In electrochemical reactions, anodic reactions are reactions that release electrons and are all oxidation reactions, but the term anodic oxidation is used somewhat ambiguously in the following sense: (1) Reactions that increase the ionic valence: Fe(CN) 6 4− → Fe(CN) 6 3− + e (2) Anionic polymerization reaction: 2SO 4 2− → S 2 O 8 2− + 2e (3) Reaction in which oxygen increases for the substance of interest: ClO 3 - + H 2 O → ClO 4 - + 2H + 2e 2Fe + 3H 2 O → Fe 2 O 3 + 6H + + 6e (4) Oxidation of organic matter: 2CH 3 COO - → C 2 H 6 + 2CO 2 + 2e Anodic dissolution of metals (Fe → Fe 2+ + 2e) and oxygen evolution (4OH - → O 2 + 2H 2 O + 4e) are not usually referred to as anodic oxidation. Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition |
電気化学反応では,アノード反応(陽極反応)は電子を放出する反応であり,すべて酸化反応になるが,陽極酸化という用語は多少あいまいではあるが次の意味で用いられる. (1) イオン価の増大する反応: Fe(CN)64- → Fe(CN)63- + e (2) アニオンの重合反応: 2SO42- → S2O82- + 2e (3) 着目する物質について酸素の増加する反応: ClO3- + H2O → ClO4- + 2H+ + 2e 2Fe + 3H2O → Fe2O3 + 6H+ + 6e (4) 有機物の酸化: 2CH3COO- → C2H6 + 2CO2 + 2e 金属のアノード溶解(Fe → Fe2+ + 2e),酸素発生(4OH- → O2 + 2H2O + 4e)などは,通常,陽極酸化とはよばない. 出典 森北出版「化学辞典(第2版)」化学辞典 第2版について 情報 |
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