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題名 | 離子液體異多體酸在三醋酸甘油酯合成之應用研究=Study on the Synthesis of Glycerol Triacetate Using Ionic Liquid Heteropoly Acid |
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作者 | 黃銘郁; 張仁俊; 林建琛; 吳榮宗; 吳培豪; 劉尚斌; | 書刊名 | 石油季刊 |
卷期 | 50:2 2014.06[民103.06] |
頁次 | 頁27-40 |
分類號 | 468.8 |
關鍵詞 | 磷鎢異多體酸; 砒碇丙基磺酸鹽; 離子液體異多體酸; 三醋酸甘油酯; 酯化反應; Tungstophosphoric acid; TPA; Pyridinium propyl sulfobetaine; PPS; Glycerol triacetate; Triacetine; Ionic liquid heteropoly acid; IL-HPA; Esterification; |
語文 | 中文(Chinese) |
中文摘要 | 本論文主要探討利用耐水離子液體磷鎢異多體酸為觸媒,合成三醋酸甘油酯之方法,其中離子液體觸媒之製備係利用有機含氮化合物如砒碇,與烷基磺酸內酯作用,生成白色兩性化合物固體(Zwitterion),經純化乾燥後,再與磷鎢異多體酸作用,得到透明黏稠狀之耐水酸性離子液體。利用此類觸媒,可有效進行甘油與醋酸之乙酯化反應,產製三醋酸甘油酯,反應後抽真空回收醋酸,並去除水份,之後靜置使產物與離子液體分層,取出上層產物,下層之離子液體可重複使用,進行乙酯化反應。改變反應條件,並利用帶水劑不斷除去反應產物水,可使反應接近完全,得到相當高純度之三醋酸甘油酯。 |
英文摘要 | This article will be investigating the catalytic performances for esterification of glycerol with acetic acid using water-tolerable ionic liquid heteropoly acid (IL-HPA) catalysts. The IL-HPA catalysts were prepared by first synthesizing the ionic liquids by reacting organic nitrogen compounds such as pyridine with alkyl sultone. After purification and drying, these zwitterion compounds (PPS or PSPy) were further reacted with tungstophosphoric acid (TPA) to obtain the PPS-TPA catalysts, which showed superior activity for esterification of glycol with acetic acid. Upon completing the reaction, subsequent recovery of acetic acid and removal of water may be achieved by heating the system under a vacuum. As a result, two distinct layers were formed after setting; the products of ester could easily be withdrawn from the upper layer, whilst the ionic liquid at the bottom layer could be recycled. By varying the reaction conditions while continuously removing water out of the system by a proper agent, a nearly complete conversion of glycerol to triacetine was achieved. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。