Hydrogenation of tetralin over Ir supported on titania-modified SBA-16.

BRENDA LEDESMA; VERÓNICA VALLÉS; LORENA RIVOIRA; MARIA VIRGINIA PONTE; OSCAR ANUNZIATA; ANDREA BELTRAMONE

Congreso; XXIV Congreso Iberoamericano de Catálisis; 2014

A series of Ti modified SBA-16 supports and their respective Ir-catalysts were prepared and characterized to study the effect of support preparation method on the dispersion of iridium and on the characteristics of Ir surface species. Two methods of incorporation of titania were tested: the sol-gel method in order to obtain Ti as heteroatom and incipient wetness impregnation to obtain Ti as TiO2 (anatase phase). The final catalyst was characterized at different stage of preparation by XRD, elemental analysis and BET. The presence of Ti as Ti+4 in the nanostructure of SBA and as TiO2 (anatase phase) was analyzed by UV-vis-DRS and Raman spectroscopy. The catalysts synthesized by us had good activity measured in tetralin hydrogenation at mild conditions. The experimental data was quantitatively represented by a pseudo first order rate equation. The preliminary results show these materials as promising catalysts for HDT reactions.