Catalysis Today, Vol.325, 61-67, 2019
The effect of metal (Nb, Ru, Pd, Pt) supported on SBA-16 on the hydrodeoxygenation reaction of phenol
Ordered silica materials of SBA-16 type were synthesized, characterized as to their physicochemical properties and used as supports of the active phases which were niobium, ruthenium, palladium or platinum ions. Physicochemical properties of the systems obtained were determined by XRD, N-2 sorption and TEM methods. Then the materials were used as catalytic systems in the process of phenol hydrodeoxygenation. The reaction was carried out in the range 90-130 degrees C under hydrogen pressure of 2.5-6 MPa. The effects of three variables on the course of the process were evaluated: (i) temperature, (ii) hydrogen pressure, (iii) type of active phase (metal). The main product of the reaction with the use of catalysts SBA-16/Ru, SBA-16/Pd, SBA-16/Pt was 2,4-dimethylhexane, while when using SBA-16/Nb, the main product was 1-methoxy-2-hexene. In the reaction conditions applied, 100% of phenol conversion was achieved. Direct effect of the reaction conditions, i.e., temperature and hydrogen pressure on the course of the process was observed.