【摘要】 为了获得具有优良乙醇脱水制乙烯性能的催化剂，对桉木木屑进行水热处理制得高比表面生物质碳基催化剂（HPC）;采用SEM、XRD、BET、NH₃-TPD、FT-IR和TPD等对催化剂物理化学结构进行表征；在自制的固定床反应器中进行乙醇制乙烯反应评价催化剂性能。实验结果表明：HPC催化剂具有更均匀的孔道结构和较大的比表面积，HPC-600的比表面积为1 748 m²/g;在氮气氛围中采用HPC-600催化剂，在温度为350℃,重时空速为3.5 h^-1时，乙醇转化率和乙烯选择性分别达到99.60%和100%。以水蒸气为载气进行10次循环实验后，实验结果表明初始乙醇单程转化率和乙烯选择性相差较小，但催化剂的稳定性得到一定提升。更多还原

【Abstract】 To obtain the catalyst with excellent performance of ethanol dehydration to ethylene, hydrothermal treatment of eucalyptus sawdust is used to prepare high specific surface biomass carbon-based catalyst（HPC）.The physicochemical structure of the catalyst is characterized by SEM, XRD, BET, NH₃-TPD, FT-IR and TPD, and the catalytic performance of ethanol to ethylene is tested in a self-made fixed bed reactor.The experimental results show that the HPC catalyst has a uniform pore structure and a larger specific surface area, and the specific surface area of HPC-600 is 1 748 m²/g.Moreover, when it is used in the N₂ atmosphere, with the temperature of 350 ℃ and the WHSV of 3.5 h^-1, the ethanol conversion and ethylene selectivity of HPC-600 are 99.60% and 100%, respectively.After the 10 cycle tests in water vapor atmosphere, the initial single-pass ethanol conversion and ethylene selectivity has no significant changes, indicating that the stability of the catalyst is improved.更多还原