氢化裂解三叶木通油制备生物柴油的研究

Biodiesel Prepared by Hydrocracking Akebia trifoliata Oil

本试验尝试采用氢化裂解植物油的途径制备生物柴油.通过浸渍负载法制备了双功能催化剂Ni-HPMo/Al2O3,并通过氮气吸附、X射线晶体衍射和扫描电镜对催化剂进行了表征.以三叶木通油为原料,在温度350℃,氢气压力3.8 MPa,空速1.2h^-1,氢油比700 Nm^3/m^3的反应条件下,利用制备的催化剂,对三叶木通油进行氢化裂解,得到了以C15～C18烷烃组分为主的生物柴油;催化过程中,转化率为98.2％,选择性为83.9％,制备的生物柴油十六烷值达91.该制备的生物柴油与石化柴油具有相似的结构,为开发新型高十六烷值生物柴油提供了参考.

This work focuses on hydrocracking vegetable oils to obtain biodiesel. The Ni - HPMo/Al2O3 catalyst employed in this study was prepared by the impregnation loading method and characterized by using N2 adsorption, X -ray crystal diffraction, and scanning electron microscopy techniques. The conversion rate of 98.2% and selectivity of 83.9% in Akebia trifoliata oil toward C 15～ C 18 fractions with high cetane numbers 91 were obtained at： temper- ature of 350 ℃ ; hydrogen pressure of 3.8 MPa ; liquid hourly space velocity of 1.2 h ^- 1 ; and H2/oil volume ratio of 700 Nm^3/m^3. The prepared biodiesel had a similar structure to petroleum diesel. This work provides a reference for the development of novel saturated biodiesel with high cetane value.