| Project/Area Number |
06555264
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
工業物理化学
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| Research Institution | Niihama Naitonal College of Technology |
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Principal Investigator |
SUGIMOTO Eisuke Niihama National Colledge of Technology, Department of Industial Chemisty, Professor, 工業化学科, 教授 (10044091)
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| Co-Investigator(Kenkyū-buntansha) |
OKAJIMA Yasuhiro Sumitomo Metal Mining Co., 研究所, 研究所長
MORI Yoshiaki Sumitomo Metal Mining Co., General Manager, 研究所, 研究員
ONISHI Kouji Niihama National College of Technology, Associate Professor, 電気工学科, 助教授 (30214175)
AONO Hiromichi Niihama National College of Technology, Research Associate, 工業化学科, 助手 (00184052)
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| Project Period (FY) |
1994 – 1995
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| Project Status |
Completed (Fiscal Year 1995)
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| Budget Amount *help |
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1995: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1994: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Keywords | CHLORINE / GAS SENSOR / SOLID ELECTROLYTE / BARIUM CHLORIDE / ELECTROMOTIVE FORCE |
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| Research Abstract |
Chlorine gas is used in large quantities for industrial processes. Its emission has become a serious problem, causing air pollution and acid rain in recent years. The detection and regulation of Cl_2 gas are urgent concerns. The effects of BaO contamination on the behavior of a Cl_2 gas sensor using a 0.97BaCl_2 0.03KCl solid electrolyte were investigated. The addition of BaO to the electrolyte was found to produced unfavorable effects on both the measuring electrode and the reference through a side reaciton such as BaO + Cl_2 * BaCl_2 + (1/2) O_2.The presence of BaO in the vicinity of the measuring electrode resulted in decreases in the EMF and rate of response especially by lowering the Cl_2 gas concentration below a few tens ppm. Its presence near the barium oxides on the reference electrode, on the other hand, reslted in the upward deviation of the EMF over the entire range of Cl_2 concentration. The probe prepared in vacuo, free of such BaO contamination, gave EMFs in good agreement with the theoretical ones for Cl_2 gas concentrations between 10 ppm and 1000 ppm.
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