Conversion of light hydrocarbon gases to metal carbides for production of liquid fuels and chemicals. Quarterly technical status report, July 1, 1995--September 30, 1995

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Two final scoping runs were conducted to test the experimental protocol for methane conversion to alkaline earth metal carbides in the thermal plasma reactor and to refine the techniques for carbide analysis. Having demonstrated the adequacy of the experimental protocol, the systematic study of metal carbide synthesis from methane and MgO commenced. Initial runs with MgO/CH{sub 4} gave surprisingly low methane conversions (<2%) to magnesium carbides, despite high conversions (65-90%) to hydrogen. An X-ray diffraction analysis showed the presence of a significant amount of elemental magnesium, a finding supported by the observation of bright lights upon hydrolysis of the solid ... continued below

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8 p.

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Diaz, A.F.; Modestino, A.J. & Howard, J.B. November 1, 1995.

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Description

Two final scoping runs were conducted to test the experimental protocol for methane conversion to alkaline earth metal carbides in the thermal plasma reactor and to refine the techniques for carbide analysis. Having demonstrated the adequacy of the experimental protocol, the systematic study of metal carbide synthesis from methane and MgO commenced. Initial runs with MgO/CH{sub 4} gave surprisingly low methane conversions (<2%) to magnesium carbides, despite high conversions (65-90%) to hydrogen. An X-ray diffraction analysis showed the presence of a significant amount of elemental magnesium, a finding supported by the observation of bright lights upon hydrolysis of the solid products in the open air. The high conversion to hydrogen and the presence of elemental Mg in the solid products suggest that the plasma effluent is not being quenched rapidly enough and any magnesium carbides formed may be decomposing into the elements. To test this hypothesis, attempts to increase quench rates were made including lowering the arc power level, decreasing the anode nozzle-to-probe distance and introducing more quench gas.

Physical Description

8 p.

Notes

OSTI as DE96006313

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  • Other Information: PBD: Nov 1995

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  • Other: DE96006313
  • Report No.: DOE/PC/92111--T11
  • Grant Number: AC22-92PC92111
  • DOI: 10.2172/196512 | External Link
  • Office of Scientific & Technical Information Report Number: 196512
  • Archival Resource Key: ark:/67531/metadc671002

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  • November 1, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Nov. 30, 2015, 6:47 p.m.

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Diaz, A.F.; Modestino, A.J. & Howard, J.B. Conversion of light hydrocarbon gases to metal carbides for production of liquid fuels and chemicals. Quarterly technical status report, July 1, 1995--September 30, 1995, report, November 1, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc671002/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.