公开(公告)号：US11746020B2

公开(公告)日：2023-09-05

申请号：US16751945

申请日：2020-01-24

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Yi Du ,  Bradley D. Wooler ,  Stuart E. Smith ,  Brenda A. Raich ,  Clarence Chase ,  Lesheng Wang

IPC: C01B32/33 ,  C01B32/354

CPC classification number: C01B32/354 ,  C01B32/33 ,  C01B2210/0051 ,  C01P2006/12

Abstract: Sulfur-crosslinked olefins, particularly sulfur-crosslinked heavy hydrocarbon products having one or more sulfur-crosslinked olefin moieties, may undergo pyrolysis to form sulfur-doped porous carbon having high BET surface area values. Pyrolysis to form the sulfur-doped porous carbon may be particularly efficacious in the presence of a hydroxide base. BET surface areas up to 2000 m2/g or even higher may be obtained. Such sulfur-doped porous carbon may be prepared by combining a heavy hydrocarbon product with sulfur, heating to a first temperature state to form a liquefied reaction mixture containing a sulfur-crosslinked heavy hydrocarbon, homogeneously mixing a hydroxide base with the liquefied reaction mixture, and pyrolyzing the sulfur-crosslinked heavy hydrocarbon to form sulfur-doped porous carbon.