In order to improve the safety of air flooding and quality of heavy oil, static oxidation experiments were conducted to research the effect of oil displacement agent on the catalytic low temperature oxidation (CLTO) of heavy oil. The results showed that the oil displacement agent could accelerate the oxygen consumption rate, and especially the effect of NaOH and PAM on oxygen consumption rate were obvious. Saturates, aromatics, resins and asphaltenes (SARA) analysis and experiments using oil displacement agent were preformed to study the effect of oil displacement agent on the crude oil components. Saturates and aromatics were converted to resins and asphaltenes during low temperature oxidation (LTO), and the addition of Fe3O4 nanoparticles could reverse this change. This study can provide guidelines to select of oil displacement agent, improve the safety and increase the application of air flooding technology.

CuOZnOZrO2 catalyst was modified by combustion method, using Al2O3, CeO2, NiO metal oxides as promoters. The effects of Al2O3, CeO2, NiO on phase composition and catalyst structure were illuminated by using Xraydiffraction (XRD), temperatureprogrammed reduction ofhydrogen(H2TPR), temperatureprogrammed desorption of hydrogen (H2TPD) and carbon dioxide (CO2TPD) techniques. And the effects of the three chosen promoters on catalytic performance for CO2 hydrogenation to methanol were studied in a fixedbed plug flow reactor. The results indicated that the three promotes of Al2O3, CeO2, NiO all contributed to improving theactivity of catalysts and CeO2modified catalyst had best catalytic performance. Moreover, the three promotes all could inhibit CuO crystal grain growth and improve the dispersion of CuO, which could benefit the reduction of catalysts and H2 adsorptiondissociation. Besides that, the three metal oxides could modulate the intensity amount of basic sites on the catalyst surface in different degrees. Comparing with NiOmodified catalyst, CeO2modified catalyst and Al2O3 modified catalyst both possessed higher basic intensity and more basia sites, which led to CO2 adsorptionactivation easily.

Surface acidities of the Y zeolites(NaY, HY, LCeY and HRSY3) were characterized by temperatureprogrammed desorption of ammonia(NH3TPD) and in situ fourier transform Infrared Spectroscopy using pyridine as probe molecule (PyFTIR). The adsorption and catalytic transformation behaviors of sulfides on Y zeolites modified by rare ions were studied by in situ fourier transform Infrared Spectroscopy (in situ FTIR) technology using thiophene andthiophane as the probe molecules, respectively. The results indicated that thiophene molecules protonated upon the strong Brnsted acid sites of the zeolites at room temperature, then protonated products could further oligomerize. The synergy between L acid sites (included Ce species andnonframework aluminum species) and Brnsted (B) acid sites was favorable to oligomerization reaction of Thiophene, however, there were no reactions of thiophane over NaY, HY and REY. 