Comments 1 To Author

MANUSCRIPT REVIEW FORM Journal of Natural Gas Chemistry

Manuscript number:

20050202

Authors:

Antonius Indarto, Jae-Wook Choi, Hwaung Lee, and Hyung Keun Song

Title:

Kinetic Modeling of Plasma Methane Conversion using Gliding Arc

Recommendations: □ Publish without change. √ Publish after minor revision. □ Publish after major revision. □ Revisions are necessary.

Summary Rating: Originality Scientific approach, rigor and quality Clarity and conciseness of the report English expression and grammar

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And return to me upon resubmittal. Do not publish. Publish elsewhere

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where? Other; see report.

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Specific comments:(use additional pages if needed) 1. The authors said in the article that the plasma reaction of methane to hydrogen, acetylene and carbon is an

2. 3. 4. 5.

exothermic reaction, please give a specification of the conclusion. As all known that the decomposition of methane is endothermic reaction from thermodynamic analysis. Some mistakes were made in Figure 6 and Figure 7. In Figure 6c and Figure 7c it is not clear which is the simulation one or the experimental data. The measurements of voltage and current are coarse. The unit used in this article such as Nl/min should be transfer to international standard unit. English grammar should be revised slightly.