Abstract

BASSM, R et al. SUPPORT EFFECT ON CONVERSION OF QUINOLINE OVER ReS₂ CATALYST. J. Chil. Chem. Soc. [online]. 2016, vol.61, n.4, pp.3170-3176. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072016000400004.

The conversion of quinoline over ReS₂ supported on y-Al₂O₃, SiO₂, ZrO₂ and TiO₂ catalysts in a batch reactor at 300^oC and 5 MPa of hydrogen pressure was studied. The catalysts were prepared by wet impregnation with a loading of 1.5 atoms of Re per nm² of support. The catalysts were characterized by N₂ adsorption, X-ray photoelectron spectroscopy (XPS) and X-ray powder diffraction (XRD). The Re(x)/supports catalysts displayed high activities for the conversion of quinoline, although negligible formation of N-free compounds (hydrodenitrogenation) were observed. The intrinsic activities of ReS₂ were modified by the support decreased in the order: Re/TiO₂ > Re/ZrO₂ > Re/SiO₂ > Re/y-Al₂O₃. The highest activity displayed by the Re/TiO₂ catalyst was correlated with the Re dispersion and formation of ReS₂ species. Meanwhile, the lower conversion of quinoline over the Re/ZrO₂, Re/SiO₂ and Re/y-Al₂O₃ catalysts was related to the combined effect of the textural properties of catalysts and the formation of ReS    species on the supports.

Keywords : Hydrodenitrogenation; ReS₂; quinoline; supports.

        · text in English     · English ( pdf )