Search Results - "Velez, Alejandro Ramirez"

Numerical approximation to the scaling law describing the geometrical tortuosity in porous media by Alejandro Ramirez Velez

“…When studying porous media transport properties, it is crucial to ascertain tortuosity (τ) and its variation with porosity (???). In this work, numerical…”
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POLYMERIZATION OF ANILINE IN DIFFERENT SBA-16 SILICA HOSTS by Giraldo, Leidy Hoyos, Velez, Alejandro Ramirez, Cadavid, Monica Mesa

“…Polyaniline-silica composites made with mesoporous silica have been reported to improve the mechanical properties of the free polymer. However, there are not…”
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Synthesis of Oligophenylsiloxanes with Cross-Like Structures from Wollastonite by Jaramillo-Ruiz, Daniel Esteban, Ramirez-Velez, Alejandro

“…A new type of oligophenyl-siloxane was prepared by using a precursor and a route which are non-conventional. The synthesis iniciated with the obtention of…”
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Truncated pore network model for the methane and hydrogen adsorption in disordered nanoporous carbons by RAMIREZ VELEZ, Alejandro

“…► The model describes more appropriately the different structures present in real carbons. ► Omission of topological properties leads to an underestimation of…”
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SYNTHESIS AND CHARACTERIZATION OF MIXED OXIDES OF TITANIA-SILICA PREPARED BY SOL-GEL METHOD AND HOT WATER TREATMENT by Gelves, Elizabeth Pabon, Ordonez, Sandra Milena Borja, Loza, Javier Ordonez, Velez, Alejandro Ramirez

“…Mixed oxides SiO2-TiO2 were prepared of different compositions by the sol-gel method combined with hydrothermal treatment (HT), using tetraethylorthosilicate…”
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ADSORCIÓN DE METIL METACRILATO EN SÍLICES MESOPOROSAS TIPO SBA-15 Y SBA-16 Y PREPARACIÓN DEL HÍBRIDO PMMA/SBA-16 by GOMEZ, Lorena, PABON GELVES, Elizabeth, LUCY LOPEZ, Betty, RAMIREZ VELEZ, Alejandro

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SÍNTESIS Y CARACTERIZACIÓN DE ÓXIDOS MIXTOS DE SÍLICE-TITANIA PREPARADOS POR MÉTODO SOL-GEL Y TRATAMIENTO HIDROTÉRMICO by Gelves, Elizabeth Pabón, Ordóñez, Sandra Milena Borja, Loza, Javier Ordóñez, Vélez, Alejandro Ramírez

“…Prepararam-se óxidos mistos de SiO2-TiO2 de diferente composição pelo método sol-gel combinado com tratamento hidrotérmico (TH), utilizando como precursores…”
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Aproximación numérica a la ley de escalamiento que describe la tortuosidad geométrica en medios porosos desordenados by Ramírez Vélez, Alejandro

“…When studying porous media transport properties, it is crucial to ascertain tortuosity (τ) and its variation with porosity (??). In this work, numerical…”
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Adsorción de metil metacrilato en sílices mesoporosas tipo SBA15 Y SBA16 preparación del híbrido PMMA/SBA16 by Gómez Ortiz, Lorena, Pabón Gelves, Elizabeth, López Osorio, Betty Lucy, Ramírez Vélez, Alejandro

“…This work reports the synthesis of the polymethylmethacrylate (PMMA)/SBA16 mesoporous silica hybrid material. The methacrylic monomer is adsorbed by the silica…”
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Difusividad Efectiva de Ciclohexano en Pastillas de Sílice Sba-16 Obtenida por Espectroscopia de Infrarrojo con Transformada de Fourier (Ftir) by Castañeda, John Jairo, Pabón Gelves, Elizabeth, Ramírez Vélez, Alejandro

“…La utilización de sílices mesoporosas ordenadas en procesos de adsorción que involucran transporte difusivo de masa es un tema de interés. La sílice SBA-16 es…”
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ADSORCIÓN DE METIL METACRILATO EN SÍLICES MESOPOROSAS TIPO SBA-15 Y SBA-16 Y PREPARACIÓN DEL HÍBRIDO PMMA/SBA-16 by GÓMEZ, LORENA, PABÓN GÉLVES, ELIZABETH, LÓPEZ, BETTY LUCY, RAMÍREZ VÉLEZ, ALEJANDRO

“…En este trabajo se reporta la síntesis del material híbrido polimetilmetacrilato (PMMA)/sílice mesoporosa SBA-16. El monómero metacrílico es adsorbido por la…”
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SÍNTESIS Y CARACTERIZACIÓN DE ÓXIDOS MIXTOS DE SÍLICE-TITANIA PREPARADOS POR MÉTODO SOL-GEL Y TRATAMIENTO HIDROTÉRMICO by Elizabeth Pabón Gelves, Sandra Milena Borja Ordóñez, Javier Ordóñez Loza, Alejandro Ramírez Vélez

“…Se prepararon óxidos mixtos de SiO2-TiO2 de diferente composición por el método sol-gel combinado con tratamiento hidrotérmico (TH), utilizando como…”
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