Linking Thermoplastic Development and Swelling with Molecular Weight Changes of a Coking Coal and Its Pyrolysis Products
作者： Quang Anh Tran , Rohan Stanger , Wei Xie , Nathan Smith , John Lucas
DOI: 10.1021/ACS.ENERGYFUELS.6B00324
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摘要: The thermoplastic development of an Australian coking coal was investigated by linking thermal swelling with changes in molecular weight its pyrolysis products. Coal together volatiles evolution and characterization generated (including volatile tar light gases). distributions solvent extracts were measured using laser desorption/ionization time flight mass spectroscopy (LDI-TOF-MS). Solvent extraction (by acetone tetrahydrofuran (THF)) initially used on the raw to aid interpretation thermoswelling volumetric expansion measurements. removal ∼2% solvent-soluble matter from (the mobile phase) reduced extent during heating up 22% (from 86% down 68% 64% for acetone- THF-residues, respectively). Volatile release after treatment remained unaffected. This suggested that majority coal’s behavior could be attributed to...
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