Preparation and characterization of magnetic composites based on a natural zeolite - GutiéRrez, Marlen (Center for the Development of Nanoscience and Nanotechnology. CEDENNA) ; Escudey, Mauricio (Center for the Development of Nanoscience and Nanotechnology. CEDENNA) ; Escrig, Juan (Center for the Development of Nanoscience and Nanotechnology. CEDENNA) ; Denardin, Juliano C. (Center for the Development of Nanoscience and Nanotechnology. CEDENNA) ; Altbir, Dora (Center for the Development of Nanoscience and Nanotechnology. CEDENNA) ; Fabris, Jose D. (Universidade Federal de Minas Gerais. Departmento de Química) ; Cavalcante, Luis C. D. (Universidade Federal de Minas Gerais. Departmento de Química) ; García-GonzáLez, María Teresa (Consejo Superior de Investigaciones Científicas (Espanya). Instituto de Ciencias Agrarias)