DC Corona Electric Discharges for Air Pollution Control, 2—Ionic Intermediates and Mechanisms of Hydrocarbon Processing | Zendy

Marotta Ester | Zendy; Callea Alessandro | Zendy; Ren Xianwen | Zendy; Rea Massimo | Zendy; Paradisi Cristina | Zendy

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DC Corona Electric Discharges for Air Pollution Control, 2—Ionic Intermediates and Mechanisms of Hydrocarbon Processing

Author(s) -

Marotta Ester,

Callea Alessandro,

Ren Xianwen,

Rea Massimo,

Paradisi Cristina

Publication year - 2008

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.200700128

Subject(s) - corona discharge , ozone , analytical chemistry (journal) , ion , corona (planetary geology) , chemistry , ionic bonding , atmospheric pressure , mass spectrometry , ion wind , hydrocarbon , environmental chemistry , electrode , chromatography , organic chemistry , meteorology , physics , astrobiology , venus

A mechanistic study is reported on i ‐octane and hexane processing with +DC and −DC corona in air at room temperature and pressure. Current/voltage profiles are matched with the ion analysis data obtained by APCI mass spectrometry. With a −DC corona, the hydrocarbons do not modify the negative ion population with respect to uncontaminated air. In contrast, with a +DC corona many hydrocarbon‐derived positive ions form. O( 3 P) and • OH were also investigated using chemical probes (ozone formation and CO oxidation, respectively). The results, combined with efficiency and product data, suggest that with −DC corona radical initiation steps occur, whereas with +DC corona ionic reactions prevail.

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