SUPPORT EFFECT ON CONVERSION OF QUINOLINE OVER ReS2 CATALYST
The conversion of quinoline over ReS2 supported on y-Al2O3, SiO2, ZrO2 and TiO2 catalysts in a batch reactor at 300ºC 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...
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| Autores principales: | , , , , , , , , |
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| Lenguaje: | English |
| Publicado: |
Sociedad Chilena de Química
2016
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| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072016000400004 |
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| Sumario: | The conversion of quinoline over ReS2 supported on y-Al2O3, SiO2, ZrO2 and TiO2 catalysts in a batch reactor at 300ºC 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. |
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