ESR and FT-IR studies for coal structures. Characteristics of Japanese Coals.

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概要

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• The ESR parameters (spin concentration, line width, <I>g</I>-value, and spin-lattice relaxation time) of various coals mined in Japan and in many foreign countries have been measured. Low spin concentrations, broad line widths, and long spin-lattice relaxation times have been recognized as characteristics of Japanese bituminous coals (e.g., Akabira, Miike, and Shin-yubari coals) compared with the foreign coals having similar carbon contents. The origins of these differences were interpreted by the aid of the FT-IR spectra. Low fractions of aromatic carbon and rich aliphatic groups of Japanese bituminous coals are closely related to the characteristics in the ESR parameters.

• 公益社団法人 日本化学会の論文

著者

• IINO MASASHI

  Chemical Engineering Laboratory, Tokyo Metropolitan University

• Ito Osamu

  Chemical Research Institute of Non-aqueous Solutions, Tohoku University

• Iino Masashi

  Chemical Research Institute of Nonaqueous Solutions, Tohoku University

• Seki Hiroyuki

  Chemical Research Institute of Nonaqueous Solutions, Tohoku University

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