Carbonaceous Mesophase Formation and Molecular Composition of Petroleum Feedstocks
作者： Semih Eser
DOI: 10.1007/978-3-662-03569-6_12
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摘要: Carbonaceous mesophase forms during carbonization of some organic compounds, thermoplastic polymers, petroleum feedstocks, and certain coals coal-derived materials. It is an intermediate, anisotropic phase with properties similar to those nematic liquid crystals. The formation this plastic at relatively low temperatures (400–500°C) critically important in determining the (e.g. strength, reactivity, conductivity) carbon materials graphite electrodes) derived from resulting semi-cokes or cokes. A study has been undertaken relate molecular composition feedstocks degree development carbonization. Gas chromatography/mass spectrometry high performance chromatography a photodiode array detector were used analyze fluid catalytic cracking (FCC) decant oils thermal tars gas oils. Automated manual point counting techniques conjunction polarized-light microscopy measure development, expressed as optical texture index Correlations observed between indices cokes feedstocks. For example, concentrations methylated pyrenes appear lead which produces highly cokes, i.e. quality needle
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