Methods and systems for producing calcium oxide and calcium hydroxide from aragonite
AssigneesNant Holdings IP, LLC, Calcean Minerals and Materials, LLC
InventorsPatrick Soon-Shiong, Anthony Myers
Life of this patent
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Abstract
Methods and systems for making calcium oxide (CaO), carbon dioxide (CO2) and/or calcium hydroxide (Ca(OH)2) from aragonite, for example, oolitic aragonite, are provided. The method can include applying solar energy, for example, by focusing one or more mirrors in one or more heliostats, to heat a reactant mixture in a vessel. The reactant mixture includes oolitic aragonite and can be heated to a temperature from 500° C. to 950° C. The system can include a vessel and a means for applying solar energy to heat a supply of oolitic aragonite disposed inside the vessel. Methods of converting the CO2 to ethanol, ethylene, graphene, and/or methane are also provided.
Claims19
A method of making CaO from oolitic aragonite, the method comprising:
- applying solar energy to heat a reactant mixture in a vessel, wherein the reactant mixture comprises oolitic aragonite and the reactant mixture is heated to a temperature from 500° C. to 950° C., wherein the solar energy is applied by focusing one or more mirrors in one or more heliostats.
A method for forming one or more layers of graphene from CO2, the method comprising:
- applying solar energy to heat a reactant mixture in a vessel, wherein the reactant mixture comprises oolitic aragonite and the reactant mixture is heated to a temperature from 500° C. to 950° C. to form CaO and CO2, wherein the solar energy is applied by focusing one or more mirrors in one or more heliostats;
- capturing the CO2;
- and
- delivering the CO2 and at least one reducing agent to a metallic alloy substrate in a heating zone of a reactor to form the one or more layers of graphene on a surface of the metallic alloy substrate, wherein the metallic alloy substrate comprises a copper and palladium alloy (Cu—Pd alloy).
A method for converting CO2 to ethanol, the method comprising:
- applying solar energy to heat a reactant mixture in a vessel, wherein the reactant mixture comprises oolitic aragonite and the reactant mixture is heated to a temperature from 500° C. to 950° C. to form CaO and CO2, wherein the solar energy is applied by focusing one or more mirrors in one or more heliostats;
- capturing the CO2;
- contacting the CO2 with an electrocatalyst, wherein the electrocatalyst comprises carbon nanospikes and copper nanoparticles disposed on the carbon nanospikes;
- and
- applying a voltage to the electrocatalyst to produce ethanol.
Dependencies are inferred from the claim text.