抄録
Separation of gaseous mixture was carried out up to 773 k using composite microporous glass membranes coated on the surface of a porous ceramic tubings. The composition of the metal alkoxide solution used in the coating process was Si (OC2H5) 4 : 27.9, C2H5OH : 42.0, H2O : 26.2, HCl : 0.3 and H3BO3 : 3.6, in weight %.
With ceramic tubings supplied from TOTO Co., Ltd., much thinner microporous glass membranes can be made because 5 times of coating was enough to get without cracks, comparing at least 7 times for TDK Co., Ltd.. The membrane can permeate only H2O from thermochemical reaction gas mixture of H2 and H2O at the flux rate of 37 kg/ (m2·day) at trans-membrane pressure 0.196MPa and at 773 K.
