or homogeneous catalysis [13], etc. However, most of the demonstrated phase transfer catalytic reactions are simple biphase system involving SCF-CO2, such as liquide solid, supercritical solid and/or supercriticale supercritical systems. Especially, most of them belong to homogeneous catalytic reactions. But in practice, especially for industrial applications, more phase systems and more complicated phase transfer catalysis are necessary and frequently encountered, such as the dye fixation in a liquid-supercritical-solid triphase system.