FCC馏分油在MoP/HZSM-5催化剂上临氢芳构化研究

制备了MoP/HZSM-5催化剂，采用XRD进行表征。在反应温度400℃、压力1.0MP、体积空速1.0h-1、氢油比400:1的条件下，在小型固定床反应装置上进行催化裂化汽油中间馏分(50～100℃)的芳构化反应，考查了不同钼质量分数、n(Mo):n(P)的摩尔比和温度对反应的影响。结果表明，钼质量分数及n(Mo):n(P)的摩尔比对反应有明显的影响，适当增加磷含量能提高催化剂性能。MoP/HZSM-5在钼的质量分数为3%、n(Mo):n(P)=1.5，反应温度为400℃时，改性催化剂芳构化活性最佳,液相产品中芳烃质量分数为65.43%,烯烃质量分数为5.42%，液收为61.04%。

STUDY ON THE HYDROAROMATIZATION OF FCC NAPHTHA OVER MoP/HZSM-5 CATALYST

MoP/HZSM-5 catalysts were prepared by temperature-programming reduction (TPR) and characterized by X-ray diffraction (XRD). The aromatization of FCC naphtha fraction (50~100 ℃) over MoP/HZSM-5 catalyst was conducted on a small-scale fixed bed reactor under a reaction temperature of 400℃, a reaction pressure of 1.0 MPa and a LHSV of 1.0 h-1. The effect of molybdenum content, the Mo/P mole ratio and reaction temperature on the aromatization was investigated. The results showed that the molybdenum content, initial Mo/P mole ratio and reaction temperature had significant influences on the aromatization of FCC naphtha. MoP/HZSM-5 catalyst having a molybdenum content of 3％ and an initial Mo/P mole ratio of 1:1.5 exhibited high aromatization activity at a reaction temperature of 400℃. A liquid product yield of 61.04% was obtained and the liquid product having an aromatics mass fraction of 65.43％ and an olefins mass fraction of 5.42％.