1999 Fiscal Year Final Research Report Summary
Synthesis of new adsorbents for prodution of oxygen gas form air combustion
| Project/Area Number |
09555276
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
無機工業化学
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| Research Institution | YAMANASHI UNIVERSITY |
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Principal Investigator |
KINOMURA Nobukazu Yamanashi University, Faculty of Engineering, Professor, 工学部, 教授 (50029732)
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| Co-Investigator(Kenkyū-buntansha) |
SAKANE Hideto Yamanashi University, Center for Instrumental Analysis, Associate Professor, 工学部, 助教授 (50252010)
KUMADA Nobuhiro Yamanashi University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (90161702)
SUZUKI Takashi Yamanashi University, Faculty of Engineering, Professor, 工学部, 教授 (60020385)
NAKAYAMA Ichiro Nippon Sanso Corporation, Technology Administration Department, Deputy General Manager, 技術開発本部, 室長代理
KAWAKAMI Hirosi Nippon Sanso Corporation, Tikuba Laboratory, General Manager, つくば研究所, 室長
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| Project Period (FY) |
1997 – 1999
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| Keywords | Pillared Clay / Barium Ferrite / Inorganic-Organic Complex / Zirconium Phosphate / Silylation / Ion Exchange Resin / Porous Materials / Separation of air |
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| Research Abstract |
Oxygen combustion is considered to be more desirable combustion technic than ordinary air combustion from view point of efficiency and air pollution. However oxygen gas produced by prevalent manufacturing process is still too expensive for the wide use of oxygen combustion. In order to develop a low cost separation system for production of oxygen gas from air at room temperature and atmospheric pressure, new adsorbents with the high oxygen selectivity were explored. As candidates for such adsorbents porous pillared clay compounds, organic derivatives of layered phosphates and partially carbonized materials were chosen in this study.
Montmorillonite pillared with barium ferrite was prepared by calcination of montmorillonite including barium ions and polynuclear iron carboxylate ions in the interlayer spaces. The pillared montmorillonite was found to have the specific surface area of 152 mィイD12ィエD1/g and exhibit the selective adsorption for oxygen (4.4 times larger than that for nitrogen) at room temperature. Magnetic micropore is considered to adsorb more paramagnetic oxygen gas than diamagnetic nitrogen gas. Selective adsorption of oxygen was also observed for organic derivatives of zirconium phosphate such as zirconium phenylphosphonate phosphate with surface area of about 200 mィイD12ィエD1/g and silylated zirconium phosphate. Porous carbonaceous materials which were prepared from ion-exchange resin containing metal ions such as iron and cobalt by partial carbonization at relatively low temperatures also showed high oxygen selectivities (adsorbed OィイD22ィエD2/NィイD22ィエD2 ratio 〜5). These facts indicate that there are more materials with high oxygen selectivities than expected and they are suitable to the adsorbents used for production of oxygen from air with low cost.
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