Search Results - "Díaz, Yraida"

Dibenzothiophene Hydrodesulfurization Performance Over Hierarchically Porous NiMoS(Si,Zr)/Al2O3 Catalysts by Puello-Polo, Esneyder, Checca-Huaman, Noemi-Raquel, Toloza, Carlos A. T., Santolalla-Vargas, Carlos E., Díaz, Yraida, Fals, Jayson, Mendoza, Cesar D., Stand, Neileth, Márquez, Edgar, Albis Arrieta, Alberto R., Garcia-Macedo, Jorge A., Méndez, Franklin J.

“…The effects of the synthesis method, dopant nature, and porosity on the dibenzothiophene hydrodesulfurization performance of hierarchically porous…”
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Synthesis of La0.8Sr0.2FeO3 perovskites nanocrystals by Pechini sol–gel method by Del Toro, Raquel, Hernández, Petra, Díaz, Yraida, Brito, Joaquín L.

“…Pechini sol–gel method has been employed for the preparation of nanocrystalline La0.8Sr0.2FeO3 perovskite. The synthesis procedure was optimized by varying the…”
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Preparation of functionalized porous nano-γ-Al2O3 powders employing colophony extract by Sifontes, Ángela B., Gutierrez, Brenda, Mónaco, Andrea, Yanez, Andreina, Díaz, Yraida, Méndez, Franklin J., Llovera, Ligia, Cañizales, Edgar, Brito, Joaquín L.

“…This study reports the synthesis of porous nano alumina employing carboxylato-alumoxanes [Al(O) x (OH) y (O 2 CR) z ] n as precursors for controlling the pore…”
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MIBK from acetone on Pd/H-[Ga]ZSM5 catalysts: Effect of metal loading by Mediavilla, Marta, Melo, Luis, Díaz, Yraida, Albornoz, Alberto, Llanos, Aura, Brito, Joaquín L.

“…This work presents the preparation and characterization of three bifunctional catalysts consisting of palladium supported on H-[Ga]ZSM5 zeolite, with a Si/Ga…”
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Preparation and characterization of bifunctional catalysts of the Pd, Pt/H[Ga]MFI types by Melo, Luis, Díaz, Yraida, Mediavilla, Marta, Llanos, Aura, Albornoz, Alberto, Brito, Joaquín L.

“…An MFI type galosilicate was synthesized and characterized employing XRD, N 2 adsorption at −196 °C, chemical analysis by ICP-AES, and XPS. This material was…”
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Synthesis, characterization and hydrotreating activity of nanostructured systems on carbon supported vanadium by Pinto-Castilla, Susana, Marrero, Santiago, Díaz, Yraida, Brito, Joaquín L., Silva, Pedro, Betancourt, Paulino

“…A novel synthesis route was designed to obtain highly active vanadium based catalysts. Three different activated carbons were used as supports (one of them…”
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Influence of the acid sites density in the acetone transformation over bifunctional Pt/H[Ga]ZSM5 catalysts by Mediavilla, Marta, Melo, Luis, Díaz, Yraida, Brito, Joaquín L., Albornoz, Alberto, Solano, Roger

“…The purpose of this work is to elucidate the effect of acid sites density on the catalytic behaviour of a series of bifunctional catalysts prepared by…”
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Sintesis y caracterizacion de catalizadores de boruros de Ni y Co para su uso en las reacciones de hidrogenacion de ciclohexeno e hidrodesulfuracion de tiofeno by Linares, Carlos F, Reidtler, Yamaly, Mata, Jexsy, Ocanto, Freddy, Bretto, Pablo, Díaz, Yraida

“…Se sintetizaron catalizadores de boruros de Ni y Co con relación atómica Ni/(Ni+Co) igual a 1,00; 0,75; 0,50; 0,25 y 0,00 a partir de soluciones de sales de…”
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Mesoporous catalysts based on Keggin-type heteropolyacids supported on MCM-41 and their application in thiophene hydrodesulfurization by Méndez, Franklin J., Llanos, Aura, Echeverría, Marcel, Jáuregui, Reynaldo, Villasana, Yanet, Díaz, Yraida, Liendo-Polanco, Gustavo, Ramos-García, Miguel A., Zoltan, Tamara, Brito, Joaquín L.

“…[Display omitted] ► Supporting the heteropolyacids increased the catalytic activities. ► Surface acidity and calcination temperature related to HDS activity…”
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Dibenzothiophene Hydrodesulfurization Performance Over Hierarchically Porous NiMoS(Si,Zr)/Al 2 O 3 Catalysts by Puello-Polo, Esneyder, Checca-Huaman, Noemi-Raquel, Toloza, Carlos A. T., Santolalla-Vargas, Carlos E., Díaz, Yraida, Fals, Jayson, Mendoza, Cesar D., Stand, Neileth, Márquez, Edgar, Albis Arrieta, Alberto R., Garcia-Macedo, Jorge A., Méndez, Franklin J.

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MCM-41-supported vanadium catalysts structurally modified with Al or Zr for thiophene hydrodesulfurization by Escalante, Yelisbeth, Méndez, Franklin J., Díaz, Yraida, Inojosa, Marcel, Morgado, Myloa, Delgado, Miguel, Bastardo-González, Ernesto, Brito, Joaquín L.

“…Vanadium catalysts supported on Al(Zr)-MCM-41-type materials were prepared by impregnation. Textural and structural properties, elemental composition and…”
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Template synthesis and characterization of mesoporous γ-Al2O3 hollow nanorods using Stevia rebaudiana leaf aqueous extract by Rodríguez, Mirla, Sifontes, Ángela B., Méndez, Franklin J., Díaz, Yraida, Cañizales, Edgar, Brito, Joaquín L.

“…Mesoporous γ-Al2O3 hollow nanorods have been synthesized using aluminum isopropoxide as Al source and Stevia rebaudiana leaf extract (a complex mixture of…”
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Effect of the supported Pt on the migration of structural Ga toward the surface of catalysts of the Pt/H[Ga]ZSM5 type by MELO, Luis, DIAZ, Yraida, MEDIAVILLA, Marta, ALBORNOZ, Alberto, BRITO, Joaquin L

“…The aim of this work is to find out how platinum supported over a gallosilicate of the MFI type influences the removal of Ga from the framework and affects the…”
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Preparation of functionalized porous nano-γ-Al 2 O 3 powders employing colophony extract by Sifontes, Ángela B, Gutierrez, Brenda, Mónaco, Andrea, Yanez, Andreina, Díaz, Yraida, Méndez, Franklin J, Llovera, Ligia, Cañizales, Edgar, Brito, Joaquín L

“…This study reports the synthesis of porous nano alumina employing carboxylato-alumoxanes [Al(O) (OH) (O CR) ] as precursors for controlling the pore size, pore…”
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Remoción de plomo en soluciones acuosas empleando nanoaluminofosfatos amorfos by Rondón, Wendy, Sifontes, Ángela B., Freire, David, Quintal, Manuelita, Cañizales, Edgar, Méndez, Franklin J., Llovera, Ligia, Diaz, Yraida, Brito, Joaquin L.

“…Se emplearon nanopartículas de aluminofosfatos amorfos entre 23 a 30 nm de diámetro para la adsorción de iones plomo (Pb2+) en soluciones acuosas. Los…”
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Preparation and characterization of bifunctional Pt-Sn/H[Al]ZSM5 catalysts by MORALES, Ricardo, MELO, Luis, LLANOS, Aura, BRITO, Joaquin, DIAZ, Yraida, ALBORNOZ, Luis, MORONTA, Delfin

“…Bifunctional monometallic Pt/H[Al]ZSM5, Sn/H[Al]ZSM5 and bimetallic Pt-Sn/H[Al]ZSM5 (tin atomic fraction, XSn, of 0.46) catalysts were prepared and…”
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Effect of the structural modification by carbiding of alumina supported Anderson-type (NH4)4[NiMo6−xWxO24H6]·5H2O on hydrodesulfurization, hydrodechlorination and selective oxidation by Puello-Polo, Esneyder, Diaz, Yraida, Brito, Joaquín L.

“…The γ-Al2O3-supported Anderson-type complexes (NH4)4[NiMo6−xWxO24H6]·5H2O (x=0, 3 or 6) were carburized with CH4/H2 (1:4) mixture (denoted by NiMo6−xWx-C/Al)…”
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Synthesis of SrFe(Al)O3−δ–SrAl2O4 nanocomposites via green route by Del Toro, Raquel S., Pinto-Castilla, Susana, Cañizales, Edgar, Ávila, Edward, Díaz, Yraida, Gutiérrez, Brenda, Sifontes, Ángela B.

“…A ceramic nanocomposite of SrFe(Al)O3−δ and Sr3Al2O6 was obtained using the controlled combustion of a previously synthesized chitosan-Sr-Fe-Al precursor. The…”
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Synthesis of SrFe(Al)O 3 − δ –SrAl2O4 nanocomposites via green route by Del Toro, Raquel S., Pinto-Castilla, Susana, Cañizales, Edgar, Ávila, Edward, Díaz, Yraida, Gutiérrez, Brenda, Sifontes, Ángela B.

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Metallic monoliths of AISI 304 stainless steel, aluminum, FeCrAlloy registered and brass, coated by Mo and W oxides for thiophene hydrodesulfurization by Diaz, Yraida, Sevilla, Adriana, Monaco, Andrea, Mendez, Franklin J, Rosales, Pedro, Garcia, Luis, Brito, Joaquin L

“…Metal sheets of AISI 304 stainless steel (SS), aluminum (Al), FeCrAlloy registered (FA) and brass (B) were employed in the manufacture of metallic monoliths to…”
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