A study of the spin-lattice relaxation time, T1, of coal-derived oil.

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概要

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• The spin-lattice relaxation time, <I>T</I><SUB>1</SUB>, of carbons was measured for various types of carbons in ring-type fractions separated from coal-derived oil. The <I>T</I><SUB>1</SUB> for most carbons in the coal-derived oil was less than 2 s because of the existence of free radicals, while the <I>T</I><SUB>1</SUB>'s of aromatic non-protonated carbons in the monocyclic and bicyclic aromatics fractions were approximately 12–15 s. The effects of a relaxation reagent on the <I>T</I><SUB>1</SUB> were also discussed.

• 公益社団法人 日本化学会の論文

著者

• Yokoyama Susumu

  Faculty of Engineering Hokkaido University

• MAEKAWA YOSUKE

  Government Industrial Development Laboratory

• Uchino Hiroyuki

  Faculty of Engineering, Hokkaido University

• Yoshida Tadashi

  Government Industrial Development Laboratory

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