Kinetic Overpotential Hydrogen

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Presentation transcript:

Kinetic Overpotential Hydrogen Revisi Rommy Iman Sulaiman 071430 9 April 2010

Outline Kinetic Overpotential Hydrogen Kinetic Overpotential Hydrogen Reference

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

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

Kinetic Overpotential Hydrogen Mass Transfer-Controlled Reaction- Concentration Overpotential

Kinetic Overpotential Hydrogen Interfacial Reaction Rate Control- Activation Overpotential

Kinetic Overpotential Hydrogen

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

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

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.

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