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Recent advances in processing and characterization of periodic mesoporous mcm-41 silicate molecular sieves

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Title Recent advances in processing and characterization of periodic mesoporous mcm-41 silicate molecular sieves
 
Creator SELVAM, P
BHATIA, SK
SONWANE, CG
 
Subject x-ray-diffraction
pore-size distributions
highly ordered mcm-41
liquid-crystalline phases
anion-exchange properties
hydrothermal stability
capillary condensation
nitrogen adsorption
water-vapor
structural-properties
 
Description The discovery of periodic mesoporous MCM-41 and related molecular sieves has attracted significant attention from a fundamental as well as applied perspective. They possess well-defined cylindrical/hexagonal mesopores with a simple geometry, tailored pore size, and reproducible surface properties. Hence, there is an ever-growing scientific interest in the challenges posed by their processing and characterization and by the refinement of various sorption models. Further, MCM-41-based materials are currently under intense investigation with respect to their utility as adsorbents, catalysts, supports, ion-exchangers, and molecular hosts. In this article, we provide a critical review of the developments in these areas with particular emphasis on adsorption characteristics, progress in controlling the pore sizes, and a comparison of pore size distributions using traditional and newer models. The model proposed by the authors for adsorption isotherms and criticalities in capillary condensation and hysteresis is found to explain unusual adsorption behavior in these materials while providing a convenient characterization tool.
 
Publisher AMER CHEMICAL SOC
 
Date 2011-10-15T09:13:07Z
2011-12-15T09:16:25Z
2011-10-15T09:13:07Z
2011-12-15T09:16:25Z
2001
 
Type Review
 
Identifier INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,40(15)3237-3261
0888-5885
http://dx.doi.org/10.1021/ie0010666
http://dspace.library.iitb.ac.in/xmlui/handle/10054/13966
http://hdl.handle.net/100/3158
 
Language en