Effect of Preparation Conditions of Catalyst on Hydrogenation of Methyl Propionate

The Ru - Pt catalyst was prepared by impregnation and different reduction methods and characterized by XRD and BET.The effect of preparation conditions of the catalyst on hydrogenation of methyl propionate in water solvent was investigated.The results indicated that the initial carrier(γ- Al_2O_3) of the catalyst was converted toγ- AlOOH after hydrothermal reduction and the catalyst prepared by coimpregnation and hydrothermal reduction exhibited the best activity and selectivity to propanol.Moreover,the temperature and the H_2 pressure in hydrothermal reduction affected conversion of the carrier and the BET area of the catalyst respectively and consequently affected the catalytic activity and propanol selectivity.The catalyst hydrothermally reduced at 180℃by 3 MPa pressure of H_2 exhibited the best catalytic behavior for hydrogenation of methyl propionate.The conversion of methyl propionate and the selectivity to propanol attained to 89.1%and 97.8%respectively.