Membrane Separation of 2-Ethyl Hexyl Amine/1-Decene

  • Bander Bawareth

Student thesis: Master's Thesis

Abstract

1-Decene is a valuable product in linear alpha olefins plants that is contaminated with 2-EHA (2-ethyl hexyl amine). Using organic solvent nanofiltration membranes for this separation is quite challengeable. A membrane has to be a chemically stable in this environment with reasonable and stable separation factor. This paper shows that Teflon AF 2400 and cellulose acetate produced interesting results in 1-decene/2-EHA separation. The separation factor of Teflon AF 2400 is 3 with a stable permeance of 1.1x10-2 L/(m2·h·bar). Likewise, cellulose acetate gave 2-EHA/1-decene separation factor of 2 with a lower permeance of 3.67x10-3 L/(m2·h·bar). A series of hydrophilic membranes were tested but they did not give any separation due to high degree of swelling of 2-EHA with these polymers. The large swelling causes the membrane to lose its diffusivity selectivity because of an increase in the polymer's chain mobility.
Date of AwardDec 2012
Original languageEnglish (US)
Awarding Institution
  • Physical Science and Engineering
SupervisorIngo Pinnau (Supervisor)

Keywords

  • organic
  • solvert
  • nano filtration
  • 1-Decene
  • 2-ethyl hexyl amine

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