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日本エネルギー学会誌 Vol. 73 (1994), No. 4

ISIJ International
belloff
オンライン版ISSN: 1882-6121
冊子版ISSN: 0916-8753
発行機関: The Japan Institute of Energy

Backnumber

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キーワードランキング

21 Dec. (Last 30 Days)

日本エネルギー学会誌 Vol. 73 (1994), No. 4

石炭および関連物質の化学構造解析のための炭化水素および含酸素化合物の部分構造と13C シフト範囲の図表化

早水 紀久子, 柳沢 勝, 矢部 篤子, 杉本 義一, 山本 修

pp. 267-278

DOI:

10.3775/jie.73.267

抄録

The 13C chemical shift ranges are representated graphically for the carbon types and the α -circumstances in hydrocarbons and oxygen-containing compounds. The main purpose of the charts is simple and easy utilization of the correlations between 13C shift range and the substructure for the structural analysis of the natural products such as coals, soils, lignins and their reaction products.
The 13C NMR spectra were observed for Ishikari peat, the extracted residue, the extracted oil, a lignin and a cellulose. In the solid state, CPMAS and the dipolar -ing spectra were observed, and the chemical structures of Ishikari peat were discussed by using the charts. The most different points in structure of Ishikari peat from woods are the inclusion of the alkyl chain structures.

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石炭および関連物質の化学構造解析のための炭化水素および含酸素化合物の部分構造と13C シフト範囲の図表化

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Ris

熱分解生成物による石炭のコークス化性評価

朝田 真吾, 西村 勝, 上村 信夫

pp. 279-289

DOI:

10.3775/jie.73.279

抄録

In order to evaluate coal for metallugical coke, thermogravimetric analysis, quantification of gaseous products during pyrolysis, caking and coking properties of different rank of coals including air oxidized were investigated. Following results were obtained.
(1) Degree of oxidation of coals can be detected by monitoring the change of CO, CO2 and CH4 in pyrolytic gases.
(2) The higher was the CH4 concentration in the gases, the higher was the resolidified temperature with Gieseler plastometry become. The developement of the optical anisotropy in coke texture was implicated with CH4 evolution.
(3) Coals with the large extent of thermal weight loss and the higher ratio of CH4 in pyrolytic gases showed generally excellent plasticity, although the coal gave cokes with higher porosity.
Coking properties of coals were discussed from the view of the structural aspect. The quantification of thermal weight loss and the concentration of CH4 in pyrolytic gases were introduced as the criteria of coking characteristics.

mendeley

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熱分解生成物による石炭のコークス化性評価

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21 Dec. (Last 30 Days)

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