超临界流体具有低粘度、高扩散性、宽的密度范围以及很强的溶解能力等特殊性质.由于其溶解能力随压力和温度的变化,能在非常宽广的范围内调节,所以一种超临界流体能担当多种流体溶剂的作用.目前超临界流体成为化学界、工程界和地学界研究的热点.尽管超临界流体有广泛的应用前景 Supercritical fluids have the special properties of low viscosity, high diffusivity, wide range of densities and strong solvency, etc. Because of their ability to dissolve with pressure and temperature, they can be adjusted over a very wide range, so a supercritical fluid Fluid can play a role in a variety of fluid solvents.Current supercritical fluid has become a hot spot in the field of chemistry, engineering and geology.Although supercritical fluid has a wide range of applications