Ruthenium -containing SBA-12 catalysts for anisole hydrodeoxygenation

Hexagonally ordered mesoporous silica SBA -12 catalysts containing various amounts of Ru (1 or 3 wt.%) were obtained by wet impregnation. These catalysts were thoroughly characterized by X-ray di ffraction (XRD), transmission electron microscopy (TEM), and low -temperature nitrogen adsorption/desorption (N 2 ads/des). Anisole conversion was measured over catalysts at di fferent process conditions, where the process temperature was 90 -130 ?C and the hydrogen pressure - 25 -60 bar. Prior the experiments the process was optimized, i.e., the amount of catalyst used in the reaction and the time of reaction were adjusted. This study shows a signi ficant e ffect of hydrogen pressure and process temperature on the hydrodeoxygenation of anisole, the conversion of which increased (16 -100 %) with both increasing parameters. For all the catalysts studied, the highest selectivity was obtained for two main reaction products, methoxycyclohexane and 1-methoxycyclohexene. Along with increasing conversion of anisole, the selectivity to the main reaction product - methoxycyclohexane generally