The Aromatization of Different Materials on Pt/HZSM-5

HZSM-5 zeolite supported on Pt catalysts were prepared by impregnation and temperature-programme reduction(TPR),and characterized by X-ray diffraction(XRD).By using FCC gasoline fractions of different model compounds and n-heptane on a small-scale fixed bed reactor,modified ZSM-5 investigated reviewed their aromatization performance under definite condition.The experimental results show that,when Pt/HZSM-5 content 0.5% in Pt,reaction under pressure 1.5 MPa,temperature 450 ℃,hydrogen to oil ratio of 800∶1 and volume space velocity of 2.0 h-1,Pt/HZSM-5 catalyst for the n-heptane aromatization activity and stability was the best;when the reaction under pressure 1.0 MPa,temperature 450 ℃,hydrocarbon to oil 800∶1 ratio and volume space velocity of 2.0 h-1,Pt/HZSM-5 catalyst showed better aromatization performance by distillated FCC gasoline between 50~100 ℃ and 80~120 ℃.