超临界干燥法与其他常规方法[6]相比对水化产物的形貌保持较好。但高温和

Compared with other conventional methods [6], the supercritical drying method keeps the morphology of the hydrated product better. But high temperature and high pressure make the process expensive and dangerous. A convenient alternative is to replace the pore liquid with substances with much lower critical points, such as methanol and ethanol [42].

The supercritical drying method maintains a good shape of the hydration product compared with other conventional methods. But high temperatures and pressures make the process expensive and dangerous. A convenient alternative is to replace pore fluids with substances with much lower critical points, such as methanol and ethanol.

Compared with other conventional methods [6], supercritical drying method can keep the morphology of hydrated products better. But high temperature and high pressure make the process expensive and dangerous. A convenient alternative is to replace porous liquids with substances with much lower critical points, such as methanol and ethanol [42].<br>