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Proceedings Paper

Methane steam reforming by resonant excitation of vibrational levels using spectrally controlled thermal radiation
Author(s): Yuriko Maegami; Fumitada Iguchi; Hiroo Yugami
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Paper Abstract

The surface grating technologies enable to control the thermal radiation spectrum. We are applying this technique to promote the chemical reaction to produce hydrogen in the methane steam reforming process by spectrally resonant thermal radiation. The thermal radiation spectrum is adjusted to the vibrational absorption bands of methane and water molecules near 3μm by making two-dimensional (2D) microcavities with the period Λ=2.6 μm on the radiative surface. By tuning the peak of thermal radiation to the absorption bands of these gases, it is clearly observed that the methane steam reforming is promoted by using spectrally selective emitter. Since the promotion of hydrogen production can be observed under resonant excitation of gases, it is suggested that the optical excitation of vibrational levels is contributed to this phenomenon. From the result, it is confirmed that the thermal radiation resonant with molecular absorption bands is effective to the high production rate of hydrogen in methane steam reforming process. To study the detail process of chemical reaction, under resonant excitation, the produced gas is analyzed by gas chromatograms.

Paper Details

Date Published: 18 May 2010
PDF: 9 pages
Proc. SPIE 7725, Photonics for Solar Energy Systems III, 77251E (18 May 2010); doi: 10.1117/12.854120
Show Author Affiliations
Yuriko Maegami, Tohoku Univ. (Japan)
Fumitada Iguchi, Tohoku Univ. (Japan)
Hiroo Yugami, Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 7725:
Photonics for Solar Energy Systems III
Ralf B. Wehrspohn; Andreas Gombert, Editor(s)

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