Structural analysis of the JBW obtido a partir de argila rica em caulinita

The JBW zeolite was prepared from hydrogels under hydrothermal conditions by alkaline reaction, using NaOH as activating agent. The synthetic zeotype was studied by analytical techniques such as X-ray powder diffraction, scanning electron microscopy, Fourier transformed infrared spectroscopy and solid-state [sup.29]Si and [sup.27]Al Magic angle spinning nuclear magnetic resonance. Crystallographic data revealed that the JBW structure can be described by the orthorhombic space group [Pna2.sub.1], with unit cell parameters a=16.409(2) [Angstrom], b=14.966(2) [Angstrom] and c=5.2154(5) [Angstrom].