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Myagmarjav, O.; Tanaka, Nobuyuki; Nomura, Mikihiro*; Noguchi, Hiroki; Imai, Yoshiyuki; Kamiji, Yu; Kubo, Shinji; Takegami, Hiroaki
Progress in Nuclear Energy, 137, p.103772_1 - 103772_7, 2021/07
Times Cited Count:8 Percentile:71.07(Nuclear Science & Technology)Myagmarjav, O.; Tanaka, Nobuyuki; Nomura, Mikihiro*; Kubo, Shinji
International Journal of Hydrogen Energy, 44(59), p.30832 - 30839, 2019/11
Times Cited Count:11 Percentile:28.61(Chemistry, Physical)Myagmarjav, O.; Tanaka, Nobuyuki; Nomura, Mikihiro*; Kubo, Shinji
International Journal of Hydrogen Energy, 42(49), p.29091 - 29100, 2017/12
Times Cited Count:23 Percentile:51.45(Chemistry, Physical)The catalytic decomposition of hydrogen iodide in a membrane reactor using silica membranes derived from hexyltrimethoxysilane (HTMOS) was investigated for the production of hydrogen in the thermochemical water splitting iodine-sulfur process. The silica membranes were prepared by counter-diffusion chemical vapor deposition using porous alumina support tubes in both the absence and presence of a -alumina layer. The silica membranes formed on
-alumina-coated
-alumina tubes displayed a higher H
permeance than that formed directly on an
-alumina tube. A silica membrane based on a 1.5
m-thick
-alumina layer fabricated under deposition conditions of 450
C, 1200 s, and a N
carrier gas velocity of 0.044 m s
exhibited a high H
permeance of 9.4
10
mol Pa
m
s
while maintaining an H
/N
selectivity of over 80.0. The performance of a membrane reactor based on an HTMOS-derived silica membrane was evaluated at 400
C by measuring the HI conversion and H
flow rates. The conversion was approximately 0.48 when the HI flow rate was 9.7 mL min
.
Myagmarjav, O.; Ikeda, Ayumi*; Tanaka, Nobuyuki; Kubo, Shinji; Nomura, Mikihiro*
International Journal of Hydrogen Energy, 42(9), p.6012 - 6023, 2017/03
Times Cited Count:21 Percentile:49.80(Chemistry, Physical)Hwang, G.*; Kim, J.*; Choi, H.*; Onuki, Kaoru
Journal of Membrane Science, 215(1-2), p.293 - 302, 2003/04
Times Cited Count:16 Percentile:55.84(Engineering, Chemical)no abstracts in English
Hwang, G.; Onuki, Kaoru
Journal of Membrane Science, 194(2), p.207 - 215, 2001/12
Times Cited Count:62 Percentile:87.18(Engineering, Chemical)no abstracts in English
Hwang, G.; Onuki, Kaoru; Shimizu, Saburo
AIChE Journal, 46(1), p.92 - 98, 2000/01
Times Cited Count:38 Percentile:77.12(Engineering, Chemical)no abstracts in English
Hwang, G.*; Onuki, Kaoru; Shimizu, Saburo;
J. Membr. Sci., 162(1-2), p.83 - 90, 1999/00
Times Cited Count:67 Percentile:90.01(Engineering, Chemical)no abstracts in English
Hwang, G.*; Onuki, Kaoru; Shimizu, Saburo
JAERI-Research 98-002, 8 Pages, 1998/01
no abstracts in English
Onuki, Kaoru; ; Nakajima, Hayato; Shimizu, Saburo
J. Chem. Eng. Jpn., 30(2), p.359 - 362, 1997/00
Times Cited Count:3 Percentile:35.06(Engineering, Chemical)no abstracts in English
Myagmarjav, O.; Ikeda, Ayumi*; Nomura, Mikihiro*; Kubo, Shinji
no journal, ,
In this study, we have developed a highly hydrogen permeable silica membrane derived from hexyltrimethoxysilane as a Si precursor using porous alumina support. Modification of alumina support tubes in the absence of and in the presence of -alumina coating was carried out by a counter diffusion chemical vapor deposition (CVD). A membrane with intermediate
-alumina layer showed higher H
permeance (7.7
10
mol m
s
Pa
) than that formed directly on the
-alumina tube (3.8
10
mol m
s
Pa
). It was found that the thickness of
-alumina layer played an important role in the improvement of membrane permeation performance. Modified membrane based on
-alumina coating with a thickness of 1.5
m exhibited H
/SF
selectivity over 3000 at 270
C, while maintaining H
permeance in the order of 10
mol m
s
Pa
. The results led to the conclusion that the modified membrane is a promising candidate for further enhancement of HI decomposition in membrane reactor.
Myagmarjav, O.; Tanaka, Nobuyuki; Noguchi, Hiroki; Kubo, Shinji; Nomura, Mikihiro*; Takegami, Hiroaki
no journal, ,