Abstract: Reaction schemes involving acids and bases; reactors comprising spatially varying chemical composition gradients (e.g., spatially varying pH gradients), and associated systems and methods, are generally described. For example, methods comprising producing an acid; dissolving a material comprising calcium in the acid to produce calcium ions; treating the calcium ions to produce solid calcium hydroxide and/or calcium oxide; and utilizing the solid calcium hydroxide and/or calcium oxide in a downstream process to produce a cement, wherein the downstream process comprises heating the solid calcium hydroxide and/or calcium oxide in a kiln are described.

Abstract: Reaction schemes involving acids and bases; reactors comprising spatially varying chemical composition gradients (e.g., spatially varying pH gradients), and associated systems and methods, are generally described.

Abstract: Chemical reaction devices involving acid and/or base, and related systems and methods, are generally described.

Abstract: Reaction schemes involving acids and bases; reactors comprising spatially varying chemical composition gradients (e.g., spatially varying pH gradients), and associated systems and methods, are generally described. For example, methods comprising producing an acid and a base via electrolysis; dissolving a material comprising calcium using the acid to produce ions comprising calcium in a region of a reactor with a pH of 6 or less; precipitating solid calcium hydroxide from the ions comprising calcium using the base in a region of a reactor with a pH of 10 or higher; and utilizing the calcium hydroxide in a downstream process to form a cement are described.

Abstract: Organic redox-active polymer-based electrodes for electrochemical cells and electrochemical cells (e.g., aqueous electrochemical cells) comprising them are presented herein. Additionally, methods of preparation of the same are presented.

Abstract: Reaction schemes involving acids and bases; reactors comprising spatially varying chemical composition gradients (e.g., spatially varying pH gradients), and associated systems and methods, are generally described.

Abstract: Reaction schemes involving acids and bases; reactors comprising spatially varying chemical composition gradients (e.g., spatially varying pH gradients), and associated systems and methods, are generally described.

Abstract: Chemical reaction devices involving acid and/or base, and related systems and methods, are generally described.

Abstract: Chemical reaction devices involving acid and/or base, and related systems and methods, are generally described.

Abstract: Multi-phase electrochemical cells and related systems and methods are generally described.

Abstract: Multi-phase electrochemical cells and related systems and methods are generally described.

Abstract: Chemical reaction devices involving acid and/or base, and related systems and methods, are generally described.

Abstract: Reaction schemes involving acids and bases; reactors comprising spatially varying chemical composition gradients (e.g., spatially varying pH gradients), and associated systems and methods, are generally described.