生物油中乙酸和乙醇共裂化获取汽油产物的研究简

Abstract Acetic acid was selected as the model compound representing the carboxylic acids present in bio-oil. This work focuses the co-cracking of acetic acid with ethanol for bio-gasoline production. The influences of reaction temperature and pressure on the conversion of reactants as well as the selectivity and Conaposition of the crudegasoline phase were investigated. It was found that increasing reaction temperature benefited the conversion of reactants and pressurized cracking produced a higher crude gasoline yield. At 400 ℃ and 1 MPa, the conversion of the reactants reached over 99% and the selectivity of the gasoline phase reached 42.79% （by mass）. The gasoline phase shows outstanding quality, with a hydrocarbon content of 100%.     

加氢催化剂对模拟生物油轻质组分与甲醇加氢共裂化制备芳香烃的影响

文章研究了不同加氢催化剂对富酚的模拟生物油轻质组分与甲醇加氢共裂化制备芳香烃过程的影响。研究结果表明,酚类在加氢阶段的加氢效率与整体的加氢共裂化表现呈现出一致性;以Ni/ZrO2为催化剂时,酚类在加氢阶段的转化率最高,加氢共裂化的油相产率也最高,为24.8%,且油相中芳香烃的相对含量在99%以上;其他加氢催化剂对酚类的转化效率相对较低,较多酚类的存在导致裂化阶段的催化剂快速失活,加氢共裂化的油相产率明显降低。     

催化剂与阻聚剂协同作用糠醛的生产

糠醛的生产一方面要促进半纤维素及戊糖水解反应的进行,同时也要减少糠醛副反应的发生。该文以Br?nsted和Lewis酸为催化剂促进糠醛的生成,对比FeCl_3、AlCl_3·6H_2O及ZnCl_2共3种氯盐及硫酸对糠醛生成的作用。在此基础上加入硫脲添加剂阻止糠醛聚合等副反应的发生,使糠醛产率由33.78%提高至47.59%(GB/T 2677.9—94方法计算糠醛理论产量,产率为63.61%),选择率由40.46%提升至62.45%。