Perbandingan Hasil Pengoksidan Elektrokimia Etanol dalam Larutan Alkali yang Menggunakan Elektrod Platinum-Polivinilklorida (Pt-PVC) dan Kepingan Logam Pt = Comparison of Electrooxidation Yield of Ethanol in Alkaline Medium using Platinum-Polyvinyl chloride (Pt-PVC) and Pt Metal Foil Electrodes
A modification of platinum-polyvinyl chloride (Pt-PVC) electrode for the electrooxidation of ethanol in alkaline solution has been investigated. Pt-PVC electrode was prepared by mixed together platinum metal powder with PVC (95:5 w/w), homogenized, added with tetrahydrofuran to dissolved the dried...
| Format: | Article |
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| Language: | English |
| Published: |
Universiti Kebangsaan Malaysia
2007
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| Online Access: | http://journalarticle.ukm.my/108/ http://journalarticle.ukm.my/108/ http://journalarticle.ukm.my/108/1/1.pdf |
| Summary: | A modification of platinum-polyvinyl chloride (Pt-PVC) electrode for the electrooxidation of ethanol in alkaline solution
has been investigated. Pt-PVC electrode was prepared by mixed together platinum metal powder with PVC (95:5 w/w),
homogenized, added with tetrahydrofuran to dissolved the dried, put into 1 cm diameter mould and press at 10 ton/cm2.
Studies on electrochemicals behavior for Pt-PVC electrode were carried out using cyclic voltammetry and chronocoulometry
modes. The higher current density for hydroxide adsorption peak were recorded, 0.25 mA/cm2 and 85 mA/cm2 respectively
when Pt-PVC electrode was used compared to Pt electrode. This indicates that Pt-PVC electrode gives better conductivity
and electrochemical behavior to electrooxidation of ethanol in KOH compared to Pt electrode. Result obtained shows the
used of Pt-PVC electrode for electrooxidation of 0.25 M ethanol in 1.0 M KOH supporting electrolyte increased the
percentage of acetic acid produced compared to Pt electrode. |
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