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Highly selective CO2 removal for one-step liquefied natural gas processing by physisorbents
Madden, D. G., O'Nolan, D., Chen, K.-J., Hua, C., Kumar, A., Pham, T., Forrest, K. A., Space, B., Perry, J. J., Khraisheh, M., & Zaworotko, M. J. (2019). Highly selective CO2 removal for one-step liquefied natural gas processing by physisorbents. Chemical Communications, 55(22), 3219-3222. https://doi.org/10.1039/c9cc00626e
Industrial specifications require CO2 concentrations in natural gas below 50 ppm during liquefaction because of corrosion and CO2 freezing. Herein, we report a physisorbent (TIFSIX-3-Ni) that exhibits new benchmark CO2/CH4 selectivity and fast kinetics, thereby enabling one-step LNG processing to CO2 levels of 25 ppm.