The results showed that the viscous flow plus Knudsen diffusion could explain the permeation mechanism of supercritical CO_2 through macroporous membranes, where the surface diffusion was negligible.

• 理论分析与实验结果表明,当表面扩散可以忽略不计的时候,粘性流和Knudsen扩散可以解释超临界CO_2通过多孔膜的渗透行为。