ONE—STEP CONVERSION OF ETHANE TO ETHYLENE OXIDE IN AC PARALLEL PLATE DIELECTRIC BARRIER DISCHARGE

Original scientific paper

Authors

  • Thitiporn Suttikul Division of Chemical Process Engineering Technology, Faculty of Engineering and Technology, King Mongkut’s University of Technology North Bangkok, Rayong Campus, Rayong 21120, Thailand andThe Plasma and Automatic Electric Technology Research Group, King Mongkut’s University of Technology North Bangkok, Rayong Campus, Rayong 21120, Thailand
  • Sirimas Manthung Division of Chemical Process Engineering Technology, Faculty of Engineering and Technology, King Mongkut’s University of Technology North Bangkok, Rayong Campus, Rayong 21120, Thailand
  • Sasikarn Nuchdang Research and Development Division, Thailand Institute of Nuclear Technology (Public Organization), Pathum Thani 12120, Thailand https://orcid.org/0000-0002-0201-3214
  • Dussadee Rattanaphra Research and Development Division, Thailand Institute of Nuclear Technology (Public Organization), Pathum Thani 12120, Thailand https://orcid.org/0000-0002-1739-5294
  • Thongchai Photsathian Division of Instrumentation and Automation Engineering Technology, Faculty of Engineering and Technology, King Mongkut’s University of Technology North Bangkok, Rayong Campus, Rayong 21120, Thailand

DOI:

https://doi.org/10.2298/CICEQ230228026S

Keywords:

Dielectric barrier discharge, Epoxidation, Ethane oxidative dehydrogenation, Ethylene oxide, One-step reaction

Abstract

This work studied the one-step conversion of ethane (C2H6) to ethylene oxide (EO) in an AC parallel plate dielectric barrier discharge (DBD) system with two frosted glass plates under ambient temperature and atmospheric pressure. EO is directly produced from C2H6 in a single step without the requirement to separate and recycle ethylene. The effects of the applied voltage, input frequency, and O2/C2H6 feed molar ratio on the EO synthesis performance were examined. The results showed that a higher applied voltage and lower input frequency generated more highly energetic electrons, resulting in a higher current. More electrons collided with reactant gas molecules to initiate plasma reactions, increasing C2H6 and O2 conversions. The increased O2/C2H6 feed molar ratio enhanced C2H6 and O2 conversions. The optimum conditions were found to be an applied voltage of 7 kV, input frequency of 550 Hz, and O2/C2H6 feed molar ratio of 1:1, which demonstrated the highest EO selectivity (42.6%), EO yield (19.4%), and lowest power consumption per EO molecule produced (6.7 x 10-18 Ws/molecule).

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Published

06.10.2023 — Updated on 12.04.2024

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How to Cite

ONE—STEP CONVERSION OF ETHANE TO ETHYLENE OXIDE IN AC PARALLEL PLATE DIELECTRIC BARRIER DISCHARGE: Original scientific paper. (2024). Chemical Industry & Chemical Engineering Quarterly, 30(3), 231-241. https://doi.org/10.2298/CICEQ230228026S

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