US 2022/0081311 A1
Sustainable calcium hydroxide production for green cement
(22) 24.08.2021
(43) 17.03.2022
(57) A method of making a composition of matter comprising calcium hydroxide. The method includes the steps of contacting a calcium-containing molecule with an aqueous solution of a water-soluble salt having ammonium cation and a counter-anion, under conditions effective to yield a compound containing calcium and the counter-anion; and reacting the compound comprising calcium and the counter-anion with ammonia and water under conditions to yield calcium hydroxide.
(71) Wisconsin Alumni Research Foundation, Madison, WI (US)
