Escudo Universidad de Antioquia

Sistema de Bibliotecas

Universidad de Antioquia

Repositorio Institucional UdeA


Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10495/9797
Título : Characterization of Sn- and Zn-loaded MCM-41 catalysts for nopol synthesis
Autor : Alarcón Durango, Edwin Alexis
Villa Holguín, Aída Luz
Montes de Correa, Consuelo
Palabras clave : Catalizadores
Catalysts
Vapor
Steam
Síntesis de nopol
Fecha de publicación : 2009
Editorial : Elsevier
Citación : Alarcón Durango, E. A., Villa, A. L., & Montes de Correa, C. (2009). Characterization of Sn- and Zn-loaded MCM-41 catalysts for nopol synthesis. Microporous And Mesoporous Materials. 122(1-3), 208-215
Abstract : Several heterogeneous catalysts based on MCM-41 were synthesized either by chemical vapor deposition (CVD) or hydrothermally, i.e. adding SnCl4, SnCl2 or ZnCl2 as precursor salts into the MCM-41 synthesis gel. Synthesized materials were characterized by XRD, BET surface area, atomic absorption, UV–Vis, H2- TPR, NH3-TPD, TEM and pyridine-FTIR. Better textural properties and more reactive materials were obtained using tin salt precursors compared with ZnCl2. UV–Vis and TPR analyses of selected Sn–MCM-41 materials indicate that depending on the synthesis and pretreatment conditions several species may be formed: Sn4+ as Lewis acid sites of different coordination, SnO2 nanoparticles and bulk tin oxide species. The presence of SnO2 nanoparticles was also confirmed by TEM. Medium strength Lewis acid sites appear to increase nopol selectivity. Hydroxylated groups, i.e. Sn–OH, increased the weak acid sites and diminished nopol selectivity.
Grupo de INV. : Catálisis Ambiental
URI : http://hdl.handle.net/10495/9797
ISSN : 1387-1811
Aparece en las colecciones: CIA (Centro de Investigaciones Ambientales y de Ingeniería)

Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
AlarconEdwin_2009_CharacterizationCatalystsNopol.pdfArtículo de Revista763,41 kBAdobe PDFVisualizar/Abrir


Este ítem está sujeto a una licencia Creative Commons Licencia Creative Commons Creative Commons

 


Unidad de Gestión Tecnológica /Sistema de Bibliotecas / Universidad de Antioquia / Cl. 67 Nº 53 - 108 - Bloque 8 Conmutador: 219 51 51- 219 51 40 comunicacionessistemadebibliotecas@udea.edu.co Medellín - Colombia