Carbon dioxide separation with a two-dimensional polymer membrane.
Carbon dioxide gas separation is important for many environmental and energy applications. Molecular dynamics simulations are used to characterize a two-dimensional hydrocarbon polymer, PG-ES1, that uses a combination of surface adsorption and narrow pores to separate carbon dioxide from nitrogen, oxygen, and methane gases. The CO2 permeance is 3 × 10(5) gas permeation units (GPU). The CO2/N2 selectivity is 60, and the CO2/CH4 selectivity exceeds 500. The combination of high CO2 permeance and selectivity surpasses all known materials, enabling low-cost postcombustion CO2 capture, utilization of landfill gas, and horticulture applications.
Department of Chemistry, Haverford College , Haverford, Pennsylvania 19041, United States.
Joshua
J
Schrier
D000327:Adsorption; D002245:Carbon Dioxide / Q000302:isolation & purification*; D005240:Feasibility Studies; D005374:Filtration / Q000295:instrumentation; D005740:Gases / Q000737:chemistry; D006801:Humans; D008567:Membranes, Artificial; D056004:Molecular Dynamics Simulation; D011108:Polymers / Q000737:chemistry*; D011312:Pressure; D064091:Waste Disposal Facilities / Q000295:instrumentation
D005740:Gases; D008567:Membranes, Artificial; D011108:Polymers; D002245:Carbon Dioxide