ISSN:
1573-4854
Keywords:
mesoporous silica
;
temperature-programmed desorption
;
N2 desorption
;
mesopores
;
pore-size distribution
;
thermal gravimetric analysis
;
mesoporous molecular sieves
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Two mesoporous silica molecular sieves, one synthesized by cationic template method and another by neutral template route, were characterized for their pore-size distribution by a novel Temperature-Programmed Desorption (TPD) method and the widely used N2 desorption method. The pore-size distributions determined by the two methods agree quite well and are within experimental errors. For example, TPD method gave a pore size distribution (radius) centered at 14 Å while N2 desorption method showed a peak centered at 13.3 Å. for the mesoporous silica prepared by cationic template route. The new TPD method based on thermogravimetric analysis is a viable option for mesopore characterization of silica-based materials.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01186041
Permalink
