Effects of post-processing treatment on sorption isotherm of an effectively hydrophilic zeolite β

Abstract

The effects of post-processing treatments on infiltration and defiltration of liquids in acid-leached zeolite β were investigated. The infiltration pressure, which reflects the effective degree of hydrophobicity of the nanopore surface, and the defiltration pressure, which dominates the system hysteresis, can be controlled in broad ranges by adjusting anion species and liquid composition, and/or performing hydrothermal or silicon addition treatment. These experimental results have important relevance to developing liquid spring and active control techniques.

Acknowledgement

This work was supported by The Air Force Office of Scientific Research under Grant No. FA9550-06-1-0181.