EFFECT OF OH- AL RATIO OF PILLARING SOLUTION ON THE TEXTURE AND SURFACE-ACIDITY OF ALUMINUM PILLARED CLAYS/

Authors
KUMAR P JASRA RV BHAT SGT
Citation
P. Kumar et al., EFFECT OF OH- AL RATIO OF PILLARING SOLUTION ON THE TEXTURE AND SURFACE-ACIDITY OF ALUMINUM PILLARED CLAYS/, Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 36(8), 1997, pp. 667-671
Citations number
17
Categorie Soggetti
Chemistry
Journal title
Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical → ACNP
ISSN journal
03764710
Volume
36
Issue
8
Year of publication
1997
Pages
667 - 671
Database
ISI
SICI code
0376-4710(1997)36:8<667:EOOARO>2.0.ZU;2-S
Abstract
A few alumina pillared montmorillonite clay samples have been prepared by varying OH-/Al ratio of the crosslinking solution in the range of 1.5 to 1.9. Variations in OH-/Al ratio of crosslinking solution has le d to the different adsorption capacities of the pillared clays for nit rogen, water, benzene and pyridine adsorption isotherms. Pillared clay intercalated with crosslinking solution with OH-/Al ratio of 1.7 show s highest adsorption capacity for water, benzene and pyridine. The nit rogen adsorption isotherms are of type-I indicating microporosity. Inf rared spectra of pyridine adsorbed samples show that pillaring generat es Lewis as well Bronsted type of acidity in the clays. After pillarin g the number of accessible protons available on the surface of the cla y is increased as compared to that in unpillared clay.