Porous carbon materials for CO2 separation in natural gas

摘要

In some embodiments, the present disclosure pertains to materials for use in CO2 capture in high pressure environments. In some embodiments, the materials include a porous carbon material containing a plurality of pores for use in a high pressure environment. Additional embodiments pertain to methods of utilizing the materials of the present disclosure to capture CO2 from various environments. In some embodiments, the materials of the present disclosure selectively capture CO2 over hydrocarbon species in the environment.

主权项

1. A method of capturing CO2, the method comprising:
associating a CO2 containing environment with a high surface area, porous carbon material that includes a plurality of moieties embedded within the pores of the porous carbon materials,
wherein the plurality of moieties are selected from the group consisting of nitrogen-containing moieties, sulfur-containing moieties, and combinations thereof;wherein the environment is selected from the group consisting of industrial gas streams, natural gas streams, natural gas wells, industrial gas wells, oil and gas fields, and combinations thereof, wherein the environment is pressurized to a total pressure between about 2.5 bar to about 100 bar;wherein the majority of the pores in the porous carbon material have a diameter of about 3 nm or less,wherein the density of the porous carbon material is between about 0.3 g/cm3 to about 4 g/cm3, andwherein the CO2 sorption absolute capacity of the porous carbon material is between about 50 wt % and about 200 wt %; and selectively capturing CO2 over hydrocarbon species in the environment within the pores of the porous carbon material.