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Composition of alkaline earth metal spinel and kaolin clay minerals, as well as processes for their preparation and their use.
Composition of alkaline earth metal spinel and kaolin clay minerals, as well as processes for their preparation and their use.
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机译:碱土金属尖晶石和高岭土粘土矿物的组成及其制备和使用方法。
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摘要
A process for the production of an alkaline earth metal, aluminum-containing spinel/clay composition comprises: (a) combining (1) an acidic, aluminum-containing composition in which the aluminum is present in a positively charged species, and (2) a basic, alkaline earth metal-containing composition to form a gel mixture; (b) mixing the gel with kaolin clay to form a co-gel; and (c) calcining the co-gel mixture to form the alkaline earth metal, aluminum-containing spinel composition in a clay matrix. Alkaline earth metal, aluminum-containing spinel/clays having both high surface areas and very high attrition resistance, and processes for using spinel/clay compositions, e.g., as sulfur oxide and nitrogen oxide removal agent, are also disclosed.
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