Preparation of composite microporous glass membrane on ceramic tubing.

Porous thin glass membranes of which thickness is in the range of 5 to 23μm have been prepared on the surface of porous ceramic tubing by coating with metal alkoxide solution, drying, heating and acid leaching sequentially. Structure of the membranes was investigated by Scanning Electron Microscope, and found that pore size is in the range of 4 to 64nm