Regenerable mixed copper-iron-inert support oxygen carriers for solid fuel chemical looping combustion process
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United States of America Patent
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Dec 20, 2016
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app pub date -
Jun 14, 2011
filing date -
Jun 14, 2011
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Abstract
The disclosure provides an oxygen carrier for a chemical looping cycle, such as the chemical looping combustion of solid carbonaceous fuels, such as coal, coke, coal and biomass char, and the like. The oxygen carrier is comprised of at least 24 weight % (wt %) CuO, at least 10 wt % Fe2O3, and an inert support, and is typically a calcine. The oxygen carrier exhibits a CuO crystalline structure and an absence of iron oxide crystalline structures under XRD crystallography, and provides an improved and sustained combustion reactivity in the temperature range of 600° C.-1000° C. particularly for solid fuels such as carbon and coal.
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