| Project/Area Number |
14550785
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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 | Chiba University |
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Principal Investigator |
HOSHI Nagahiro Chiba University, Graduate School of Science and Technology, Associate Professor, 大学院・自然科学研究科, 助教授 (30238729)
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| Project Period (FY) |
2002 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2003: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2002: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | Dechlorination / Chlorobenzene / Single crystal of platinum / Single crystal of silver / Mediator / Acetonitrile / Nanostructure / Benzene / 基本指数面 |
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| Research Abstract |
Structural effects on the rate of the dechlorination of chlorobenzene have been studied using the low index planes of platinum and silver in acetonilrile solution. Chlorobenzene is electrolyzed on platinum electrodes using naphthalene as a mediator at 2.94 V (Ag/Ag^+). Benzene is produced as a main product. A reaction via a mediator does not depend on electrodes generally, because it is a homogeneous catalytic reaction. Surface structure, however, affects the partial current density of benzene (j_<C6H6>): Pt(111) < Pt(110) Pt(100). On silver electrodes, j_<C6H6> shows no structural effect in the reaction using a mediator. Electrolysis without a mediator gives the same structural effect as that with a mediator on platinum electrodes, whereas no silver electrode reduces chlorobenzene at 2.94 V (Agf Ag^+) without a mediator. The direct reduction path of chlorobenzene causes the anomalous structural effect on the reaction with a mediator on platinum electrodes. Silver electrodes reduce chlorobenzene to benzene at more negative potential -3.17 V (Ag/Ag^+) without a mediator. The value. of j_<C6H6> depends on the surface structure as follows : Ag(110) N Ag(111) < Ag(100). The (100) terrace has high activity for the dechlorination of chlorobenzene.
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