利用 Ni/REHY 催化剂对杜氏盐藻进行水热液化制备生物油。
Bio-oil from hydro-liquefaction of Dunaliella salina over Ni/REHY catalyst.
机构信息
Department of Chemical Engineering and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China.
出版信息
Bioresour Technol. 2011 Mar;102(6):4580-4. doi: 10.1016/j.biortech.2010.12.111. Epub 2011 Jan 5.
The hydro-liquefaction of Dunaliella salina over solid acid catalyst was examined under moderate conditions (200°C, 2.0 MPa, 60 min). The significant increment of bio-oil yield was obtained over Ni/REHY catalyst, increasing about 20% compared without modified REHY. H(2)-temperature-programmed desorption (H(2)-TPD) and X-ray powder diffraction (XRD) demonstrated that Ni/REHY as bifunctional catalyst played roles in hydrogenation and cracking, and further achieved the deoxygenation and desulfurization of D. salina under hydrogen gas. The oxygen and sulfur contents of bio-oils decreased relative to D. salina, and the higher heating value (HHV) significantly increased to 30.11 MJ/kg. From gas chromatography/mass spectrometry (GC/MS), the dominant compounds of the bio-oils were found to be esters, glycerins. The qualities of bio-oils were greatly improved. Hydro-liquefaction was beneficial to the exploration of bio-oils from microalgae.
盐生杜氏藻在固体酸催化剂作用下的水热液化条件温和（200°C，2.0 MPa，60 min）。在 Ni/REHY 催化剂作用下，生物油产率显著增加，比未改性的 REHY 增加了约 20%。H2-程序升温脱附（H2-TPD）和 X 射线粉末衍射（XRD）表明，Ni/REHY 作为双功能催化剂在加氢和裂化中发挥作用，并在氢气作用下进一步实现盐生杜氏藻的脱氧脱硫。生物油的氧和硫含量相对于盐生杜氏藻降低，高位热值（HHV）显著增加到 30.11 MJ/kg。通过气相色谱/质谱（GC/MS）分析，发现生物油的主要化合物为酯类、甘油。生物油的质量得到了极大的改善。水热液化有利于从微藻中探索生物油。
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