Industry repercussion effect is not only one of the foundations to measure the position of one industry in national economy system, but also a main basis for government to locate a leading industry. Through introducing the sensitivity degree coefficient and influencing power coefficient, the repercussion of Chinese petroleum industry has been measured. Furthermore, the strategic position of it in national economy was researched with econometric measures. The strategic attribute of petroleum industry was proved based on the studies above.

The TiO ₂-SiO ₂-Al ₂O ₃ composite support was prepared by sol-gel method, and then the MoP/TiO ₂-SiO ₂-Al ₂O ₃ catalyst was prepared in the way of co-impregnation. XRD results show that the diffraction peaks of TiO ₂ crystalline phase is due to anatase and SiO ₂ is mostly amorphous dispersed in γ-Al ₂O ₃ cystal surface. After in-situ reduction, the hydrodearomatization (HDA) activity of the catalyst was investigated in the fixed bed reactor. The results suggest that the mole ratio of Ti, Si and Al have a great influence on the activity of composite support catalyst. HDA activity of the MoP/TiO ₂-SiO ₂-Al ₂O ₃ catalyst shows the highest activity (65.6%) when the ratio of n(Ti)∶n(Si)∶n(Al) was 1∶1∶4, the Mo loading amount is 20%. In addition, the results also show that the HDA rate of the catalyst with the composite TiO ₂-SiO ₂-Al ₂O ₃ support was 19.6% and 13.6% higher than the traditional cataslysts of γ-Al ₂O ₃ and SiO ₂-Al ₂O ₃, respectively.