Zobrazeno 1 - 10
of 22
pro vyhledávání: '"ÁNGELA B. SIFONTES"'
Autor:
Wendy Rondón, Ángela B. Sifontes, David Freire, Manuelita Quintal, Edgar Cañizales, Franklin J. Méndez, Ligia Llovera, Yraida Diaz, Joaquin L. Brito
Publikováno v:
Revista Ambiente & Água, Vol 10, Iss 1, Pp 59-70 (2015)
Se emplearon nanopartículas de aluminofosfatos amorfos entre 23 a 30 nm de diámetro para la adsorción de iones plomo (Pb2+) en soluciones acuosas. Los materiales fueron sintetizados mediante biosíntesis utilizando como plantillas biológicas las
Externí odkaz:
https://doaj.org/article/3fae645db66e4311951df14762b86b43
Autor:
Ángela B. Sifontes, Brenda Gutierrez, Andrea Mónaco, Andreina Yanez, Yraida Díaz, Franklin J. Méndez, Ligia Llovera, Edgar Cañizales, Joaquín L. Brito
Publikováno v:
Biotechnology Reports, Vol 4, Iss C, Pp 21-29 (2014)
This study reports the synthesis of porous nano alumina employing carboxylato-alumoxanes [Al(O)x(OH)y(O2CR)z]n as precursors for controlling the pore size, pore size distribution and porosity of the alumina, using a new process ecofriendly. The carbo
Externí odkaz:
https://doaj.org/article/fb1667dd9bf545429660acb2c146b2cd
Autor:
Ángela B. Sifontes, Luis Melo, Carlos Maza, Juan J. Mendes, Marta Mediavilla, Joaquín L. Brito, Tamara Zoltan, Alberto Albornoz
Publikováno v:
Química Nova, Vol 33, Iss 6, Pp 1266-1269 (2010)
Silver nanoparticles (AgNPs) were prepared by means of the polyol method in the absence of stabilizing polymers. To accomplish this objective, AgNO3 was added to ethylene glycol in the presence of NaOH (1 mol.L-1), the suspension formed was irradiate
Externí odkaz:
https://doaj.org/article/9931e5692a534a69961ce63b518739c2
Autor:
Andrea Mónaco, Ligia Llovera, Ángela B. Sifontes, Brenda Gutiérrez, Yraida Díaz, Mine Rengifo, Edward E. Ávila
Publikováno v:
Biotechnology Research & Innovation, Vol 3, Iss 1, Pp 22-37 (2019)
This research paper comparison of the use of biological templates obtained from steviol glycosides and glucose (monosaccharide) directed toward the synthesis of metal oxides. The results obtained shown the synthesis of aluminum oxides in an aqueous m
Autor:
FRANKLIN J. MÉNDEZ, YANET VILLASANA, JULIA GUERRA, ÁNGELA B. SIFONTES, CLAUDIO OLIVERA-FUENTES, JOAQUÍN L. BRITO
Se hace una revisión sobre el estado del arte de la catálisis involucrada en la reacción de hidrogenación selectiva de 1,3-butadieno en cortes ricos en 1-buteno con catalizadores basados en Pd/Al2O3. Se presentan algunos aspectos relevantes de es
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a80795be9a53871fc6a09a3e0d1cd4e
Autor:
Andrea Mónaco, Giojanny Lovera, Verónica González, Edgar Cañizales, Raquel del Toro, Liz Cubillán, Joaquín L Brito, Ángela B. Sifontes, Edward E. Ávila
Publikováno v:
Ceramics International. 41:13250-13256
A mixture of ferrites phases containing strontium ortho/hexagonal ferrites was synthesized using chitosan as template and heat treatments. The analysis by XRD, FTIR, SEM, TEM and HRTEM showed the coexistence of the perovskite-like SrFeO 2.9 and hexaf
Autor:
Yahsé Rojas-Challa, Franklin J. Méndez, Gema González, Luisa Rojas de Astudillo, Joaquín L Brito, Ángela B. Sifontes, Oscar González
Publikováno v:
Diamond and Related Materials. 60:35-41
Multiwall carbon nanotubes (MWCNTs) were synthesized using p-xylene and FeMo/MgO catalysts prepared by two methods (co-impregnation and sol–gel). Carbon nanotubes with uniform diameters were obtained by catalytic chemical vapor deposition at 900 °
Autor:
Yraida Díaz, Raquel del Toro, Brenda Gutiérrez, Edward E. Ávila, Edgar Cañizales, Ángela B. Sifontes, Susana Pinto-Castilla
Publikováno v:
Nano-Structures & Nano-Objects. 22:100437
A ceramic nanocomposite of SrFe(Al)O 3 − δ and Sr3Al2O6 was obtained using the controlled combustion of a previously synthesized chitosan-Sr-Fe-Al precursor. The complex formed by chitosan and metal ions in the organometallic precursor was confirm
Autor:
Ligia Llovera, Wendy Rondón, Yraida Díaz, Manuelita Quintal, Joaquín L Brito, Ángela B. Sifontes, David Freire, Edgar Cañizales, Franklin J. Méndez
Publikováno v:
Revista Ambiente & Água, Vol 10, Iss 1, Pp 59-70 (2015)
Revista Ambiente & Água v.10 n.1 2015
Revista Ambiente & Água
Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)
instacron:IPABHI
Revista Ambiente & Água v.10 n.1 2015
Revista Ambiente & Água
Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)
instacron:IPABHI
Se emplearon nanopartículas de aluminofosfatos amorfos entre 23 a 30 nm de diámetro para la adsorción de iones plomo (Pb2+) en soluciones acuosas. Los materiales fueron sintetizados mediante biosíntesis utilizando como plantillas biológicas las
Autor:
Brenda Gutiérrez, Joaquín L Brito, Ángela B. Sifontes, Yraida Díaz, Franklin J. Méndez, Ligia Llovera, Edgar Cañizales, Andreina Yanez, Andrea Mónaco
Publikováno v:
Biotechnology Reports, Vol 4, Iss C, Pp 21-29 (2014)
Biotechnology Reports
Biotechnology Reports
Graphical abstract
This study reports the synthesis of porous nano alumina employing carboxylato-alumoxanes [Al(O)x(OH)y(O2CR)z]n as precursors for controlling the pore size, pore size distribution and porosity of the alumina, using a new proces
This study reports the synthesis of porous nano alumina employing carboxylato-alumoxanes [Al(O)x(OH)y(O2CR)z]n as precursors for controlling the pore size, pore size distribution and porosity of the alumina, using a new proces