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Macroporous oxygen carrier solid with a refractory feldspar/felpdspathoid, method for the preparation thereof, and use thereof in a chemical-looping oxidation-reduction method
Macroporous oxygen carrier solid with a refractory feldspar/felpdspathoid, method for the preparation thereof, and use thereof in a chemical-looping oxidation-reduction method
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机译:具有难熔的长石/羽状类金属的大孔氧气载体固体,其制备方法及其在化学环氧化还原方法中的用途
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摘要
The invention relates to an oxygen carrier solid, its preparation and its use in a method of combustion of a hydrocarbon feedstock by active mass chemical-looping oxidation-reduction, i.e. chemical-looping combustion (CLC). The solid, which is in the form of particles, comprises an oxidation-reduction active mass composed of metal oxide(s) dispersed in a ceramic matrix comprising at least at least one feldspar or feldspathoid with a melting point higher than 1500°C, such as celsian, and has, initially, a specific macroporous texture. The oxygen carrier solid is prepared from a precursor of the ceramic matrix, obtained from a macroporous zeolitic material with zeolite crystals of a specific size, and a precursor of the oxidation-reduction active mass.
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