咪唑類室溫型離子液體的制備

生物工程論文編號:SW205  論文字數:9908,頁數:22

目錄
中文摘要………………………………………………………………………………………Ⅰ
英文摘要………………………………………………………………………………………Ⅱ
目錄 ……………………………………………………………………………………………Ⅲ
1 緒論 …………………………………………………………………………………………1
 1.1前言   ………………………………………………………………………………1
 1.2 文獻綜述 …………………………………………………………………………2
 1.2.1離子液體研究動態   ……………………………………………………2
 1.2.2離子液體的研究現狀……………………………………………………2
 1.2.3離子液體的應用 …………………………………………………………3
 1.2.4 離子液體的合成方法……………………………………………4
 1.2.5 本論文研究的主要內容 ………………………………………………5
2 實驗部分  ……………………………………………………………………………………6
    2.1 實驗儀器及試劑……………………………………………………………………6
    2.2 產品分析方法………………………………………………………………………6
    2.3 咪唑類離子液體的合成 …………………………………………………………6
      2.4咪唑類離子液體分析 ……………………………………………………………11
 2.4.1 分析條件的建立………………………………………………11
 2.4.2 數據采集及分析………………………………………………12
3 結果與討論   ………………………………………………………………………………14
 3.1正交試驗結果及分析 ……………………………………………………………14
 3.2 實驗結果分析  ……………………………………………………………………14
 3.3 驗證試驗   …………………………………………………………………………14
 3.4結論 …………………………………………………………………………………15
總結與展望……………………………………………………………………………………16
致謝 ……………………………………………………………………………………………17
參考文獻………………………………………………………………………………………18

摘要：離子液體具有呈液態的溫度區間大、溶解范圍廣、沒有顯著的蒸氣壓、良好的穩定性、極性較強且酸性可調、電化學窗口大等優點，在電化學、有機合成催化、生物化學領域都有著廣泛的應用前景。
 本文研究了以1-甲基咪唑和溴乙烷為原料，合成1-乙基-3-甲基咪唑溴鹽。通過反應時間、溫度、投料比等一系列選擇建立了合成l-乙基-3-甲基咪唑溴鹽的最佳工藝，即：反應溫度為50℃，反應時間為6h，l-甲基咪唑與溴乙烷的摩爾比為1:1.2，在此條件下，l-乙基-3-甲基咪唑溴鹽的收率為92.73%，產品純度用HPLC分析為97.85%，并采用紅外光譜對合成產物進行表征。
 本文還對l-丙基-3-甲基咪唑溴鹽和l-丁基-3-甲基咪唑溴鹽的制備及表征制備進行了初步研究。
 
關鍵詞：離子液體；l-甲基咪唑；溴乙烷；l-乙基-3-甲基咪唑溴鹽

Abstract: Ionic liquids have advantages of large liquid temperature range, wide solution, no significant vapor pressure, good stability, Polar strong acidic and adjustable, electrochemical window big. They have broad application prospects in the fields of electrochemical, catalytic organic synthesis biochemistry.
In this paper, 1-ethyl-3-methylimidazolium bromides were synthesized with raw materials of 1-methylimidazole and ethyl bromide. Establish the technology of synthetic l - ethyl-3-methylimidazolium bromides by choosing a series of reaction times, temperatures, feed ratios, namely: the reaction temperature of 50℃ and the reaction time of 6 h, 1-methylimidazole and ethyl bromide ratio of 1 : 1.2. Under these conditions, l - ethyl-3-methylimidazolium bromide salt yield of 92.73%. purity of the product was determined by analysis of 97.85%, and characterize the products by using infrared spectroscopy.
    It also prepares and characterize l-propyl- 3-methylimidazolium bromide salt, and 1-butyl - 3-methylimidazolium bromide salt as a preliminary study.

Key words：Ionic liquid; 1-Methylimidazole; Eethyl bromide; 1-Ethyl-3-Methylimidazole