操作条件对 Ni/TiO 催化剂作用下螺旋藻水热液化的影响。
Effect of operating conditions on hydrothermal liquefaction of Spirulina over Ni/TiO catalyst.
机构信息
School of Environment and Natural Resource, Renmin University of China, Beijing 100872, PR China.
College of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, PR China.
出版信息
Bioresour Technol. 2018 Sep;263:569-575. doi: 10.1016/j.biortech.2018.05.014. Epub 2018 May 4.
In this study, the effects of reaction temperature, holding time, algae/water ratio and catalyst dosage on the yield and quality of bio-oil produced via the HTL of Spirulina were investigated. The maximum bio-oil yield (43.05 wt%) and energy recovery (ER) value (64.62%) were obtained at 260 °C for 30 min, with an algae/water ratio of 1/4 and a catalyst dosage of 5 wt%. The bio-oil samples were characterized by elemental analysis, Gas Chromatography-Mass Spectrometry (GC-MS), Fourier Transform Infrared (FI-IR), and Thermo-gravimetric analysis (TGA). Results indicated that higher heating values (HHVs) of bio-oils were in the range of 27.28-36.01 MJ/kg, and main compounds of bio-oil were amides, esters, nitriles, hydroperoxide and alkanes. Adding of the Ni/TiO catalyst can decrease the contents of oxygenated and nitrogenous compounds and promote the formation of desirable components such as esters and alkanes.
在这项研究中，考察了反应温度、保温时间、藻水比和催化剂用量对螺旋藻热解制生物油的产率和品质的影响。在 260°C 下反应 30 分钟，藻水比为 1/4，催化剂用量为 5wt%时，生物油的最大产率（43.05wt%）和能量回收率（ER）值（64.62%）最高。采用元素分析、气相色谱-质谱联用（GC-MS）、傅里叶变换红外光谱（FT-IR）和热重分析（TGA）对生物油样品进行了表征。结果表明，生物油的高位热值（HHV）在 27.28-36.01MJ/kg 范围内，生物油的主要化合物为酰胺、酯、腈、过氧化物和烷烃。添加 Ni/TiO 催化剂可以降低含氧化合物和含氮化合物的含量，并促进酯类和烷烃等理想成分的形成。
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