Biphasic epoxidation reaction in the absence of surfactants - integration of reaction and separation steps in microtubular reactors

Laura Torrente-Murciano, Simon D. Bishopp, Dominic Fox, Janet L. Scott

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper presents a paradigm shift with respect to the current direction of biphasic reactions in surfactant-free emulsions. Herein, the contact area between both phases is simply sustained by the reactor design (i.e., diameter of the tubular reactor) compared to the current trend of using reversible/switchable emulsions where the addition of an external agent (e.g., bistable surfactant, magnetic particles, etc.) is required. In this way, temporally stable phase dispersions using microtubular reactors facilitate the integration of reaction and separation steps in biphasic systems without the need for energy-intensive downstream separation steps. In this study, we demonstrate this innovative tool in the epoxidation reaction of sunflower oil with hydrogen peroxide. Using a combination of mechanistic and kinetic studies, we demonstrate that the poor solubility of the catalytic species in the oil phase may be used advantageously, allowing ready recyclability of catalyst (and oxidant) in consecutive runs.

Original languageEnglish
Pages (from-to)3245-3249
Number of pages5
JournalACS Sustainable Chemisty and Engineering
Volume4
Issue number6
Early online date11 Apr 2016
DOIs
Publication statusPublished - 6 Jun 2016

Keywords

  • Droplet
  • Green oxidations
  • Hydrogen peroxide
  • Microreactors
  • Multiphase reactions
  • Process integration

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