US 12,006,212 B2
Systems and methods for generating hydrogen and magnetite from rock
Thomas Darrah, Westerville, OH (US); Vikram Rao, Chapel Hill, NC (US); and Colin Whyte, Grove City, OH (US)
Assigned to Ohio State Innovation Foundation, Columbus, OH (US)
Filed by Ohio State Innovation Foundation, Columbus, OH (US)
Filed on Apr. 18, 2023, as Appl. No. 18/302,702.
Application 18/302,702 is a continuation of application No. 17/815,914, filed on Jul. 28, 2022, abandoned.
Claims priority of provisional application 63/203,814, filed on Jul. 30, 2021.
Prior Publication US 2023/0271827 A1, Aug. 31, 2023
Int. Cl. C01B 3/00 (2006.01); C01B 3/04 (2006.01); C01B 3/06 (2006.01); C01F 5/24 (2006.01); C01G 49/08 (2006.01); C22B 1/00 (2006.01); C22B 3/00 (2006.01); C22B 23/00 (2006.01); C22B 26/12 (2006.01); C22B 34/32 (2006.01); C22B 59/00 (2006.01)
CPC C01B 3/061 (2013.01) [C01B 3/04 (2013.01); C01F 5/24 (2013.01); C01G 49/08 (2013.01); C22B 1/00 (2013.01); C22B 23/005 (2013.01); C22B 23/0415 (2013.01); C22B 26/12 (2013.01); C22B 34/32 (2013.01); C22B 59/00 (2013.01); C01B 2203/0272 (2013.01); C01B 2203/06 (2013.01); C01B 2203/1258 (2013.01); C01B 2203/86 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for sequestering carbon and generating hydrogen and magnetite from rock, the method comprising:
obtaining an ore containing olivine or pyroxene;
introducing the ore into a reactor that is operable at temperatures above ambient temperature and pressures above atmospheric pressure;
introducing carbon dioxide into the reactor at a first temperature for a first residence time to react with the ore to generate magnesium carbonate;
introducing water into the reactor at a second temperature for a second residence time to react with the ore to generate magnetite and hydrogen gas;
removing the hydrogen gas from the reactor; and
removing any remaining ore from the reactor.