Ternary Lamellar Compounds of Graphite with Aluminum Bromide and Bromine
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概要
- 論文の詳細を見る
Graphite was allowed to react with binary reactants of aluminum bromide and bromine. The formation of ternary lamellar compounds was observed. A change in the activity of the reactants in the system gave three compounds I, II, and III with different contents of aluminum bromide and bromine. Compound I, obtained as the reaction product of graphite with the solution of bromine saturated with aluminum bromide, has a composition of C<SUB>9</SUB>AlBr<SUB>3</SUB>·Br<SUB>2</SUB>, and a lamellar structure of the first stage with <I>I<SUB>c</SUB></I> of 10.24 Å. Compound II, which has the lowest bromine content, has a composition of C<SUB>24</SUB>AlBr<SUB>3</SUB>·Br<SUB>0.3</SUB> and a lamellar structure of the second stage with <I>I<SUB>c</SUB></I> of 13.35 Å. Compound III, obtained at a bromine activity higher than that for compound I, has a non-stoichiometric composition of about C<SUB>5–6</SUB>Br(AlBr<SUB>3</SUB>)<SUB>0.2</SUB>, and a structure of the second stage with <I>I<SUB>c</SUB></I> from 13.58 to 13.72 Å. The phase diagram of the ternary system was derived. Compounds I and III have higher bromine contents than C<SUB>8</SUB>Br, which is the saturation compound of graphite-bromine system. This is supposed to be due to the stabilization of bromine by the coexistence of aluminum bromide.
- 公益社団法人 日本化学会の論文
著者
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Takahashi Yoichi
Department Of Applied Chemistry Chuo University
-
Mukaibo Takashi
Department of Applied Chemistry Faculty of Engineering The University of Tokyo
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Sasa Tadashi
Department of Nuclear Engineering, The University of Tokyo
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