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All Journal Indonesian Journal of Chemistry
Phiciato Phiciato
TEKMIRA Research Center for Minerals and Coal, Ministry of Energy and Mineral, Resources of the Republic of Indonesia, Jl. Jenderal Sudirman No. 623, Bandung 40211, Indonesia
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Heat Treatment of Pitch Obtained from Atmospheric Fixed-Bed Coal Gasification Phiciato Phiciato; Ika Monika; Arie Hardian
Indonesian Journal of Chemistry Vol 18, No 3 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (320.792 KB) | DOI: 10.22146/ijc.31731

Abstract

A medium temperature pitch obtained from atmospheric fixed-bed gasifier was distilled at a various time (1, 2, 3 and 4 h) to induce polymerization and the results were compared with a commercial pitch. Aromaticity level of pitches was examined using infrared spectroscopy, elemental analysis and simultaneous thermal analysis (TG-DSC). Longer heating time promoted lower moisture content, lower residue yield, higher insoluble fractions, as well as higher ash and carbon content. Although prolonged heat treatments lead to higher aromatization, there was no significant change in aromatization for heat treatment longer than 1 h. The index of aromaticity measured by using elemental analysis was ranged between 0.47 to 1.01, while the result from FTIR spectra showed stagnant value at 0.52. These values were slightly higher than that of pressurized Sasol-Lurgi gasification pitch (0.27).
Co-Authors Arie Hardian Ika Monika