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相关概念视频

Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

72
A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...
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Millifluidics for Chemical Synthesis and Time-resolved Mechanistic Studies
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连续流动液体-液体接口催化剂的分隔液滴

Ming Zhang1,2, Lijuan Wei1, Huan Chen1

  • 1School of Chemistry and Chemical Engineering, Shanxi University , Taiyuan 030006, China.

Journal of the American Chemical Society
|July 19, 2016
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概括

我们开发了Flow Pickering乳液 (FPE),一种用于双相催化的新型连续流体方法. 这种技术使水溶性催化剂在水滴中固定,与批量方法相比,提高了反应效率高达十倍.

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科学领域:

  • 化学工程
  • 催化剂
  • 流动化学

背景情况:

  • 批量有机水性双相催化面临的局限性阻碍了效率和可扩展性.
  • 连续流处理具有优势,但需要对双相系统采取创新方法.

研究的目的:

  • 引入一种新的连续流程方法,即流动皮克林乳液 (FPE),用于处理有机水两相反应.
  • 通过创新的液体-液体接口协议克服传统的双相催化剂的局限性.

主要方法:

  • 使用油中的水皮克林乳液在柱式反应器中微米大小的液滴中分隔水溶性催化剂的FPE开发.
  • 在FPE系统中对油相流,滴滴稳定性和催化剂限制进行实验和理论研究.
  • 通过涉及酸催化添加,环开放和酶催化合反应的案例研究来证明FPE的多功能性.

主要成果:

  • 成功实施FPE用于连续流的双相催化,证明了催化剂固定和高效的有机相流.
  • 案例研究证实了FPE在不同反应类型中的普遍性和多功能性.
  • 与批处理过程相比,FPE反应具有很好的耐用性,反应效率提高了10倍,这是由于流界面催化效应.

结论:

  • FPE为传统的双相催化提供了可持续和高效的流化学方法.
  • 这种方法可以提高反应效率和催化剂保留,为工艺强化开辟新的途径.
  • 在液体-液体接口协议中,FPE代表了连续流反应的重大进步.