1. Hydrogen generation from water, methane, and methanol with nonthermal plasma
- Author
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Hisahiro Einaga, Hajime Kabashima, and Shigeru Futamura
- Subjects
Hydrogen ,Chemistry ,Analytical chemistry ,chemistry.chemical_element ,Nonthermal plasma ,Industrial and Manufacturing Engineering ,Methane ,Volumetric flow rate ,chemistry.chemical_compound ,Control and Systems Engineering ,Yield (chemistry) ,Specific energy ,Methanol ,Electrical and Electronic Engineering ,Hydrogen production - Abstract
Hydrogen generation from water, methane, and methanol was investigated with different types of nonthermal plasma reactors under different conditions. With a ferroelectric packed-bed reactor in N/sub 2/, hydrogen gas yield decreased in the order: methanol > methane > water. A similar trend was observed with a silent discharge plasma reactor, but H/sub 2/ yields were much lower with the latter reactor. At fixed specific energy densities, higher H/sub 2/ yields were obtained at higher gas flow rates in the reactions of the above substrates. The initial water concentration was optimized at ca. 2.0% to obtain the highest rate for H/sub 2/ formation. Under the same conditions, H/sub 2/ yield decreased in the order: Ar>N/sub 2/>air/spl ap/O/sub 2/. The ferroelectric packed-bed reactor could be operated continuously for 10 h without any decrease in its performance in the H/sub 2/ generation from water.
- Published
- 2002
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