NANOWIRE CATALYSTS

• Main Authors: DMITRY KARSHTEDT, ERIK C. SCHER, JOEL GAMORAS, GREG NYCE, JOEL M. CIZERON, WAYNE P. SCHAMMEL, FABIO R. ZURCHER, ALEX TKACHENKO
• Format: Patent
• Language: English; Spanish
• Published: 08.04.2013
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

Nanowires useful as heterogeneous catalysts are provided. The nanowire catalysts are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to ethylene. Related methods for use and manufacture of the same are also disclosed. More specifically, a catalyst comprising an inorganic catalytic polycrystalline nanowire, the nanowire having a ratio of effective length to actual length of less than one and an aspect ratio of greater than ten as measured by TEM in bright field mode at 5 keV, wherein the nanowire comprises one or more elements from any of Groups 1 trough 7, lanthanides, actinides or combinations thereof. The preparation of these polycrystalline nanowires involves the use of biological template such as a bacteriophage from the M13 family comprising protein pVIII. Also, an inorganic nanowire comprising one or more metal elements from any of Groups 1 through 7, lanthanides, actinides or combinations thereof and a dopant comprising a metal element, a semi -metal element, a non-metal element or combinations thereof is disclosed and nanowires having core/shell structure are disclosed. Preparation of nanowires in the absence of biological templates is also provided. Se proporcionan nanoalambres útiles como catalizadores heterogéneos. Los catalizadores de nanoalambres son útiles en una diversidad de reacciones catalíticas, por ejemplo el acoplamiento oxidativo de metano a etileno. También se describen métodos relacionados para uso y elaboración de los mismos.