US 12,440,822 B1
Carbon sorbent formulations for carbon dioxide adsorption, and related methods
Steven Dean Dietz, Denver, CO (US); Ambalavanan Jayaraman, Highlands Ranch, CO (US); and Gokhan Omer Alptekin, Boulder, CO (US)
Assigned to Schlumberger Technology Corporation, , TX (US); and TDA Research, Inc., Golden, CO (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US); and TDA Research, Inc., Golden, CO (US)
Filed on May 16, 2024, as Appl. No. 18/666,451.
Int. Cl. B01J 20/22 (2006.01); B01D 53/02 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); C01B 32/30 (2017.01); C01B 32/312 (2017.01); C01B 32/318 (2017.01)
CPC B01J 20/22 (2013.01) [B01D 53/02 (2013.01); B01J 20/28061 (2013.01); B01J 20/28064 (2013.01); B01J 20/28083 (2013.01); B01J 20/3007 (2013.01); B01J 20/3078 (2013.01); B01D 2253/20 (2013.01); B01D 2253/306 (2013.01); B01D 2253/308 (2013.01); B01D 2257/504 (2013.01); C01B 32/30 (2017.08); C01B 32/312 (2017.08); C01B 32/318 (2017.08)] 14 Claims
OG exemplary drawing
 
1. A carbon sorbent for removal of carbon dioxide from a gaseous material, the carbon sorbent comprising:
a carbon content of at least about 90.0 atomic percent at a surface of the carbon sorbent and a nitrogen content of at least about 2.0 atomic percent at the surface of the carbon sorbent, the carbon content and the nitrogen content exclusive of hydrogen,
at least 70 atomic percent of the nitrogen at the surface of the carbon sorbent comprising at least one of pyridone or pyrrole, at least some of the nitrogen at the surface of the carbon sorbent comprising pyridine,
greater than about 2.0 atomic percent of carbon atoms at the surface of the carbon sorbent double bonded to an oxygen atom and single bonded to one of another oxygen atom or a nitrogen atom.