Evaluation of the Kinetic Parameters of First-Order Reactions Following Charge Transfer by Applying a Long-Path-Length Spectroelectrochemical Technique

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抄録

A long-path-length spectroelectrochemical technique was developed for investigating the EC mechanism and evaluating the kinetic parameters under a semi-infinite condition. The chronoabsorbances were obtained by a digital simulation method. Simulated results showed that the shapes of A-t curves are markedly dependent upon the relative values of the molar absorptivities of spieces A, B and C. When εA=0, εB/ εC≥5 or εC=0, 0≤εA/εB<0.5, the system absorbance passes through a maximum (Amaxt) interestedly. While εB=0, 0.2≤εA/εC≤1, there appears a minimum (Amint). Either Amaxt or Amint is closely related to the chemical reactions following charge transfer. When there is Amaxt at moment tmax in the A-t curve, increasing the value of the first-order rate constant (k1) causes Amaxt and tmax to decrease; while increasing the diffusion coefficient (DB) for species B causes Amaxt to increase, but tmax to decrease. This opposite effect enables us evaluate k1 and DB both simultaneously and precisely. The elctrooxidation of p-aminophenol in an acid aqua solution was experimentally investigated by a long-path-length spectroelectrochemical technique. The pseudo first-order rate constant and the diffusion coefficient for the electrooxidized intermediate quinone imine were successfully evaluated by this method.

収録刊行物

  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry

    Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 16(1), 87-91, 2000-01-10

    社団法人 日本分析化学会

参考文献:  17件中 1-17件 を表示

  • <no title>

    VASSOS B. H.

    Electroanalytical Chemistry, 1983

    被引用文献1件

  • <no title>

    GRANT G. C.

    J. Electroanal. Chem. 24, 11, 1970

    被引用文献2件

  • <no title>

    MCCREERY R. L.

    Anal.Chem. 49, 206, 1977

    被引用文献1件

  • <no title>

    BLUBAUGH E. A.

    Anal.Chem. 51, 561, 1979

    被引用文献1件

  • <no title>

    XIE Y.

    Electrochim.Acta 40, 1177, 1995

    被引用文献1件

  • <no title>

    MCCREERY R. L.

    Anal.Chem. 51, 749, 1979

    被引用文献1件

  • <no title>

    ZAK J.

    Anal.Chem. 55, 2219, 1983

    被引用文献1件

  • <no title>

    NAGY N. R.

    Anal.Chem. 63, 2668, 1991

    被引用文献1件

  • <no title>

    WEI W. Z.

    J.Electroanal.Chem. 328, 9, 1992

    被引用文献1件

  • <no title>

    DONG S.

    J.Electroanal.Chem. 335, 197, 1992

    被引用文献1件

  • <no title>

    HEERING H. A.

    J.Electroanal.Chem. 364, 235, 1994

    被引用文献1件

  • <no title>

    WEI W. Z.

    Electrochim.Acta 40, 1057, 1995

    被引用文献1件

  • <no title>

    SCHWARZ W. M.

    J.Phys.Chem. 69, 30, 1965

    被引用文献1件

  • <no title>

    BARD A. J.

    Electrochemical Methods, 1980

    被引用文献31件

  • <no title>

    FELDBERG S. W.

    J.Electroanal.Chem. 3, 199, 1969

    被引用文献1件

  • <no title>

    WEI W. Z.

    J.Electroanal.Chem. 334, 1, 1992

    被引用文献1件

  • <no title>

    TESTA A. C.

    Anal.Chem. 32, 1512, 1960

    被引用文献1件

各種コード

  • NII論文ID(NAID)
    10004704816
  • NII書誌ID(NCID)
    AA10500785
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09106340
  • NDL 記事登録ID
    4966685
  • NDL 雑誌分類
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL 請求記号
    Z54-F482
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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