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In‐Situ Chemical Trapping of Oxygen in the Splitting of Carbon Dioxide by Plasma
Author(s) -
Aerts Robby,
Snoeckx Ramses,
Bogaerts Annemie
Publication year - 2014
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201400091
Subject(s) - hydrogen , oxygen , carbon dioxide , trapping , plasma , carbon fibers , materials science , chemical engineering , methane , chemistry , analytical chemistry (journal) , environmental chemistry , organic chemistry , ecology , physics , quantum mechanics , engineering , biology , composite number , composite material
A crucial step in the plasma splitting of carbon dioxide is the separation of the conversion products, and this is not straightforward, especially for separating O 2 from CO 2 and CO. In this work the trapping of atomic oxygen by adding a hydrogen source, which enhances the chemical conversion into water, is demonstrated. The experimental and modelling results show that by adding 3% of H 2 and 2% of CH 4 most of the oxygen can be trapped at a CO 2 conversion of ±2.5%. The identified products formed by the addition of CH 4 or H 2 are mainly H 2 O and in the case of CH 4 also H 2 . Adding a hydrogen source thus leads to the removal of O 2 , leaving behind a gas mixture that can be more easily separated.