Promoting Effects of Al on Ni-Based Catalyst for the Hydrodeoxygenation Performance of Ethyl Acetate

Abstract

Abstract The mesoporous Ni20/Al-KIT-6 (denoted as N20AxK) catalysts with different Al content (1–9 wt%) were prepared, metal Ni and KIT-6 modified by Al were used as active component and support, respectively. The physicochemical properties of the prepared N20AxK catalysts were characterized by H2-TPR, XRD, BET, TEM, and H2-TPD. The catalytic hydrodeoxygenation(HDO) performance of N20AxK catalysts was evaluated by ethyl acetate catalytic HDO. The results show that the catalytic HDO performance of the prepared N20AxK catalysts is related to the adsorption and activation performance for H2 molecules, as well as the dispersion of matal Ni active components. N20A5K catalyst shows the best H2 adsorption property and Ni dispersion. N20A5K catalyst presents superior catalytic HDO performance. At 300 °C and atmospheric pressure, the conversion of ethyl acetate and ethane selectivity of N20A5K catalyst are 99.3 % and 97.4 %, respectively. Besides, the N20A5K catalyst exhibits good stability.