CP/MAS 13C-NMR Analysis of Coals and their Solid Products in a Flash Hydropyrolysis.
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概要
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The coal gasification process in a flash hydropyrolysis was investi-gated by comparing CP/MAS <SUP>13</SUP>C-NMR spectra of the raw coal and its solid product (char).<BR>The results with Loy Yang coal indicated that aliphatic carbon and oxygen bonded to aromatic carbon initially existed in coal disappeared from chars produced at temperatures higher than 705°C, and that the amount of aromatic carbon remained constant among coal and chars at 705, 725 and 750°C, and then it was progressively reduced as gasification temperature was raised (800, 875 and 950°C).<BR>Reduction of aromatic carbon in pyrolysis at about 900°C occurred with similar rates among eight coals ranging from lignite to low-rank bituminous coal excespt for two coals.
- 一般社団法人 日本エネルギー学会の論文
一般社団法人 日本エネルギー学会 | 論文
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