| 第 36 卷第 3 期 |  | Vol. 36 No. 3 | | 2006 年 6 月 | Jun 2006 |
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所屬欄目：有機合成原料
粉煤灰復合固體酸催化合成乳酸正丁酯的研究 |
| 古緒鵬; 冷玲波(安徽工業(yè)大學(xué)化學(xué)與化工學(xué)院; 安徽馬鞍山) |
| 摘 要：以乳酸和丁醇為原料,在粉煤灰復合固體酸的催化下,對合成乳酸正丁酯的工藝進(jìn)行了實(shí)驗研究,其優(yōu)惠制備條件為:浸泡硫酸濃度為0.5mol/L,浸泡時(shí)間為6h,焙燒溫度為550℃,焙燒時(shí)間為3h,優(yōu)化酯化反應條件為:醇酸摩爾比為3∶1,催化劑的用量為乳酸質(zhì)量的3.0%,反應時(shí)間為2h,酯化率可達98.8%。 |
| 關(guān)鍵詞：乳酸正丁酯; 催化劑; 固體酸; 粉煤灰 |
| 中圖分類(lèi)號：TQ225.24 文獻標識碼：A 文章編號：1009-9212(2006)03-0059-03 |
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| Synthesis of Butyl Lactate with Fly Ash Composite Solid Acid as Catalyst |
| GU Xu-peng; LENG Ling-bo（School of Chemistry and Chemical Engineering; Anhui University of Technology; Ma'anshan 243002; China） |
| Abstract：Butyl lactate was synthesized starting from lactic acid and butanol over a composite solid acid as catalyst.Experimental results indicated that the optimal preparation conditions were obtained as 0.5 mol/L H2SO4,immersing time 6 h and calcination temperature 550℃.Under the optimal conditions such as butyl alcohol-lactic acid molar ratio 3 ∶ 1,percentage amount of catalyst 3.0% and reaction time 2 h,the esterification rate reached 98.8%. |
| Key words：n-butyl lactate; catalyst; solid acid; fly ash |
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基金項目：安徽省教育廳自然基金項目(2006kj106B)
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收稿日期：2005-12-02
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