Search Results - "Sifontes, Ángela B"

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…”
Get full text

Microstructural study of FeMo/MgO catalysts prepared by sol–gel and co–impregnation and their relationship with the growth of carbon nanotubes by Rojas-Challa, Yahsé, Méndez, Franklin J., Brito, Joaquín L., González, Gema, Sifontes, Ángela B., González, Oscar, de Astudillo, Luisa Rojas

“…Multiwall carbon nanotubes (MWCNTs) were synthesized using p-xylene and FeMo/MgO catalysts prepared by two methods (co-impregnation and sol–gel). Carbon…”
Get full text

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…”
Get full text

Biosynthesis of amorphous mesoporous aluminophosphates using yeast cells as templates by Sifontes, Ángela B., González, Gema, Tovar, Leidy M., Méndez, Franklin J., Gomes, Maria E., Cañizales, Edgar, Niño-Vega, Gustavo, Villalobos, Hector, Brito, Joaquin L.

“…[Display omitted] ► Amorphous aluminophosphates can take place using yeast as template. ► A mesoporous material was obtained. ► The specific surface area after…”
Get full text

Chitosan templated synthesis of strontium–iron–oxygen nanocrystalline system by Sifontes, Ángela B., Del Toro, Raquel S., Ávila, Edward, Cañizales, Edgar, Lovera, Giojanny, Cubillán, Liz, González, Verónica, Mónaco, Andrea, Brito, Joaquín L.

“…A mixture of ferrites phases containing strontium ortho/hexagonal ferrites was synthesized using chitosan as template and heat treatments. The analysis by XRD,…”
Get full text

Biosíntesis de nanomateriales: hacia el avance de la nanotecnología verde by Ángela B. Sifontes

“…RESUMEN: La creciente necesidad de desarrollar tecnologías ambientalmente amigables para las síntesis de nanomateriales ha dado lugar a un beneficioso proceso…”
Get full text

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…”
Get full text

Microwave-assisted polyol synthesis of Pt/H-ZSM5 catalysts by Mediavilla, Marta, Morales, Husley, Melo, Luis, Sifontes, Angela B., Albornoz, Alberto, Llanos, Aura, Moronta, Delfin, Solano, Roger, Brito, Joaquín L.

“…Three H-ZSM5 solids with Si/Al atomic ratios of 22, 71 and 96 were synthesized and characterized by X-ray diffraction (XRD), ICP-AES chemical analysis and…”
Get full text

Preparation of γ-alumina ceramic foams employing hydrophilated polyester polyurethane sponges by Sifontes, Angela B., Urbina, Marianis, Fajardo, Frank, Melo, Luis, Mediavilla, Marta, Carrión, Nereida, Brito, Joaquín L.

Get full text

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…”
Get full text

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, Joaquín L.

Get full text

Preparación de nanopartículas de plata en ausencia de polimeros estabilizantes by Sifontes, Ángela B., Melo, Luis, Maza, Carlos, Mendes, Juan J., Mediavilla, Marta, Brito, Joaquín L., Zoltan, Tamara, Albornoz, Alberto

Get full text

Preparación de nanopartículas de plata en ausencia de polimeros estabilizantes Preparation of silver nanoparticles in the absence of polymer stabilizers by Ángela B. Sifontes, Luis Melo, Carlos Maza, Juan J. Mendes, Marta Mediavilla, Joaquín L. Brito, Tamara Zoltan, Alberto Albornoz

“…Silver nanoparticles (AgNPs) were prepared by means of the polyol method in the absence of stabilizing polymers. To accomplish this objective, AgNO3 was added…”
Get full text

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…”
Get full text

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.

Get full text

Remoción de plomo en soluciones acuosas empleando nanoaluminofosfatos amorfos/Remoção de chumbo em soluções aquosas usando nanoaluminofosfatos amorfos by Rondón, Wendy, Sifontes, Ángela B, Freire, David, Quintal, Manuelita, Cañizales, Edgar, Méndez, Franklin J, Llovera, Ligia, Diaz, Yraida, Brito, Joaquin L

“…Amorphous aluminophosphates nanoparticles with diameter sizes from 23 to 30 nm were used for the adsorption of lead ions (Pb^sup 2+^) in aqueous solutions. The…”
Get full text

Preparation of g-alumina ceramic foams employing hydrophilated polyester polyurethane sponges by Sifontes, Angela B, Urbina, Marianis, Fajardo, Frank, Melo, Luis, Mediavilla, Marta, Carrion, Nereida, Brito, Joaquin L

Get full text

Removal of lead in aqueous solutions using amorphous nanoaluminophosphates by Rondon, Wendy, Sifontes, Angela B, Freire, David, Quintal, Manuelita, Canizales, Edgar, Mendez, Franklin J, Llovera, Ligia, Diaz, Yraida, Brito, Joaquin L

“…Amorphous aluminophosphates nanoparticles with diameter sizes from 23 to 30 nm were used for the adsorption of lead ions (Pb super( 2+)) in aqueous solutions…”
Get full text