LV Enjing1, ZHANG Huaike1, 2, YANG Yongning3, REN Jie1,2*
(1.Synfuels China Co. Ltd, Beijing 101407, China;2. Institute of Cola Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;3.Shandong Career Development College, Jining 272067, China)
Abstract: A series of Ni-Mo/γ-Al2O3 catalysts were prepared by impregnation method. The effect of Mo addition on the catalyst properties, hydrodeoxygenation (HDO) products, active sites of HDO and adsorbed species of acetic acid(or ethanol) were studied by X-ray diffraction , Temper -ature programmed surface reaction and Fourier transform infrared spectroscopy. The HDO activity and selectivity were measured using a continuous flow fixed-bed microreactor. Addition of Mo improved the dispersion of NiO and partially inhibited the C-C bond cleavage of acetic acid, also supplied new oxygen vacancies which promoted the C-O bond dissociation of acetic acid or ethanol. This gave an increase of HDO activity and ethane selectivity. It was presumed that the catalysis mechanism of HDO over Nickel-based catalyst was changed by Mo addition.
Key words: Ni-Mo/γ-Al2O3; Acetic acid; Hydrodeoxygenation; Oxygen vacancy ;Catalysis mechanism
E-mail: lvenjing2740@126.com
Journal of Molecular Catalysis, Vol. 26, Issue 4, 2012,333-339
