A mechanochemically carbonated clay, methods of its production and uses thereof
AssigneeCarbon Upcycling Technologies Inc.
InventorApoorva Sinha
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Abstract
The present invention relates a mechanochemically carbonated clay. The invention further relates to methods of its production and uses thereof. The invention further relates to compositions comprising the mechanochemically carbonated clay and a further material selected from the group consisting of asphalt, cement, polymers and combinations thereof. The invention further relates to concrete and methods of their preparation.
Claims21
-16. (canceled)
A mechanochemically carbonated clay obtainable by carbonation of a clay precursor, wherein the mechanochemically carbonated clay has a specific surface area of less than 50 m2/g and wherein,
- the ratio of the CO2 content of the mechanochemically carbonated clay to the CO2 content of the clay precursor is at least 1.1:1, wherein the CO2 content is determined as the mass loss above 450° C. measured by TGA employing a temperature trajectory wherein the temperature was increased from room temperature to 800° C. at a rate of 10° C./min;
- and/or
- the ratio of the total carbon content of the mechanochemically carbonated clay to the total carbon content of the clay precursor is at least 1.3:1.
A method for producing a mechanochemically carbonated clay, said method comprising the following steps:
- a) providing a feedstock comprising a clay precursor;
- b) providing a gas comprising at least 0.5 vol % CO2;
- c) introducing said feedstock and said gas into a mechanical agitation unit;
- and
- d) subjecting the material of said feedstock to a mechanical agitation operation in the presence of said gas in said mechanical agitation unit.
Dependencies are inferred from the claim text.