低碳化学与化工2025，Vol.50Issue(10)：56-64,9.DOI:10.12434/j.issn.2097-2547.20240434
HZSM-5分子筛催化裂解稻草秸秆制生物油的实验研究
Experimental study on catalytic cracking of rice straw by HZSM-5 zeolite to produce bio-oil
摘要
Abstract
At present,the world is focusing on low-carbon and sustainable energy.Biomass liquefaction,as a crucial pathway for renewable energy conversion,has attracted extensive attention.When traditional homogeneous catalysts are used in biomass liquefaction,it is difficult to separate and purify the bio-oil due to the co-phase with the bio-oil.Moreover,their strong acid-base properties are likely to cause serious environmental pollution problems.In order to solve the above problems,zeolites with great hydrothermal stability,high specific surface area and unique pore structure were selected as catalysts.The NaZSM-5 zeolite was modified through ion exchange method to prepare HZSM-5 zeolite.Characterization techniques including EA,XRD,FTIR and SEM were employed to analyze structural and morphological changes of zeolites before and after modification,using commercial HZSM-5 zeolite as reference.Employing HZSM-5 zeolite as catalyst,single-factor experiments were conducted to investigate the effects of various experimental conditions on liquefaction yield in rice straw liquefaction.The results show that the maximum liquefaction yield is 67.8%under optimal conditions:reaction temperature of 180℃,liquid-to-solid ratio(mass ratio of liquefaction agent to rice straw)of 5:1,reaction duration of 105 min,and catalyst dosage of 10%(mass percentage relative to liquefaction agent).Comparative analysis of physicochemical properties between bio-oil and crude oil reveales significant differences.The bio-oil exhibits distinctive characteristics including high viscosity,acidic nature,elevated hydroxyl value and carbon residue rate,demonstrating promising application prospects in chemical production fields.关键词
HZSM-5分子筛/稻草秸秆/常压液化/催化剂/生物油Key words
HZSM-5 zeolite/rice straw/atmospheric liquefaction/catalyst/bio-oil分类
能源科技引用本文复制引用
乔文朴,张妍,高壮志,赵会芳..HZSM-5分子筛催化裂解稻草秸秆制生物油的实验研究[J].低碳化学与化工,2025,50(10):56-64,9.基金项目
浙江省自然科学基金(LQ23C160001). （LQ23C160001）
