您的位置：首页 > 论文页面
酸性离子液体N-甲基吡咯烷酮硫酸氢盐催化合成乙酸乙酯
发表时间：2011-04-15 浏览量：1695 下载量：456
| 全部作者： | 高楠楠，李文春，唐晓雪，崔巍，唐盛伟 |
| 作者单位： | 四川省多相流传质与化学反应工程重点实验室，四川大学化学工程学院 |
| 摘 要： | 以酸性离子液体N-甲基毗咯烷酮硫酸氢盐(［Hnmp］HSO4)为催化剂，对乙酸乙酯的酯化反应进行研究，重点考察反应温度、反应时间、催化剂用量等因素对乙酸乙酯产率的影响。实验结果表明：离子液体［Hnmp］HSO4对酯化合成乙酸乙酯有着良好的催化活性，在乙醇∶乙酸为1.4∶1.0条件下，催化剂用量为乙醇的2.5％（物质的量分数），反应温度120℃，反应时间135 min，乙酸乙酯产率可达65%（质量分数）以上，且催化剂重复使用6次仍保持较高活性。 |
| 关 键 词： | 化学反应工程；离子液体；乙酸乙酯；乙酸；乙醇；酯化 |
| Title： | Catalytic synthesis of ethyl acetate by an acidic ionic liquid N-methylpyrrolidone hydrosulfate |
| Author： | GAO Nannan, LI Wenchun, TANG Xiaoxue, CUI Wei, TANG Shengwei |
| Organization： | Laboratory of Multi-phase Mass Transfer and Chemical Reaction Engineering, School of Chemical Engineering, Sichuan University |
| Abstract： | An acidic ionic liquid N-methylpyrrolidone hydrosulfate (［Hnmp］HSO4) was used as catalyst to synthesize ethyl acetate. The effects of different reaction parameters, such as reaction temperature, reaction time and catalyst dosage were investigated. The results showed that N-methylpyrrolidone hydrosulfate exhibited excellent catalytic activity. The yield of ethyl acetate was about 65% (mass fraction) when the reaction was conducted at optimum reaction conditions: the molar ratio of ethanol and acetic acid is 1.4∶1.0, the dosage of catalyst based on alcohol is 2.5% (molar fraction), the reaction temperature is 120℃ and reaction time is 135 min. After separation with the product and dry at high vacuum, the acidic ionic liquids recycled 6 times without significant yield decrease. |
| Key words： | chemical reaction engineering; ionic liquid; ethyl acetate; acetic acid; ethanol; esterification |
| 发表期数： | 2011年4月第7期 |
| 引用格式： | 高楠楠，李文春，唐晓雪，等. 酸性离子液体N-甲基吡咯烷酮硫酸氢盐催化合成乙酸乙酯[J]. 中国科技论文在线精品论文，2011，4（7）：648-655. |
0
评论数 0请您登录
暂无评论
下载全文
多维论文