Laser-initiated chain reactions in the partial oxidation of methane

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Using laser photolysis of suitable precursor molecules to produce gas-phase free radicals, we have been studying important kinetic processes in the partial oxidation of methane. Prompt production of a relatively high concentration of free radicals via laser photolysis makes it possible to separate the thermal initiation step from the subsequent chain propagation steps. Since the conditions (temperature, pressure, and mixture composition) for rapid thermal initiation and optimum production may differ, this provides an exciting potential application for laser-induced chemistry where the laser acts as the initiation source. We report our results on the partial oxidation of methane by oxygen at ... continued below

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Pages: 28

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Baughcum, S.L.; Oldenborg, R.C.; Danen, W.C.; Streit, G.E. & Rofer, C. January 1, 1986.

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Description

Using laser photolysis of suitable precursor molecules to produce gas-phase free radicals, we have been studying important kinetic processes in the partial oxidation of methane. Prompt production of a relatively high concentration of free radicals via laser photolysis makes it possible to separate the thermal initiation step from the subsequent chain propagation steps. Since the conditions (temperature, pressure, and mixture composition) for rapid thermal initiation and optimum production may differ, this provides an exciting potential application for laser-induced chemistry where the laser acts as the initiation source. We report our results on the partial oxidation of methane by oxygen at moderate temperatures. A trace amount of acetone is photolyzed at 193 nm a prompt source of methyl radicals in methane-oxygen mixtures. Details of the proposed mechanism are discussed as well as application of the technique to technologies for methane conversion to transportable fuels such as methanol. 15 refs., 6 figs.

Physical Description

Pages: 28

Notes

NTIS, PC A03/MF A01; 1.

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  • Society of Photo-Optical Instrumentation Engineers international symposium: topics in optical and optoelectronic applied sciences and engineering, Quebec City, Canada, 2 Jun 1986

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  • Other: DE86011272
  • Report No.: LA-UR-86-1483
  • Report No.: CONF-860620-4
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5698604
  • Archival Resource Key: ark:/67531/metadc1092366

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1986

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  • Feb. 10, 2018, 10:06 p.m.

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  • May 23, 2018, 12:23 p.m.

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Baughcum, S.L.; Oldenborg, R.C.; Danen, W.C.; Streit, G.E. & Rofer, C. Laser-initiated chain reactions in the partial oxidation of methane, article, January 1, 1986; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1092366/: accessed June 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.