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    SILICIDE COMPOSITIONS CONTAINING ALKALI METALS AND METHODS OF MAKING THE SAME
    1.
    发明公开
    SILICIDE COMPOSITIONS CONTAINING ALKALI METALS AND METHODS OF MAKING THE SAME 有权
    与碱金属和工艺硅化物组成及其

    公开(公告)号：EP1768926A2

    公开(公告)日：2007-04-04

    申请号：EP05785526.4

    申请日：2005-06-14

    申请人： SIGNA CHEMISTRY LLC ,  Michigan State University

    发明人： LEFENFELD, Michael ,  DYE, James, L.

    IPC分类号： C01B25/01

    CPC分类号： C11D7/04 ,  C01B3/06 ,  C01B3/08 ,  C01B33/06 ,  C11D17/042 ,  F24V30/00 ,  Y02E60/364

    摘要： 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 O 2 . 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 state 23 Na 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.

    TITANIUM OXIDE AND ALUMINA ALKALI METAL COMPOSITIONS
    2.
    发明公开
    TITANIUM OXIDE AND ALUMINA ALKALI METAL COMPOSITIONS 审中-公开
    氧化钛，氧化铝含碱金属成分

    公开(公告)号：EP1807199A2

    公开(公告)日：2007-07-18

    申请号：EP05800331.0

    申请日：2005-09-22

    申请人： SIGNA CHEMISTRY LLC ,  Michigan State University

    发明人： LEFENFELD, Michael ,  DYE, James, L.

    IPC分类号： B01J23/04 ,  C07F1/02 ,  C07C17/25

    CPC分类号： C01G23/00 ,  B01J21/04 ,  B01J21/063 ,  B01J23/04 ,  B01J35/1061 ,  B01J35/1066 ,  B01J37/0081 ,  B01J37/0201 ,  B01J37/023 ,  B01J37/08 ,  C01B3/042 ,  C01B3/065 ,  C01B3/08 ,  C01P2006/16 ,  C07C1/26 ,  C07C2/861 ,  C07C5/324 ,  C07C17/23 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2523/04 ,  Y02E60/362 ,  Y02E60/364 ,  C07C15/18 ,  C07C15/20

    摘要： The invention relates to Group 1 metal/porous metal oxide compositions comprising porous metal oxide selected from porous titanium oxide and porous alumina and an alkali metal or an alkali metal alloy. The compositions of the inventions are described as Stage 0 and I materials. These materials differ in their preparation and chemical reactivity. Each successive stage may be prepared directly using the methods described below or from an earlier stage material. Stage 0 materials may, for example, be prepared using liquid alloys of Na and K which are rapidly absorbed by porous metal oxide under isothermal conditions, preferably at or just above room temperature, to form loose black powders that retain much of the reducing ability of the parent metals. When the low melting Group 1 metals are absorbed into the porous metal oxide at about 150°C, an exothermic reaction produces Stage I material, loose black powders that are stable in dry air. Further heating forms higher stage materials of unknown composition. It is believed that Stage I higher materials represent reductions of the porous metal oxide after absorption of the Group 1 metal. Preferred Group 1 metal/porous metal oxide compositions of the invention are those containing sodium, potassium, or sodium-potassium alloys with sodium and sodium-potassium alloys being most preferred. Each stage of the Group 1 metal/porous metal oxide composition of the invention may be used as a reducing agent reacting with a number of reducible organic materials in the same manner known for alkali metals and their alloys.