Process For Producing Porous Object And Apparatus Therefor

摘要

Disclosed is a process for producing porous materials by replacing a first solvent in a wet material containing the first solvent with a second solvent in a high pressure condition and drying the resulting wet material which process comprises a mixed solvent feeding step for feeding a mixed solvent composed of a solvent identical to or of the same kind as the first solvent and the second solvent to the wet material.