Promotion of hydrogen production by resonant excitation of vibrational levels using spectrally controlled thermal radiation

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 vibrational absorption bands of methane and water molecules near 3 μm by making a two-dimensional surface grating of period Λ=2.6 μm on the radiative surface. By matching the peak of thermal radiation to the absorption bands of gases, it is clearly observed that the hydrogen production is promoted five times as much as the case without spectrally resonant thermal radiation by the optical excitation of vibrational energy levels of molecules. From a series of experiments and analysis, it is suggested that radiative gas effectively excited the molecules up of high energy vibrational and rotational levels, and this lead to the high production rate of hydrogen in methane steam reforming process.

Original languageEnglish
Title of host publicationSolar Hydrogen and Nanotechnology III
DOIs
Publication statusPublished - 2008 Nov 21
EventSolar Hydrogen and Nanotechnology III - San Diego, CA, United States
Duration: 2008 Aug 132008 Aug 14

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7044
ISSN (Print)0277-786X

Other

OtherSolar Hydrogen and Nanotechnology III
CountryUnited States
CitySan Diego, CA
Period08/8/1308/8/14

Keywords

  • Hydrogen production
  • Methane reforming
  • Resonant excitation vibration
  • Surface grating
  • Thermal radiation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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