Physical Inorganic Chemistry
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ChemInform Abstract: Investigation of the Reammoniation of Alumosilicate Catalysts by High Resolution 1H NMR.
First published: June 16, 1987
Abstract
It is demonstrated that different lines according to bridging OH-groups (Bronsted acid sites), non-acidic silanol groups, NH4+ ions and physisorbed NH3 can be resolved in the 1H MAS NMR spectra of HY- and H-ZSM-5 zeolites and amorphous alumosilicates after NH3 adsorption.
ChemInform Abstract
It is demonstrated that different lines according to bridging OH-groups (Bronsted acid sites), non-acidic silanol groups, NH4+ ions and physisorbed NH3 can be resolved in the 1H MAS NMR spectra of HY- and H-ZSM-5 zeolites and amorphous alumosilicates after NH3 adsorption. The amount of Bronsted acid sites can be determined quantitatively.
