Hydrodeoxygenation of 2-methoxyphenol over Mo 2N catalysts supported on activated carbons
Keywords: adsorption, spectroscopy, batch, activation, fluorescence, support, reactors, ray, surface, phenols, time, molybdenum, carbon, diffraction, catalyst, desorption, photoelectron, carbons, activity, supports, properties, impregnation, thermal, hydrodeoxygenation, chemical, hdo, 2-methoxyphenol, X, activated, Commercial, Programmed, wetness, Nitrided, nitridation
The hydrodeoxygenation (HDO) of 2-methoxyphenol using Mo 2N supported on three commercial activated carbons (Pica, Norit and Cudu) with different textural and chemical properties was studied. The reaction was carried out in a batch reactor at 50 bar of H 2 and 300 °C. The catalysts were prepared by wetness impregnation and nitrided with ammonia at 700 °C. The supports and catalysts were characterized by N 2 adsorption-desorption, thermal programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS), X-ray fluorescence and X-ray diffraction (XRD). The Mo 2N/Norit catalyst displayed higher HDO activity compared to the Mo 2N/Cudu and Mo 2N/Pica catalysts. HDO conversion increased when the Mo 2N/Norit catalysts were activated with hydrogen for 6 h at 400 °C due to increased surface nitridation. The Mo 2N/Norit catalyst displayed a higher phenol/catechol ratio relative to the Mo 2N/Pica and Mo 2N/Cudu catalysts, which displayed similar (phenol/catechol) ratios. The phenol/catechol ratio was unaffected by the H 2 activation time. © 2011 Elsevier B.V. All rights reserved.
|Título de la Revista:||CATALYSIS TODAY|
|Fecha de publicación:||2011|
|Página de inicio:||232|