頁籤選單縮合
題名 | Paired Electrolysis of Acetone to Produce Diacetone Alcohol in a Divided Cell= |
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作者 | 蔡明瞭; |
期刊 | 勤益學報 |
出版日期 | 19931200 |
卷期 | 11 1993.12[民82.12] |
頁次 | 頁93-104 |
分類號 | 468 |
語文 | eng |
關鍵詞 | |
中文摘要 | 本實驗乃在一隔離槽中進行,以陰陽極組對同時電解產生氫質子及氫氧 根離子,進而催化丙酮形成二丙酮醇,探討各種影響組對電解丙酮反應的因素。 結果證明,間斷式電解法較連續式佳,且陰極槽中之反應速率較陽極槽中之縮合 反應快。當丙酮濃度由2M增加至8M時,二丙酮醇的產率由100gF��1增加至800gF ��1,溫度為30℃時8M的丙八酮及0.2M NaCl濃度下,最佳產率為1300gF��1。 |
英文摘要 | Paired electrolysis of acetone in a divided cell was carried out in this study.Protone H and OH anion were simultaneously generated at anode and cathode,respectively, by paired electrolysis. Acetone was catalytically condensed to formdiacetone alcohol (daa). The factors which affected both anodic and cathodic reactions were explored. The results indicate that interrupt electrolysis is betterthan that of continuous electrolysis. The reaction rate of aldol condensation atcathode is faster than that at anode. The yield of daa increase from 100 to 800g/F with increasing concentration of acetone from 2 to 8 M. The selectivity ofdaa almost reaches 100 and the yeild of daa was 120 g/F during 120 coulelectricity passed. |
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