US 11,884,547 B2
Chalcogen-grafted carbon materials and processes for their preparation
Richard Martel, Montreal (CA); Rafaella Oliveira Do Nascimento, Kitchener (CA); and Pierre Lévesque, Kitchener (CA)
Assigned to Valorisation-Recherche, Limited Partnership, Montreal (CA)
Appl. No. 17/270,298
Filed by Valorisation-Recherche, Montreal (CA)
PCT Filed Aug. 23, 2019, PCT No. PCT/CA2019/051161
§ 371(c)(1), (2) Date Feb. 22, 2021,
PCT Pub. No. WO2020/037428, PCT Pub. Date Feb. 27, 2020.
Claims priority of provisional application 62/722,524, filed on Aug. 24, 2018.
Prior Publication US 2021/0179433 A1, Jun. 17, 2021
Int. Cl. C01B 32/194 (2017.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01)
CPC C01B 32/194 (2017.08) [B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01P 2002/82 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A chalcogen-grafted carbon material, wherein the chalcogen-grafted carbon material is a polyaromatic carbon material comprising a polyaromatic fused ring system, and the chalcogen X is covalently linked to the polyaromatic carbon material via C═X bonds on outside rings of said polyaromatic fused ring system and/or C—X—C bonds in the form of 3-membered rings on a surface of said polyaromatic fused ring system, wherein:
the chalcogen is a chalcogen other than oxygen,
C is a carbon atom from the polyaromatic fused ring system, and
wherein the molar ratio of carbon:chalcogen in the chalcogen-grafted carbon material is within the range of from 2:1 to 1000:1.