Support effect on conversion of quinoline over res2 catalyst

• R BASSM ^[1] ; M VILLARROEL ^[2] ; F J GIL-LLAMBIAS ^[2] ; P BAEZA ^[1] ; J. L GARCÍA-FIERRO ^[3] ; N MARTÍNEZ ^[4] ; P OLIVERA ^[4] ; K LEIVA ^[4] ; N ESCALONA ^[5]
  1. [1] Pontificia Universidad Católica de Valparaíso Facultad de Ciencias Instituto de Química
  2. [2] Universidad de Santiago de Chile
  3. [3] Instituto de Catálisis y Petroquímica
  4. [4] Universidad de Concepción Facultad de Ciencias Químicas
  5. [5] Pontificia Universidad Católica de Chile Escuela de Ingeniería Departamento de Ingeniería Química y Bioprocesos

  Mostrar afiliaciones +
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 61, Nº. 4, 2016, págs. 3170-3176
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • 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.