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Kinetic Overpotential Hydrogen

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Principles of Extractive Metallurgy. New York : Gordon and Breach, Science Publishers, Ltd H. S. Ray A. Ghosh. 1991. Principles of Extractive Metallurgy : ... – PowerPoint PPT presentation

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Title: Kinetic Overpotential Hydrogen


1
Kinetic Overpotential Hydrogen
Revisi
  • Rommy Iman Sulaiman
  • 071430
  • 9 April 2010

2
Outline
  • Kinetic
  • Overpotential Hydrogen
  • Kinetic Overpotential Hydrogen
  • Reference

3
Kinetic
  • Kinetic (Kinetika) membahas tentang laju reaksi
    dan mekanisme terjadinya reaksi

4
Overpotential Hydrogen
  • Adanya gerakan ion (kinetik) yang lambat
    menyebabkan potensial yang menyimpang dari nilai
    Nernst
  • Pada Hydrogen 2H 2e- H2

5
Kinetic Overpotential Hydrogen
  • Mass Transfer-Controlled Reaction-Concentration
    Overpotential

6
Kinetic Overpotential Hydrogen
  • Interfacial Reaction Rate Control-Activation
    Overpotential

7
Kinetic Overpotential Hydrogen
8
Kinetic Overpotential Hydrogen
  • Difusi H3O dari Bulk Solution menuju double
    layer
  • H3O melewati Double Layer
  • Dehidrasi ion
  • H3O H2O e
  • a) Electrochemical
  • H3O M e- ? M-H H2O (pelepasan
    ion)
  • b) Pembentukan molekul-molekul Hydrogen
  • 2 M-H ? 2M H2

9
Kinetic Overpotential Hydrogen
  • Desorpsi gas H2 dari elektroda
  • Difusi gas H2 keluar/menjauhi elektroda

10
Reference
  • Habashi, Fathi. Principles of Extractive
    Metallurgy. New York Gordon and Breach, Science
    Publishers, Ltd
  • H. S. Ray ? A. Ghosh. 1991. Principles of
    Extractive Metallurgy New Age International
  • Rosenqvist, Terkel. 1983. Principles of
    Extractive Metallurgy . Tokyo McGraw Hill
    Kogakusha Ltd.

11
  • Terima Kasih
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