Synthesis of a Structured Material Based on Compact Spheres Coated with Zn or Mg Spinel

Sonia Bocanegra, Adriana Ballarini, Osvaldo Scelza, Sergio de Miguel
2015 Procedia Materials Science  
In this work, a synthesis method of coating with thin layers of MgAl 2 O 4 or ZnAl 2 O 4 over -Al 2 O 3 spheres were developed. The method consisted in the deposition of a primer of bohemite on the spheres, followed by the impregnation with a solution of Mg or Zn nitrates, and further thermal treatments in order to obtain MAl 2 O 4 (M: Mg or Zn). This method was modified to improve the thickness and purity of the layer material. With this method, layers of uniform and adequate thickness and
more » ... adhesion were achieved. Pt catalysts prepared with these materials as supports displayed good catalytic performances in the nbutane dehydrogenation reaction, especially those obtained with purified supports.
doi:10.1016/j.mspro.2015.04.009 fatcat:yikczrlucvewdijrbqtw2sijpy