摘要
采用浸渍法制备了Mo-Ni/γ-Al2O3催化剂,利用BET、XRD、NH3-TPD等方法对还原态和硫化态Mo-Ni/γ-Al2O3催化剂进行了表征,并以模型化合物乙酸和F-T合成轻质油为原料,研究了还原态和硫化态催化剂的加氢脱氧(HDO)性能。结果表明,还原态催化剂具有较大的比表面积和孔体积,活性组分分散度较高;硫化态催化剂的酸性大于还原态催化剂。还原态催化剂具有比硫化态催化剂更好的HDO催化活性,不论是对模型化合物乙酸还是F-T合成轻质油都能获得更高的转化率;但用模型化合物乙酸的研究结果表明,硫化态催化剂不利于C—C键的断裂。
Mo-Ni/γ-Al2O3 catalysts were prepared by impregnation method and pretreated by reduction or sulfidation, then characterized by BET, XRD and NH3-TPD. The catalytic reactivities of reduced and sulfided Mo-Ni/γ-Al2O3 catalysts in the hydrodeoxygenation （HDO） of acetic acid and F-T light oil were evaluated. The results showed that the reduced Mo-Ni/γ-Al2O3 catalyst had larger surface area and pore volume as well as higher dispersion of active component than sulfided one, while the acidity of sulfided Mo-Ni/γ-Al2O3 catalyst was stronger than that of reduced one. The reduced Mo-Ni/γ-Al2O3 catalyst had higher HDO activity, that is, its HDO conversion was higher than that of sulfided catalyst, either for acetic acid or F-T light oil. On the other hand, the sulfided Mo-Ni/γ-Al2O3 catalyst was unfavorable for the C-C bond dissociation, which was proved by the HDO reaction of acetic acid.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2012年第5期764-768,共5页
Acta Petrolei Sinica(Petroleum Processing Section)
