玉米秸秆催化液化制备生物油实验研究

以玉米秸秆为原料,添加分子筛催化剂在体积为500 mL的高温高压反应釜中进行催化液化制备生物油实验研究。选取反应温度、催化剂含量和反应时间三个主要因素为变量,探究其对玉米秸秆催化液化产物分布的影响。利用气相色谱-质谱联用仪(GC-MS)和傅里叶红外光谱仪(FT-IR)对玉米秸秆生物油的成分和官能团结构进行分析。结果表明,玉米秸秆的最佳催化液化条件为,反应温度为340 ℃,玉米秸秆15 g,FeHZSM-5催化剂含量为6.67%,反应时间为30 min。在此条件下,生物油产率为28.03%,催化液化整体转化率为81.73%。生物油的主要成分为酚类和长链酯类,生物油的热值达30.08 MJ/kg。

Hydrothermal catalytic liquefaction of corn stalk for preparation of bio-oil

The hydrothermal catalytic liquefaction of corn stalk (CS) in a 500 mL batch reactor was conducted. The influence of reaction temperature and catalyst quantity as well as reaction time on the products distribution was investigated. The main components and functional groups of bio-oil with and without catalysts were characterized by gas chromatography/mass spectrometry (GC-MS) and Fourier transform infrared spectrometry (FT-IR). The result shows that the optimal conditions of liquefaction are 15 g CS with 6.67% FeHZSM-5 at 340 ℃ for 30 min, at which the bio-oil yield reaches a maximum of 28.03% with the highest CS conversion of 81.73%. The main components of bio-oil are phenols and esters, and the HHV of the bio-oil reaches to 30.08 MJ/kg.