Factores que afectan la textura y estructura de Ti(R)-MCM-41

Content Provider	Semantic Scholar
Author	Rosales, José Merced Martínez Berestneva, Tatiana Klimova Solís, Jorge Ramírez
Copyright Year	2001
Abstract	Studied was the effect surfactant removal and titanium content have on the structure and textural properties of Ti-MCM-41 mesoporous materials. The synthesized solids were characterized by N 2 adsorption, X-ray fluorescence (FRX), X-ray diffraction (DRX), electronic microscopy of high resolution (HREM), and FT-Raman and UV-vis diffuse reflectance spectroscopy (DRS). Between the two methods of surfactant removal studied, the application of a polar solvent (solution of 0.05 M H 2 SO 4 in ethanol) was to be more effective in removing the surfactant and diminishing the destruction of mesoporous material during calcination. The samples treated by this method showed a more ordered hexagonal pore arrangement (HREM, XRD) and larger surface area. The effect of an increase in TiO 2 content in synthesized solids translates itself into a significant decrease of the peak intensity characteristic of TiMCM-41 (2Θ = 2.2-2.5 o ) and textural properties (S BET pore volume), which indicates that during the synthesis it is not possible to incorporate more than 10 mol. % of TiO 2 into the MCM-41 framework.
Starting Page	12
Ending Page	18
Page Count	7
File Format	PDF HTM / HTML
DOI	10.15174/au.2001.306
Alternate Webpage(s)	http://www.actauniversitaria.ugto.mx/index.php/acta/article/download/306/285
Alternate Webpage(s)	https://doi.org/10.15174/au.2001.306
Volume Number	11
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article