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NOVEL HIGH SURFACE AREA OXIDE COMPOSITIONS WITH A PYROCHLORE STRUCTURE, METHODS FOR THEIR PREPARATION, AND CONVERSION PROCESSES UTILIZING SAME.
NOVEL HIGH SURFACE AREA OXIDE COMPOSITIONS WITH A PYROCHLORE STRUCTURE, METHODS FOR THEIR PREPARATION, AND CONVERSION PROCESSES UTILIZING SAME.
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机译:具有热释色结构的新型高表面积氧化物组成,其制备方法和利用其的转化过程。
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PROCESSES FOR THE CONVERSION OF HYDROCARBONS, AND MOST PREFERABLY METHANE, TO HIGHER HYDROCARBONS AND OLEFINS ARE DISCLOSED, INCLUDING CONTACTING THE HYDROCARBONS WITH A MIXED METAL OXIDE CATALYST HAVING THE PYROCHLORE STRUCTURE. PREFERABLY, THESE CATALYST HAVE THE GENERAL FORMULA ANB2O7-X, WHERE A CAN BE VARIOUS MONO-, DI-, AND TRIVALENT METAL CATIONS, B CAN BE VARIOUS TRI-, TETRA-, PENTA-, AND HEXAVALENT METAL CATIONS, 0 N 2.0, AND 0 X 1.0. NOVEL, HIGH SURFACE AREA, MIXED METAL OXIDE CATALYST HAVING THE PYROCHLORE STRUCTURE ARE ALSO DISCLOSED, INCLUDING THOSE HAVING THE FORMULA A2B2O7, WHERE A IS DIVALENT AND B IS NIOBIUM AND/OR TANTALUM, AND THOSE HAVING THE FORMULA A2(SN2XYAY)O7-Z, WHERE A IS BISMUTH AND/OR LEAD, 0.0 Y 1.0, AND 0.0 Z 1.0.
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