| Project/Area Number |
14205117
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
触媒・化学プロセス
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| Research Institution | Waseda University |
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Principal Investigator |
KIKUCHI Eiichi Waseda University, Faculty of Science and Engineering, Professor, 理工学術院, 教授 (90063734)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUKATA Masahiko Waseda University, Faculty of Science and Engineering, Professor, 理工学術院, 教授 (00219411)
SEKINE Yasushi Waseda University, Faculty of Science and Engineering, Professor, 理工学術院, 准教授 (20302771)
IKEGUCHI Masayuki Waseda University, Faculty of Science and Engineering, Professor, 理工学術院, 客員助手 (70367035)
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| Project Period (FY) |
2002 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥51,740,000 (Direct Cost: ¥39,800,000、Indirect Cost: ¥11,940,000)
Fiscal Year 2005: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2004: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
Fiscal Year 2003: ¥19,240,000 (Direct Cost: ¥14,800,000、Indirect Cost: ¥4,440,000)
Fiscal Year 2002: ¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
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| Keywords | asymmetric membrane / perovskite / oxygen-permeable / methane / oxidation / synthesis gas / hydrogen production / steam reforming / 酸素分離膜 / 混合伝導体 / 膜反応器 / 部分酸化 / 天然ガス / 非対称膜 / ペロブスカイト / 酸素透過膜 / セラミック / 結晶性 / 混合伝導性 / SFC / スラリー |
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| Research Abstract |
A disk-type Sm_<0.4>Ba_<0.6>Co_<0.2>Fe_<0.8>O_<3-δ> perovskite-type mixed-conducting membrane was applied to a membrane reactor for the partial oxidation of methane to syngas (CO + H_2). The reaction was carried out using Rh (1 wt%)/MgO catalyst by feeding CH_4 diluted with Ar.
While CH_4 conversion increased and CO selectivity slightly decreased with increasing temperature, a high level of CH_4 conversion (90%) and a high selectivity to CO (98%) were observed at 1173 K. The oxygen flux was increased under the conditions for the catalytic partial oxidation of CH_4 compared with that measured when Ar was fed to the permeation side. We investigated the reaction pathways in the membrane reactor using different membrane reactor configurations and different kinds of gas. In the membrane reactor without the catalyst, the oxygen flux was not improved even when CH_4 was fed to the permeation side, whereas the oxygen flux was enhanced when CO or H_2 was fed. It is implied that the oxidation of CO and H_2 with the surface oxygen on the permeation side improves the oxygen flux through the membrane, and that CO_2 and H_2O react with CH_4 by reforming reactions to form syngas.
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