Degradasi Gliserol menjadi Produk Kimia Antara (chemical intermediate product) pada Kondisi Dekat Air Superkritis

Kurnia R, Evy and Anggraeni, Yuan and Yuniati, Yuyun and Sumarno, Sumarno Degradasi Gliserol menjadi Produk Kimia Antara (chemical intermediate product) pada Kondisi Dekat Air Superkritis. Degradasi Gliserol menjadi Produk Kimia Antara (chemical intermediate product) pada Kondisi Dekat Air Superkritis. (Submitted)

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    Abstract

    Degradation of glycerol in near-supercritical water is an alternate route to convert glycerol to be other valuable chemical products. This method is fast, cheap, and safe for the environment. The objective of this research was to study the effect of temperature and reaction time to the concentration of chemical intermediate product. The experiment was done in reaction time for 10-60 minutes, temperature range of 200-400oC, under a constant pressure of 250 kgf/ cm2. A solution of glycerol and water (1:10 (w/w)) was put in a batch reactor. System was pressurized and heated until a desired pressure and temperature. When reaction time was reached, the reaction was suddenly stopped by cooling the reactor. Liquid product was analyzed using Gas Chromatography. The main products of glycerol degradation were acetaldehyde, methanol, and ethanol. The result showed that acetaldehyde started to be formed at 200oC, while methanol and ethanol were formed at 250oC and 300oC respectively. When temperature reached 350oC, concentration of acetaldehyde increased drastically then decreased at 400oC. On the other hand, concentration of alcohol products increased with temperature. Below critical point, concentration of all the products increased with reaction time, but when it was 400oC they got increasing maximum at the 40th minute. Keywords: degradation, glycerol, chemical intermediate product, supercritical water

    Item Type: Article
    Subjects: 600 Teknologi
    Divisions: Fakultas Teknologi Industri > Teknik Kimia
    Depositing User: Wikan Pinandhito
    Date Deposited: 11 Jul 2011 08:33
    Last Modified: 11 Jul 2011 08:33
    URI: http://repository.upnyk.ac.id/id/eprint/550

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