| 第 33 卷第 4 期 |  | Vol. 33 No. 4 | | 2003 年 8 月 | Aug 2003 |
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所屬欄目：其它
苯甲醛直接氯化法合成間氯苯甲醛 |
| 童剛生; 楊運泉; 段正康(湘潭大學(xué)化工學(xué)院; 湖南湘潭) |
| 摘 要：以苯甲醛為原料直接氯化合成間氯苯甲醛,通過(guò)對幾種可能的催化劑進(jìn)行比較,選擇了無(wú)水三氯化鋁作為該氯化反應的催化劑;用單因素方法和正交實(shí)驗考察了原料液濃度、催化劑用量、反應溫度和反應時(shí)間對氯化反應的影響,得到了氯化反應優(yōu)惠條件:苯甲醛1.33mol/L,無(wú)水三氯化鋁1.70mol/L,反應時(shí)間30min,反應溫度50℃。苯甲醛的轉化率≥90%,間氯苯甲醛的收率≥79%,選擇性為88%,氯化產(chǎn)品中基本無(wú)同分異構體。 |
| 關(guān)鍵詞：苯甲醛; 間氯苯甲醛; 催化氯化 |
| 中圖分類(lèi)號：TQ224.4 文獻標識碼：A 文章編號：1009-9212(2003)04-0031-03 |
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| Studies on the Synthesis of m-Chlorobenzaldehyde from Benzaldehyde by Direct Chlorination |
| TONG Gang sheng; etc.（The Chemical Engneering Department of Xiangtan University; Xiangtan Hunan; 411105; China） |
| Abstract：The synthesis method of m chlorobenzaldehyde from benzaldehyde by direct chlorination was studied. Anhydrous aluminium was picked out as the best catalyst from many kinds of catalysts. By parameters and orthogonal test, the effects of the concentration of raw material, the catalyst, reaction temperature, and reaction time was investigated. The optimized conditions for reaction were obtained as follows: benzaldehyde 1.33 mol·L -1 , anhydrous aluminium 1.70 mol·L -1 , reaction time 30min, reaction te... |
| Key words：benzaldehyde; m chlorobenzaldehyde; catalyzed chlorination |
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收稿日期：2002-10-08
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