Abstract

CISNEROS, Vanessa; OCANTO, Freddy  and  LINARES, Carlos F.. Ca²⁺, Mg²⁺ OR Fe²⁺ ion-exchanged cancrinite-type zeolites as possible hypoglycemiant agents. Rev. latinoam. quím [online]. 2011, vol.39, n.1-2, pp.55-61. ISSN 0370-5943.

A nitrate-sodium cancrinite-type zeolite was synthesized and exchanged with calcium (II), magnesium (II) and iron (II) cations. These exchanged zeolites were previously characterized by XRD, BET specific surface area, chemical analysis and FT-IR. XRD confirmed only the presence of the cancrinite phase. Other phases, such as sodalite, were not identified. Different amounts of these ion-exchanged zeolites were put in contact with a glucose solution during variable time. Results showed that these ion-exchanged cancrinites were active for the glucose adsorption, especially those exchanged with Fe; while the Ca²⁺, Mg²⁺ and Na⁺ cancrinites displayed an adsorption capacity much lower than the Fe²⁺ cancrinite. Moreover, the kinetic studies showed that the glucose adsorption capacity by using these modified cancrinites, it is affected by the glucose concentration in the reaction medium.

Keywords : cancrinite; hypoglycemiant agents; diabetes; cationic exchange.