2007 Fiscal Year Final Research Report Summary
Research of gas-phase atomic oxygen anions generated from nano-cage material
| Project/Area Number |
15106012
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| Research Category |
Grant-in-Aid for Scientific Research (S)
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| Allocation Type | Single-year Grants |
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| Research Field |
Reaction engineering/Process system
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| Research Institution | National Institute of Advanced Industrial Science and Technology (2007)
Kogakuin University (2005-2006)
The University of Tokyo (2003-2004) |
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Principal Investigator |
NISHIOKA Masateru National Institute of Advanced Industrial Science and Technology, Research Center for Compact Chemical Process, Researcher (00282575)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Mitsuo University of Tokyo, Graduate School of Education/Faculty of Education, Assistant Professor (30361512)
UCHIDA Masaki Kogakuin University, Major of Applied Chemistry and Chemical Engineering, Assistant Professor (10100273)
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| Project Period (FY) |
2003 – 2007
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| Keywords | atomic oxygen radical / O^- / VOC decomposition / atmospheric pressure / negative ion / sterilization / active oxygen spices / O^- water |
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| Research Abstract |
The nanoporous crystal 12CaO・7Al_2O_3 (C12A7) is able to discharge generate strong and high purity oxygen anions (O^-) beam under reduced pressure. Various applications of O^-, such as VOCs gas decompositions, NOx, SOx removal, sterilization are operated under atmospheric pressure. However, the emission of O^- ion or related species under atmospheric pressure have not been evaluated. In this study, the characteristics of negative ion species emissions from the C12A7 membrane-coated on the ceramic heater under atmospheric pressure were investigated by quadrupole mass spectrometry. Negative ion species were confirmed to be emitted even under atmospheric pressure. It was supposed that the detected negative ion clusters, such as O^-(H_2O)_n, O_2^-(H_2O)_n, and CO_4^-(H_2O)_n, were generated by the reaction of negative ions emitted from the heater with impurities in He gas.
The O^- applications were also developed in this study. For the gas phase applications, PFCs, VOCs, NOx and SOx chemical spices can be removed by C12A7. The O^- generated from C12A7 were accelerated an oxidation of these spices, and the reaction temperature were decreased. Applications of liquid phase reaction were also demonstrated. O^- water (OW) was prepared by bubbling of O^-/argon flux into deionized water. The OW could inactivate E. coli, which may be potentially useful in developing a novel approach for the microbial decontamination of food, water or heat-sensitive material.
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Research Products
(30 results)
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[Journal Article] Hydrogen production by steam reforming of ethanol on potassium-doped 12CaO・7Al_2O_3 catalyst2007
Author(s)
Dong, T, Wang, ZX, Yuan, LX, Torimoto, Y, Sadakata, M, Li, QX
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Journal Title
CATALYSIS LETTERS 119
Pages: 29-39
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Hydrogen production by steam reforming of ethanol on potassium-doped 12CaO・7A1_2O_3 catalyst2007
Author(s)
Dong, Ting, Wang, Zhaoxiang, Yuan, Lixia, Torimoto, Youshifumi, Sadakata, Masayoshi, Li, Quanxin
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Journal Title
CATALYSIS LETTERS 119(1-2)
Pages: 29-39
Description
「研究成果報告書概要(欧文)」より
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