtReIn/[Al.sub.2][O.sub.3] naphtha reforming catalysts by Vicerich, Maria A, Oportus, Marcelo, Benitez, Viviana M, Reyes, Fatricio, Fieck, Carlos L

“…The influence of temperature (450-500 °C) and time (1-4 h) of coke combustion on the catalytic properties of PtReIn/[Al.sub.2][O.sub.3] were studied. The…”
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Influence of Time and Temperature on the Regeneration of PtReIn/Al2O3 Naphtha Reforming Catalysts by Vicerich, María A., Oportus, Marcelo, Benitez, Viviana M., Reyes, Patricio, Pieck, Carlos L.

“…The influence of temperature (450–500 °C) and time (1–4 h) of coke combustion on the catalytic properties of PtReIn/Al 2 O 3 were studied. The results of the…”
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Hydrogenation of substituted aromatic nitrobenzenes over 1% 1.0wt.%Ir/ZrO2 catalyst: Effect of meta position and catalytic performance by Campos, Cristian, Torres, Cecilia, Oportus, Marcelo, Peña, Miguel A., Fierro, J.L.G., Reyes, Patricio

“…•Hydrogenation of substituted aromatic nitrobenzenes.•A 1%Ir/ZrO2 catalyst was prepared a traditional impregnation method using IrCl3precursor.•Effect of meta…”
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Nitrobenzene hydrogenation on Au/Ti[O.sub.2] and Au/Si[O.sub.2] catalyst: synthesis, characterization and catalytic activity by Torres, Cecilia, Campos, Cristian, Fierro, Jose Luis Garcia, Oportus, Marcelo, Reyes, Patricio

“…Recently, gold has been proposed as an active phase for the hydrogenation of nitro-arenes. This metal has been rarely used in hydrogenation reactions because…”
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Enantioselective hydrogenation of 1-phenyl-propane-1,2-dione on immobilised cinchonidine Pt/SiO2 catalysts by CAMPOS, Cristian H, OPORTUS, Marcelo, TORRES, Cecilia, URBINA, Claudia, FIERRO, José L. G, REYES, Patricio

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Enantioselective hydrogenation of 1-phenyl-propane-1,2-dione on immobilised cinchonidine Pt/SiO 2 catalysts by Campos, Cristian H., Oportus, Marcelo, Torres, Cecilia, Urbina, Claudia, Fierro, José L.G., Reyes, Patricio

“…[Display omitted] ► SiO 2 supports were synthesized by immobilised modified cinchonidine. ► Catalysts were prepared at 1% mass Pt supported on modified SiO 2…”
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Effect of iron on the properties of sulfated zirconia by Pereira, Amalia Luz Costa, Marchetti, Sergio Gustavo, Albornoz, Alberto, Reyes, Patrício, Oportus, Marcelo, Rangel, Maria do Carmo

“…The effect of iron on sulfated zirconia was studied in this work. When Fe/Zr ≤ 0.4 all iron ions go into zirconia but higher amounts (Fe/Zr ≥ 0.8) leads to…”
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Enantioselective hydrogenation of 1-phenyl-1,2-propanedione, ethyl pyruvate and acetophenone on Ir/SiO2 catalysts by Marzialetti, Teresita, Oportus, Marcelo, Ruiz, Doris, Fierro, José Luis García, Reyes, Patricio

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Preparation and characterization of Ru/MgO-Al 2O 3 catalysts for methane steam reforming by Carvalho, Luciene Santos, Martins, André Rosa, Reyes, Patrício, Oportus, Marcelo, Albonoz, Alberto, Vicentini, Valéria, Rangel, Maria do Carmo

“…The preparation and characterization of aluminum and magnesium oxides-supported ruthenium were described in this work, aiming to compare different supports to…”
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Enantioselective hydrogenation of 1-phenyl-1,2-propanedione, ethyl pyruvate and acetophenone on Ir/SiO 2 catalysts by Marzialetti, Teresita, Oportus, Marcelo, Ruiz, Doris, Fierro, José Luis García, Reyes, Patricio

“…The effect of the metal particle size and the modifier concentration on the enantioselectivity (ee) and the conversion level in the hydrogenation of three…”
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Efeito do cromo nas propriedades catalíticas da MCM-41 by Oliveira, Alcineia Conceição, Rangel, Maria do Carmo, Fierro, José Luís Garcia, Reyes, Patrício, Oportus, Marcelo

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Efeito do cromo nas propriedades catalíticas da MCM-41 The effect of chromium on the catalytic properties of MCM-41 by Alcineia Conceição Oliveira, Maria do Carmo Rangel, José Luís Garcia Fierro, Patrício Reyes, Marcelo Oportus

“…The effect of chromium on the catalytic properties of MCM-41 was evaluated in order to develop new catalysts for the trimethylbenzene transalkylation with…”
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