Partial reduction of anthracene by cold field emission in liquid in a microreactor with an integrated planar microstructured electrode

M. Morassutto, P. van der Linde, S. Schlautmann, R.M. Tiggelaar, J.G.E. Gardeniers* (Corresponding Author)

*Corresponding author for this work

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Abstract

We report a novel microreactor with a photolithographically defined integrated electrode containing micro tips that serve as emission points for solvated electrons into liquid n-hexane in a microfluidic channel. The implementation of sharp electrode tips permits to extract electrons from the electrode material at relatively low voltages. The electric field distribution in the gap between a planar patterned platinum microtip array and a planar rectangular counterelectrode is analyzed by a computational model. Cold field emission using these microdevices is experimentally verified, and the partial reduction of anthracene to 9,10-dihydroanthracene, via solvated electrons emitted in solutions with or without ethanol in n-hexane is investigated. It is found that in the current microreactor configuration, the majority of the products are products originating from coupling of ethanol fragments to, and/or oxidation of 9,10-dihydroanthracene at the platinum counterelectrode, leaving no detectable yield of the desired reduction product.

Original languageEnglish
Pages (from-to)29-36
Number of pages8
JournalChemical engineering and processing : process intensification
Volume124
DOIs
Publication statusPublished - 1 Feb 2018

Keywords

  • UT-Hybrid-D
  • Fowler-Nordheim
  • Microreactor
  • Reduction of anthracene
  • Solvated electrons
  • Cold field emission

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