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发表时间：2004-01-01

发表刊物：光散射学报

期号：2

页面范围：166-171

ISSN号：1004-5929

摘要：Cold plasma is an effective technology converting methane to more valuable products such as C2H2 and C2H4, but the reaction mechanisms was not clear due to the complex nature of plasma. In this paper, optical emission spectroscopy (OES) was adopted for the first time by our group for in situ diagnosis of the conversion of methane under cold plasma. The excited species, such as excited radicals and atoms (CH, C2 and C) were detected in the spectra range of 250 ～ 670 nm. Based on the detection of these excited species, the analysis of products by gas chromatograph andthe characterization of plasma, the micro-process of the conversion reaction of CH4 under plasma was suggested to be radical process.

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