Title of article
Perbandingan Hasil Pengoksidaan Elektrokimia Etanol dalam Larutan Alkali yang Menggunakan Elektrod Platinum-Polivinilklorida (Pt-PVC) dan Kepingan Logam Pt
Author/Authors
RIYANTO Universiti Kebangsaan Malaysia - Fakulti Sains dan Teknologi - Makmal Elektrosintesis, Pusat Pengajian Sains Kimia dan Teknologi Makanan, Malaysia , SALIMON, JUMAT Universiti Kebangsaan Malaysia - Fakulti Sains dan Teknologi - Makmal Elektrosintesis, Pusat Pengajian Sains Kimia dan Teknologi Makanan, Malaysia , OTHMAN, MOHAMED ROZALI Universiti Kebangsaan Malaysia - Fakulti Sains dan Teknologi - Makmal Elektrosintesis, Pusat Pengajian Sains Kimia dan Teknologi Makanan, Malaysia
From page
175
To page
181
Abstract
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 PVC, 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.
Keywords
Pt , PVC , elektrooxidation , ethanol , acetic acid
Record number
2554496
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