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Photoisomerization of cis- to trans-cyclooctene: integration of a micro-flow reactor & separation by specific adsorption
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  • Elnaz Shahbazali,
  • Emilie Billaud,
  • Jan Meuldijk,
  • Guy Bormans,
  • Timothy Noel,
  • Volker Hessel
Elnaz Shahbazali
University of Technology Eindhoven Department of Chemical Engineering and Chemistry
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Emilie Billaud
KU Leuven
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Jan Meuldijk
Eindhoven University of Technology
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Guy Bormans
Katholieke Universiteit Leuven
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Timothy Noel
Eindhoven University of Technology
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Volker Hessel
The University of Adelaide
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Abstract

Liquid-phase adsorption has hardly been established in micro-flow, although this constitutes an industrially vital method for product separation. A micro-flow UV-photo isomerization process converts cis-cyclooctene partly into trans-cyclooctene, leaving an isomeric mixture. Trans-cyclooctene adsorption and thus separation was achieved in a fixed-bed micro-flow reactor, packed with AgNO3/SiO2 powder, while the cis-isomer stays in the flow. The closed-loop recycling-flow has been presented as systemic approach to enrich the trans-cyclooctene from its cis-isomer. In-flow adsorption in recycling-mode has hardly been reported so that a full theoretical study has been conducted. This insight is used to evaluate three process design options to reach an optimum yield of trans-cyclooctene. These differ firstly in the variation of the individual residence times in the reactor and separator, the additional process option of refreshing the adsorption column under use, and the periodicity of the recycle flow.

Peer review status:ACCEPTED

26 Apr 2020Submitted to AIChE Journal
06 May 2020Submission Checks Completed
06 May 2020Assigned to Editor
12 May 2020Reviewer(s) Assigned
22 Jun 2020Editorial Decision: Revise Minor
21 Jul 20201st Revision Received
02 Sep 2020Submission Checks Completed
02 Sep 2020Assigned to Editor
03 Sep 2020Reviewer(s) Assigned
16 Sep 2020Editorial Decision: Accept