| 醚基功能化离子液体合成及催化烷基化反应 |
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| 引用本文： | 卢丹,赵国英,任保增,江振西,张锁江. 醚基功能化离子液体合成及催化烷基化反应[J]. 化工学报, 2015, 66(7): 2481-2487. DOI: 10.11949/j.issn.0438-1157.20150233 |
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| 作者姓名： | 卢丹 赵国英 任保增 江振西 张锁江 |
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| 作者单位： | 1.郑州大学化工与能源学院, 河南 郑州 450000;2.中国科学院过程工程研究所, 离子液体清洁过程北京市重点实验室, 多相复杂系统国家重点实验室, 北京 100190 |
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| 基金项目： | 国家自然科学基金项目(51374193)；北京市自然科学基金项目(2122052)；国际科技合作与交流专项(2014DFA61670)。 |
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| 摘 要： | 合成了一系列酸性的醚基功能化离子液体,对其进行了表征和测定。通过乙腈探针红外光谱法确定了最强酸性的催化剂,并将其用于催化异丁烷与2-丁烯的烷基化反应。结果表明:1-甲氧基乙基-3-甲基咪唑溴氯铝酸离子液体([MOEMIM]Br/AlCl3)在AlCl3摩尔比为0.75时酸性最强,催化烷基化反应效果最佳;在反应温度35℃,异丁烷与2-丁烯体积比10:1的反应条件下催化烷基化反应,可得到C8选择性66.6%的烷基化油;其催化效果远优于非醚基功能化氯铝酸离子液体的催化效果;该催化剂可循环利用。
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| 关 键 词： | 离子液体 烷基化 烷烃 酸性 催化剂 |
| 收稿时间： | 2015-02-13 |
| 修稿时间： | 2015-04-10 |
Isobutane alkylation catalyzed by ether functionalized ionic liquids |
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| LU Dan,ZHAO Guoying,REN Baozeng,JIANG Zhenxi,ZHANG Suojiang. Isobutane alkylation catalyzed by ether functionalized ionic liquids[J]. Journal of Chemical Industry and Engineering(China), 2015, 66(7): 2481-2487. DOI: 10.11949/j.issn.0438-1157.20150233 |
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| Authors: | LU Dan ZHAO Guoying REN Baozeng JIANG Zhenxi ZHANG Suojiang |
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| Affiliation: | 1.School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450000, Henan, China;2.Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | A series of acidic ether functionalized chloroaluminate ionic liquids were synthesized and studied. The catalyst with the highest acidity was screened out by FT-IR spectra using acetonitrile as infrared probe and used to catalyze the alkylation of isobutane with 2-butene. It was proved that the acidity of 1-methoxyethyl-3- methylimidazolium bromide aluminium chloride ([MOEMIM]Br/AlCl3) was the highest when the molar ratio of AlCl3 was 0.75. The high quality alkylate with a C8 selectivity of 66.6%(mass) was obtained at 35℃ with the isoparaffin/olefin molar ratio (I/O) of 10, which was much better than that with non-ether functionalized chloroaluminate ionic liquids. The catalysts could be reused several times without obvious loss of activity. |
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| Keywords: | ionic liquids alkylation alkane acidity catalyst |
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