Chemistry of inorganic compounds – Selenium or tellurium or compound thereof
Reexamination Certificate
2008-03-03
2010-06-01
Vanoy, Timothy C (Department: 1793)
Chemistry of inorganic compounds
Selenium or tellurium or compound thereof
C423S511000, C977S773000, C977S775000
Reexamination Certificate
active
07727506
ABSTRACT:
Soluble chalcogenido clusters together with transition metal ions and main group elements are shown to provide gels having interconnected, open frameworks. Following supercritical drying with liquid carbon dioxide, the chalcogels may be converted to aerogels. The aerogels possess high internal surface areas with a broad pore size distribution that is dependent upon the precursors used and the aging conditions applied. Some of the gels are encompassed by formulas such as M4[M′4Qx]n, M4[M′2Qy]n, M4[M′Qx]n, M3[M″Qx]n, or Me2[M′″Qx]n, where M is a divalent, trivalent, or tetravalent metal ion; M′, M″, and M′″ are typically Ge, Sn, P, As, Sb, Mo, or W; and Q is typically S, Se, or Te. Methods of preparing the chalcogenido clusters are also provided.
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Bag Santanu
Kanatzidis Mercouri G.
Northwestern University
Reinhart Boerner Van Deuren s.c.
Vanoy Timothy C
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