INVESTIGADORES
NAZZARRO Marcelo Sandro
artículos
Título:
Effect of hydrothermal treatmenton Cr-SiO2 mesoporous materials
Autor/es:
PABLO M.CUESTA ZAPATA; M. S. NAZZARRO; MÓNICA L. PARENTIS; ELIO E.GONZO; NORBERTO A.BONINI
Revista:
CHEMICAL ENGINEERING SCIENCE
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 101 p. 374 - 381
ISSN:
0009-2509
Resumen:
Cr/SiO2 mesoporous (MCM-41) materials were prepared by hydrolysis of tetraethylortosilicate (TEOS) in the presence of cetyltrimetyl ammonium bromide as template, by the sol-gel method. After TEOS hydrolysis, the gel was treated under hydrothermal conditions between 120°C and 220°C. The solids obtained were characterized by N2 sortometry, DRUV-Vis, DRX, FTIR and XPS. The surface acidity was determined by 2-propanol dehydration reaction. The hydro treatment produces the Cr+3 to be incorporated into the SiO2 structure.
