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Brønsted酸性离子液体催化合成聚甲醛二甲醚的研究

赵强 ,  李为民 ,  陈清林

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引用本文: 赵强, 李为民, 陈清林. Brønsted酸性离子液体催化合成聚甲醛二甲醚的研究[J]. 燃料化学学报, 2013, 41(4): 463-468. shu
Citation:  ZHAO Qiang, LI Wei-min, CHEN Qing-lin. Synthesis of poly(oxymethylene) dimethy ethers catalyzed by Brønsted acid ionic liquids[J]. Journal of Fuel Chemistry and Technology, 2013, 41(4): 463-468. shu

Brønsted酸性离子液体催化合成聚甲醛二甲醚的研究

    通讯作者: 李为民, Tel: 13961208268, E-mail: liweimin@cczu.edu.cn.
  • 基金项目:

    江苏省精细石油化工重点实验室开放课题(KF0808) (KF0808)

    江苏省科技厅工程技术中心建设项目(BM2010095, BM2010132). (BM2010095, BM2010132)

摘要: 合成并表征了两种Brønsted酸性离子液体N-甲基-2吡咯烷酮硫酸氢盐([Hnmp]HSO4)和N-甲基-2吡咯烷酮对甲苯磺酸盐([Hnmp]PTSA),对两种离子液体在由甲缩醛和多聚甲醛缩合制备聚甲醛二甲醚(DMMn,n > 1)反应中的催化性能进行了研究.结果显示,离子液体的催化活性与其酸性相关,离子液体[Hnmp]HSO4具有较高的催化活性;当离子液体[Hnmp]HSO4 的用量为2.0%(质量分数)、m(甲缩醛)/m(多聚甲醛)= 2.00、反应温度110℃、反应时间6 h时,甲缩醛的转化率和DMM3~8 的选择性分别为52.28%和49.18%.反应结束后,离子液体[Hnmp]HSO4与产物自动分成两相,且该离子液体的稳定性好,重复使用五次后仍有较高的催化活性.

English

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  • 收稿日期:  2012-10-15
  • 网络出版日期:  2012-12-06
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