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Revista Facultad de Ingeniería Universidad de Antioquia

Print version ISSN 0120-6230

Abstract

MACIAS LOPEZ, Mario Alberto; HENAO MARTINEZ, José Antonio  and  RIOS REYES, Carlos Alberto. Structural analysis of the natural clinker-based analcime (NC-ANA) by X-ray powder diffraction and solid-state 29Si and 27al nuclear magnetic resonance spectroscopy. Rev.fac.ing.univ. Antioquia [online]. 2011, n.61, pp.9-18. ISSN 0120-6230.

The natural clinker-based analcime (NC-ANA) framework was synthesized by the conventional hydrothermal alkaline activation method. The synthesized zeotype was characterized by X-ray powder diffraction (XRPD) analysis and solid-state 29Si and 27Al nuclear magnetic resonance (NMR) spectroscopy. XRPD data indicate that the NC-ANA zeotype framework crystallized in the rhombohedral space group R-3, with unit cell parameters a = 11,8995(6) Ǻ, α = 109,472(2)°, V = 1.300,69(1) Ǻ3, Z = 8. 29Si NMR data reveal a number of resonance lines, with a full width at half height typically less than 2 ppm. The attribution of NMR lines to Qn groups was done by considering the stoichiometry and crystallographic data of the NC-ANA.

Keywords : Analcime; framework; natural clinker; Rieltveld method; NMR spectroscopy.

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