| アイテムタイプ |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2009-07-23 |
| タイトル |
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タイトル |
酸性雨モデルとしての希硝酸によるアゾ染料の異常退色 |
| タイトル |
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タイトル |
Abnormal Decolorization of Azo Dyes by Dilute Nitric Acid as Acid Rain Model |
|
言語 |
en |
| 言語 |
|
|
言語 |
jpn |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
| ID登録 |
|
|
ID登録 |
10.14993/00000451 |
|
ID登録タイプ |
JaLC |
| 著者 |
中山, 直美
木戸, 紀子
瀬口, 和義
Nakayama, Naomi
Kido, Noriko
Seguchi, Kazuyoshi
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
Decolorization of azo dyes by dilute nitric acid as acid rain model was pursued spectrophotometrically at 30℃. In the reaction of 4-arylazo-1-naphthols or 4-arylazoaniline, an induction period and then an increase in the rate were observed. Quantitative analysis of nitrogen dioxide by the Jacobs' method showed that the concentration of nitrogen dioxide increased remarkably as the decolorization reaction proceeded. The addition of a catalytic amount of sodium nitrite (source of nitrogen dioxide) to the dye-dilute nitric acid solution caused enhanced decolorization. Furthermore, 2,4-dinitro-1-naphthol (19% yield), 1,4-naphthoquinone (19% yield), and aryl diazonium salt (89% yield) were identified as main decomposition products of 4-arylazo-1-naphthols. From these results, the mechanism for the abnormal decolorization reaction was elucidated from autocatalyzed reactions by nitrogen dioxide as follows: (1) nitroso-dediazotization by nitrogen dioxide, (2) oxidation of the nitroso compounds by nitric acid, and regeneration of nitrogen dioxide. |
| 書誌情報 |
武庫川女子大学紀要. 自然科学編
巻 53,
p. 29-35,
発行日 2006-03-31
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| ISSN |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0916-3123 |
| 書誌レコードID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN10187277 |
P29-35.pdf (459.8 kB)
