US 12,252,442 B2
Reaction schemes involving acids and bases; reactors comprising spatially varying chemical composition gradients; and associated systems and methods
Yet-Ming Chiang, Weston, MA (US); Leah Ellis, Nova Scotia (CA); and Andres Badel, Deerfield Beach, FL (US)
Assigned to Massachusetts Institute of Technology, Cambridge, MA (US)
Filed by Massachusetts Institute of Technology, Cambridge, MA (US)
Filed on Dec. 22, 2023, as Appl. No. 18/395,376.
Application 18/395,376 is a continuation of application No. 17/423,467, previously published as PCT/US2020/013837, filed on Jan. 16, 2020.
Claims priority of provisional application 62/887,143, filed on Aug. 15, 2019.
Claims priority of provisional application 62/818,604, filed on Mar. 14, 2019.
Claims priority of provisional application 62/800,220, filed on Feb. 1, 2019.
Claims priority of provisional application 62/793,294, filed on Jan. 16, 2019.
Prior Publication US 2024/0132400 A1, Apr. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 19/00 (2006.01); C04B 2/08 (2006.01); C04B 7/06 (2006.01)
CPC C04B 2/08 (2013.01) [B01J 19/0033 (2013.01); C04B 7/06 (2013.01); B01J 2219/00029 (2013.01); B01J 2219/00033 (2013.01); C04B 2290/20 (2013.01); Y02P 40/121 (2015.11); Y02P 40/18 (2015.11)] 20 Claims
OG exemplary drawing
 
1. A method, 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.
 
11. A method, comprising:
producing an acid and a base via electrolysis;
dissolving a material comprising calcium using the acid to produce ions comprising calcium, wherein dissolving the material in the acid is 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
mixing the solid calcium hydroxide and/or a downstream product thereof with a pozzolanic material to form a cement.