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2-甲氧基環己醇脫氫制備愈創木酚

時間:2019-05-24 21:30來源:畢業論文
利用2-甲氧基環己醇脫氫制備愈創木酚,確定了幾種理論上可行的復合負載催化劑,并按照設計要求進行了相關的實驗。并且在實驗過程中討論了復合負載催化劑的用量

摘要:愈創木酚是一種白色的或者淡黃色的結晶,其單體在常溫常壓下又能以淡黃色透明油狀液體的狀態純在。愈創木酚有特殊的芳香氣味,自然界中存在于愈創木樹脂、硬木干餾油以及松油中,是一種重要的精細化工反應中間體,常用于香精香料、醫藥及染料的合成。本文利用2-甲氧基環己醇脫氫制備愈創木酚,確定了幾種理論上可行的復合負載催化劑,并按照設計要求進行了相關的實驗。并且在實驗過程中討論了復合負載催化劑的用量,反應時間和反應溫度對實驗結果的影響。在使用了經過4%硫酸鈉改性之后的45%NiAlK10催化劑進行2-甲氧基環己醇的催化脫氫后,有良好的實驗結果。原料的轉化率可以達到57.4%,得率在8.7%以上,同時總體轉化率穩定,反應溫度不需要太高,符合節能環保的綠色理念;另一方面,副反應也比較穩定,副產物主要為苯酚,其他雜質不多,也便于制備結束之后產品的分離和提純。35668
畢業論文關鍵詞:愈創木酚;脫氫;2-甲氧基環己醇;催化劑;載體
Improving the Method of the Preparation of Guaiacol by  2-Methoxycyclohexanol
Abstract: Guaiacol is a white or yellowish crystals, which monomer at normal temperature and pressure but also to light yellow transparent oily liquid in pure state. Guaiacol has a special aroma, naturally occurring in guaiacyl resin, hardwood retorting oil and pine oil, and is an important chemical reaction intermediates, used in the synthesis of flavors and fragrances, pharmaceuticals and dyes. In this paper, 2-methoxy cyclohexanol dehydrogenation guaiacol, identified several theoretically feasible compound supported catalyst, and in accordance with the design requirements for the relevant experiments. And discussed the impact of the amount of compound supported catalyst, reaction time and temperature on the results of the experiment. After using 45% NiAlK10 after catalyst 4% sodium sulfate was modified after 2-methoxy cyclohexanol catalytic dehydrogenation, with good results. Although the idea of the expected yield of the product has not reached, but the overall conversion rate of raw materials is stable, it does not require high reaction temperatures, in line with energy saving green concept; on the other hand, side effects are relatively stable, the main byproduct of phenol, other much impurities, but also facilitate the preparation of the end product separation and purification. 源¥自%六:維;論-文'網=www.aftnzs.live
Key words: Guaiacol; HDC; 2-Methoxycyclohexanol; Catalyzer; Carrier
目錄
1緒論    1
1.1 論文研究意義    1
2 原料介紹    3
2.1 主體原料    3
2.1.1 2-甲氧基環己醇    3
2.2.2 愈創木酚    3
2.2 催化劑與載體    3
2.2.1 綜述    3
2.2.2 金屬鎳    4
2.2.3 磷化鎳    4
2.2.4 氧化鋁系催化劑    4
2.2.5 氧化鋅    6
2.2.6 金屬銅    6
2.2.7 載體    7
2.2.8 二氧化硅    7
2.2.9 碳酸鈣晶體    7
2.2.10 氧化鋁載體    7
2.2.11 其他載體    7
3 儀器介紹    9
3.1 合成儀器介紹    9
3.1.1 固定床反應器裝置    9
3.1.2 工藝流程圖    10
3.2 分析儀器介紹    11
3.2.1 主要分析儀器列表    11
4 實驗原理介紹    12
4.1 傳統制備方法的實驗原理    12
4.2 2-甲氧基環己醇制備愈創木酚的實驗原理    14
5 實驗流程介紹    18
5.1 流程綜述    18 2-甲氧基環己醇脫氫制備愈創木酚:http://www.aftnzs.live/huaxue/20190524/33713.html
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