The oil-water interfacial tension, interfacial shearing viscosity, emulsion stability and viscosity reducing effect were investigated between two kinds of viscosity reducers and Tahe heavy oil. The results showed that the interfacial tension was decreased greatly by the water soluble viscosity reducer, while the interfacial shearing viscosity was mainly affected by the oil soluble viscosity reducer. The water soluble viscosity reducer was beneficial for the formation of the oil-water emulsion. The oil soluble viscosity reducer could improve the emulsion stability and had good viscosity reducing effect. When the oil soluble viscosity reducer was compounded with the water soluble one, the viscosity reducing effect and emulsion stability were greatly improved compared with the single reducer.

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 [KG*4]of [KG*4]different [KG*4]model [KG*4]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 ℃.