| Project/Area Number |
07651000
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
工業物理化学
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| Research Institution | KYUSHU INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
NOGAMI Gyoichi Dept.of Electrical Eng.KYUSHU INSTITUTE OF TECHNOLOGY Professor, 工学部, 教授 (00039116)
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| Co-Investigator(Kenkyū-buntansha) |
SHIRATSUCHI Ryuichi Dept.o Electrical Eng.KYUSHU INSTITUTE OF TECHNOLOGY , Research assistant, 工学部, 助手 (10216195)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1996: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1995: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | Carbon dioxide / Pulsed electrolysis / Selectivity of electrode reactions / Stability of electrodes |
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| Research Abstract |
The objective of the present research is (1) to obtain the selectivity of reduction products of carbon dioxides and (2) to develop a new technique for protecting the degradation of electrodes taking place during long-term electrolysis. The proposed technique is to use pulsed electrolysis in which the following four parameters can be chosen to obtain optimum experimental condition : anodic bias V_a and cathodic bias V_c and their durations T_a and T_c. Project goal mentioned above has been almost fully attained.
The selectivity of reduction products :
Cu electrodes : Relative yields of methane and ethylene to hydrogen could be increased by optimizing the anodic bias. Relative yields of methane to ethylene could be also changed by anodic bias.
Ag electrodes : This electrode is known to predominantly produce carbon monooxide as a reduction product of carbon dioxides under a potentio/galvano static electrolysis. In the pulsed method, however, methane and ethylene can be also produced under optimized bias conditions. In addition, ethanol can be also produced at different anodic bias from that at which CH_4 and C_2H_4 are predominantly produced.
Stability of electrodes :
Long term electrolysis could be performed without any degradation of electrodes as well as without deterioration of the selectivity of electrode reaction.
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