N.m.r. characterization of coal pyrolysis products
作者： F MIKNIS , T TURNER , L ENNEN , D NETZEL
DOI: 10.1016/0016-2361(88)90077-4
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摘要: Abstract Isothermal pyrolysis studies were conducted on an Illinois No. 6 and a Wyodak coal at 375 °C, 400 °C 425 using fluidized sandbath reactor system. The amount of converted to tar, gas residue was determined for different reaction durations each temperature. Solid- liquid-state 13 C n.m.r. techniques used characterize the tars produced during varying stages pyrolysis. Solid-state measurements showed that reached its limiting aromaticity value fairly early decomposition, mass basis, aromatic carbon in remained relatively constant aliphatic loss similar total loss. products found increase by 13% 16% over starting material coal, respectively. aromatized produce 37% 35% coal.
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