http://revistas.ucr.ac.cr/index.php/ingenieriaRevista Ingeniería ISSN Impreso: 1409-2441 ISSN electrónico: 2215-2652

Effect of Preparation Method on Catalytic Activity of Ni/ γ-Al2O3 Catalysts

Bárbara Cristina Miranda Morales



DOI: http://dx.doi.org/10.15517/jte.v27i1.23189

Resumen


The performance of catalysts has been shown to be strongly dependent on their methods of preparation.  A study to examine the relationship between catalyst preparation procedures and the structure, dispersion, activity, and selectivity of the finished catalyst is reported. 10 wt.% Ni/γ-Al2O3 catalysts were prepared by incipient wetness impregnation and by wet impregnation. The catalysts were used in the conversion of glycerol in gas phase and atmospheric pressure. The selectivity and activity of the catalysts were affected by the preparation method employed. The catalysts were characterized by TGA, TPR, N2-physorption, H2-chemisorption, XRD, TEM, FTIR and TPO. The Ni particle size and dispersion of the catalysts affected the selectivity to hydrogenolysis and dehydration routes, and the formation of carbon deposits was also affected.


Palabras clave


catalyst, preparation, nickel, hydrogenolysis, dehydration, glycerol

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