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| 杂多酸离子液体催化棉籽油制备生物柴油研究 |
| Preparation of biodiesel from cottonseed oil catalyzed by heteropoly acid ionic liquid |
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| DOI： |
| 中文关键词: 杂多酸离子液体 棉籽油 生物柴油 酯交换 |
| 英文关键词:heteropoly acid ionic liquid cottonseed oil biodiesel transesterification |
| 基金项目: |
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| 中文摘要: |
| 制备了5种杂多酸离子液体催化剂\[TEA-PS\]XH3-XPW12O40(X=1,1.5,2,2.5,3)，用于催化棉籽油酯交换制备生物柴油研究，其中杂多酸离子液体\[TEA-PS\]1.5H1.5PW12O40的催化活性最高。以杂多酸离子液体\[TEA-PS\]1.5H1.5PW12O40为催化剂，研究了甲醇与棉籽油摩尔比、催化剂\[TEA-PS\]1.5H1.5PW12O40用量、反应温度和反应时间对甲醇与棉籽油酯交换反应的影响。结果表明：当甲醇与棉籽油摩尔比为12∶?1、催化剂\[TEA-PS\]1.5H1.5PW12O40用量为棉籽油质量的5%、反应温度80?℃、反应时间6 h时，生物柴油收率最高，达95.3%；同时，催化剂\[TEA-PS\]1.5H1.5PW12O40重复使用6次后，生物柴油收率仍高于92%。 |
| 英文摘要: |
| Five kinds of heteropoly acid ionic liquids \[TEA-PS\]XH3-XPW12O40(X=1,1.5,2,2.5,3) were synthesized, and the preparation of biodiesel by transesterification of cottonseed oil catalyzed by these heteropoly acid ionic liquids were studied, in which \[TEA-PS\]1.5H1.5PW12O40 showed the highest catalytic activity. Using \[TEA-PS\]1.5H1.5PW12O40 as catalyst, the effects of molar ratio of methanol to cottonseed oil, catalyst dosage, reaction temperature and reaction time on the transesterification of methanol and cottonseed oil were investigated. The results showed that under the conditions of molar ratio of methanol to cottonseed oil 12∶?1, catalyst dosage 5% (based on the mass of cottonseed oil), reaction temperature 80?℃ and reaction time 6 h, the yield of biodiesel was the highest, reaching 95.3%. At the same time, the yield of biodiesel was still above 92% after \[TEA-PS\]1.5H1.5PW12O40 was used for six times. |
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