HZSM-5对藻类及其模型物水热液化形成生物油路径的影响

Effects of HZSM-5 on the Formation Path of Bio-oil in Hydrothermal Liquefaction of Algae and Model Compounds

以藻类生物质及其主成分模型物为对象,在其水热液化过程中引入HZSM-5催化剂,考察HZSM-5用量对水热液化的生物油产率和热值的影响;对生物油进行GC-MS表征,推测了藻类生物水热液化中生物油形成的可能路径,并探究了HZSM-5对生物油形成路径的影响。结果表明,藻类3种主成分对其水热液化制取生物油的贡献率由大到小顺序为脂类化合物、蛋白质、多糖。HZSM-5的引入,分别使脂类液化生物油的产率和热值升高;蛋白质液化生物油的产率和热值降低;但对多糖几乎无影响。催化剂对不同藻类生物的水热液化过程中主成分间相互作用的影响不同。HZSM-5可显著影响藻类生物水热液化生成生物油的组分组成和含量,影响藻类中多糖、蛋白质和脂类化合物的降解路径和相互作用。

Taking algae and model compounds of algal main components as objects,HZSM-5 catalyst was introduced in the hydrothermal liquefaction(HTL)process to investigate the effect of HZSM-5 dosage on the yield and higher heating value(HHV)of bio-oil.Furthermore,the bio-oil was characterized by GC-MS.The possible formation path of bio-oil produced from algae HTL was presumed,and the influence of HZSM-5 on formation pathway of bio-oil was explored.Results show that the contribution rate of three main components of algae to produce bio-oil is from lipids,proteins and polysaccharides.The introduction of HZSM-5 increases the yield and HHV of bio-oil produced from lipids HTL,decreases the yield and HHV of bio-oil from proteins HTL decreased,while it almost has no effect on polysaccharides HTL.Catalysts show different effects on the interactions between main components during different algae.HZSM-5 significantly affect the composition and content of bio-oil from algae HTL,and the degradation pathways and interactions of polysaccharides,proteins and lipids in algae.