TY - JOUR
T1 - Formation of hydrogen permselective silica membrane for elevated temperature hydrogen recovery from a mixture containing steam
AU - Sea, Bong Kuk
AU - Watanabe, Midori
AU - Kusakabe, Katsuki
AU - Morooka, Shigeharu
AU - Kim, Sung Soo
N1 - Funding Information:
This study was supported by a Grant-in-Aid for ScientificR esearcho n Priority Area ‘Principle of Exergy Regeneration(A 03-OO-04)f‘r, om the Ministry of Education, Science,S ports and Culture, Japan and by New Energy and IndustrialT echnologyD evelopmentO rgan- ization (NEDO) and ResearchI nstitute of Innovative Technology for the Earth (RITE). Useful discussions with Professor K. Yoshida of the University of Tokyo and ProfessorH . Ohya of Yokohama National University are gratefullya cknowledgedT.h e sealantw askindly suppliedb y Nippon Electric Glass Company.
PY - 1996
Y1 - 1996
N2 - A silica membrane was formed by chemical vapor deposition using tetraethylorthosilicate in macropores of an α-alumina tube or a γ-alumina film coated on the α-alumina tube. The reactant was evacuated through the porous wall, and silica was deposited in the macropores at 600-700°C. When the silica membrane was formed in a γ-alumina film coated on the α-alumina tube, hydrogen permeance at a permeation temperature of 600°C was 3 × 10-7 mol m-2 s-1 Pa-1, which was one order of magnitude higher than that of a membrane formed directly on the α-alumina tube. H2/N2 selectivity determined from the permeance of each component was 100-1000. To separate hydrogen selectively from abundant steam, however, a higher permselectivity was required. The membrane formed in the γ-alumina film at 650°C showed a hydrogen permeance of 3 × 10-8 mol m-2 s-1 Pa-1 and an H2/H2O selectivity of 7.6 at 400°C.
AB - A silica membrane was formed by chemical vapor deposition using tetraethylorthosilicate in macropores of an α-alumina tube or a γ-alumina film coated on the α-alumina tube. The reactant was evacuated through the porous wall, and silica was deposited in the macropores at 600-700°C. When the silica membrane was formed in a γ-alumina film coated on the α-alumina tube, hydrogen permeance at a permeation temperature of 600°C was 3 × 10-7 mol m-2 s-1 Pa-1, which was one order of magnitude higher than that of a membrane formed directly on the α-alumina tube. H2/N2 selectivity determined from the permeance of each component was 100-1000. To separate hydrogen selectively from abundant steam, however, a higher permselectivity was required. The membrane formed in the γ-alumina film at 650°C showed a hydrogen permeance of 3 × 10-8 mol m-2 s-1 Pa-1 and an H2/H2O selectivity of 7.6 at 400°C.
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U2 - 10.1016/0950-4214(96)00020-5
DO - 10.1016/0950-4214(96)00020-5
M3 - Article
AN - SCOPUS:0030242903
SN - 1383-5866
VL - 10
SP - 187
EP - 195
JO - Separations Technology
JF - Separations Technology
IS - 3
ER -