用于稠油水热催化降黏的keggin型杂多酸盐的制备表征及应用

Synthesis and Characterization of Keggin Heteropoly Acid Salt Used in Aquathermolysis Reaction of Heavy Oil

采用室温固相反应的方法合成了纳米级的keggin型杂多酸盐,使用红外光谱IR、X射线衍射XRD和激光电位粒度检测法ZSI等方法进行了表征,并将其用于特、超稠油的水热催化裂解降黏反应,使用棒薄层火焰离子化分析仪TLC-FID对反应前后稠油的族组成进行了测定,研究结果表明:纳米级的keggin型杂多酸盐可以使G540稠油在200℃时黏度降低80%以上,并有9.25%的重质组分裂解为轻质组分。

Heteropoly acid salt （HPAS） with high catalytic activity has been widely used in some industrial production, but not in the aquathermolysis reaction of heavy oil. In this paper, the nano-keggin- HPAS catalyst was synthesized and then characterized by the FT-IR, XRD, and ZSI. The good catalytic efficiency of nano-keggin-HPAS in aquathermolysis reaction was proved by the reactions with heavy oil. The analyses of the Group Composition of heavy oil before and after the reaction by TLC-FID showed evident reduction of viscosity. For G540 oil sample, under 200℃, the rate of viscosity reduction could reach to 80% ,and the conversion of heavy content to the light content were 9.25%.