Chemistry of inorganic compounds – Silicon or compound thereof – Binary compound
Reexamination Certificate
2005-06-14
2010-10-12
Brunsman, David M (Department: 1793)
Chemistry of inorganic compounds
Silicon or compound thereof
Binary compound
C502S243000
Reexamination Certificate
active
07811541
ABSTRACT:
The invention relates to a method of making alkali metal silicide compositions, and the compositions resulting from the method, comprising mixing an alkali metal with silicon and heating the resulting mixture to a temperature below about 475° C. The resulting compositions do not react with dry O2. Also, the invention relates to sodium silicide compositions having a powder X-ray diffraction pattern comprising at least three peaks with 2Theta angles selected from about 18.2, 28.5, 29.5, 33.7, 41.2, 47.4, and 56.2 and a solid state23Na MAS NMR spectra peak at about 18 ppm. Moreover, the invention relates to methods of removing a volatile or flammable substance in a controlled manner. Furthermore, the alkali metal silicide compositions of the invention react with water to produce hydrogen gas.
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Dye James L.
Lefenfeld Michael
Board of Trustees of Michigan State University
Brunsman David M
J.A. Lindeman & Co., PLLC
Johnson Kevin M
Signa Chemistry, Inc.
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