【摘要】 为进一步提高生物油的品质，探究盐酸预处理及Mo改性HZSM-5催化剂对热解产物生物油组分分布的影响规律，以玉米秸秆为原料，采用等体积浸渍法制备Mo/HZSM-5催化剂，并用XRD、SEM、FTIR对催化剂进行表征分析，利用Py-GC/MS装置对热解生物油的组分进行分析。结果表明：酸洗和酸浸渍能有效减少生物油中酸类和酮类化合物的含量，生物油中糠醛的相对含量从3.21%分别提高到5.24%和4.46%，并促进生成了新物质D-阿洛糖相对含量分别为3.42%和3.33%。HZSM-5和Mo/HZSM-5的催化作用能显著降低生物油中乙酸的含量，与原生物油相比分别减少8.34%和7.34%，同时提高了糠醛和D-阿洛糖的相对含量。另外，在Mo/HZSM-5作用下产生新物质环己烷相对含量分别为1.14%、1.25%、1.35%，使苯、甲苯和二甲苯（BTX）的相对含量进一步提高。酸浸渍和Mo/HZSM-5的共同作用显著降低了生物油中醛类、酮类和酸类等含氧化合物含量，使芳烃类化合的相对含量达到最大值，有效改善了生物油的品质，为玉米秸秆的高质化利用提供了理论基础。更多还原

【Abstract】 In order to further improve the quality of bio-oil and explore the influence of hydrochloric acid pretreatment and Mo modification of HZSM-5 catalyst on the distribution of bio-oil components in pyrolysis products, the Mo/HZSM-5 catalyst was prepared by constant volume impregnation method using corn stalk as raw material, and the catalyst was characterized and analyzed with XRD, SEM and FTIR. The components of pyrolysis bio-oil were analyzed with PY-GC/MS device. The results showed that the acid pickling and acid dipping could effectively reduce the contents of acids and ketones in bio-oil, and the relative contents of furfural in bio-oil increased from 3.21% to 5.24% and 4.46%, respectively. They contributed to the production of D-alosaccharide and the relative contents were 3.42% and 3.33%, respectively. The catalytic effects of HZSM-5 and Mo/HZSM-5 significantly reduced the acetic acid content in bio-oil by 8.34% and 7.34%, respectively, and increased the relative contents of furfural and Dalosaccharide. In addition, the relative contents of cyclohexane produced by Mo/HZSM-5 were 1.14%, 1.25% and 1.35%, respectively,which further increased the relative contents of benzene, toluene and xylene(BTX). The combined effect of acid impregnation and Mo/HZSM-5 significantly reduced the contents of aldehydes, ketones, acids and other oxygen-containing compounds in bio-oil, and maximized the relative contents of aromatic hydrocarbons, which effectively improved the quality of bio-oil, and provided a theoretical basis for the efficient utilization of corn stalk.更多还原