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Química Nova

On-line version ISSN 1678-7064

Abstract

PERGHER, Sibele B. C.; CORMA, Avelino  and  FORNES, Vicente. Preparation and characterization of MCM-22 zeolite and its layered precursor. Quím. Nova [online]. 2003, vol.26, n.6, pp. 795-802. ISSN 1678-7064.  http://dx.doi.org/10.1590/S0100-40422003000600003.

The layered precursor of MCM-22 was prepared with different Si/Al ratios: 15, 25, 50, 100 and ¥. Upon heat treatment these precursors form MCM-22 zeolite. Both layered precursor and MCM-22 zeolite were characterized by several techniques: Chemical Analysis by Atomic Absorption Spectroscopy (AAS), X-Ray Diffraction (XRD), Thermo-gravimetric Analysis (TGA), Pore Analysis by N2 and Ar adsorption, Scanning Electron Microscopy (SEM), Infrared Spectroscopy (IR) and Temperature Programmed Desorption of ammonium (TPD).

Keywords : MCM-22; layered precursor; zeolites.

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