Using CO as the probe molecule, infrared diffuse reflectance spectroscopy was used to study the adsorption of Pd⁃Ag/Al2O3 catalysts prepared by impregnation method and the carbon monoxide adsorption on the support and a series of changes in the surface species of the catalyst. The results showed that in the Pd⁃Ag/Al2O3 catalytic system, due to the different order of silver addition, the active center of the catalyst was affected by the electronic effect and the geometric effect, which caused the surface species adsorption morphology of the catalyst after CO adsorption. It was found that there was no bridge adsorption of CO on Pd⁃Ag/Al2O3⁃LM⁃2 catalyst when CO was adsorbed and desorbed before and after heating. The characteristic peak intensity of HCO〖_3^-〗 was found decreased with the increase of CO adsorption and desorption temperature. At the same time, the adsorption characteristic peak of HCOO- was relatively enhanced, and the consistent growth and decline relationship between the two indicated that HCO〖_3^-〗 was converted to HCOO- during the heating process.

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.

Using active carbon as carrier, SnCl4 based non mercury catalysts, including Sn@AC, Sn - Bi@AC, Sn - Bi - Co@AC, were synthesized by adding different content of BiCl3 and CoCl3. The catalysts were evaluated in acetylene hydrochlorination atmospheric fixed bed reactor. The results showed that the catalytic properties of synthetic three component catalysts were optimal on the proportion of 10%SnCl4, 5%BiCl3 and 10%CoCl3. Acetylene's conversion rate was more than 90% and the selectivity of vinyl chloride was a round 95% within the reaction time of 100 h. Through the XRD and physical adsorption instrument, catalyst microstructures were characterized. Coconut shell activated carbon's specific surface area and pore size was significant increased after nitric acid t reatment; adding component BiCl3 and CoCl3 could make the coke phenomenon on catalytic surface weakened.

Acidity and accessibility of LNiY were characterized by in situ FTIR spectroscopy with pyridine (Py), 2,6dimethylpyridine (DTPy) and 2,6ditertbutylpyridine (DTBPy) as the probing molecules, and the texture properties were characterized by N2 adsorption method. The textual property results indicate thatmesoporous defect positions exist in the prepared LNiY zeolites.The in situ FTIR results imply that hydroxyl are strong Brnsted acid in supercages of the LNiY zeolites. The accessibility of the Brnstedacid sites is different, and the ones in the defect positions show the more excellent accessibility. 