Synthesis of C-Plane Oriented Hexagonal Tungsten Oxide Membranes on Tubular Substrates and Their Acetic Acid/Water Separation Performances.

Hexagonal tungsten oxide (h-WO) membrane is a novel candidate for dehydration of acetic acid (CHCOOH)/water mixtures owing to its molecular sieving property and acidic resistance. Meanwhile, c-plane orientation is an important factor for h-WO membranes because the pores of h-WO run along its c-axis. However, so far, high c-plane orientation has not been successful on tubular substrates.

Synthesis of MOR Zeolite/Magnetite Composite via Seed Assisted Method.

MOR zeolite is an effective adsorbent for separating organic molecules from various solutions owing to its large windows of 0)65 × 0)70 nm and its relatively high silica-alumina ratio which provides higher hydrophobicity. Fine powdery MOR zeolite is desirable for adsorption of organic molecules considering its larger surface area; however, fine particles are difficult to remove from solutions after treatment. Intensification of magnetic susceptibility through combination with magnetic particles ensure quick and easy removal of fine adsorbents by magnetic force.