@article {Chen241,
	author = {Chen, Kai-Jie and Madden, David G. and Mukherjee, Soumya and Pham, Tony and Forrest, Katherine A. and Kumar, Amrit and Space, Brian and Kong, Jie and Zhang, Qiu-Yu and Zaworotko, Michael J.},
	title = {Synergistic sorbent separation for one-step ethylene purification from a four-component mixture},
	volume = {366},
	number = {6462},
	pages = {241--246},
	year = {2019},
	doi = {10.1126/science.aax8666},
	publisher = {American Association for the Advancement of Science},
	abstract = {Purification of ethylene from other gases produced during its synthesis, such as acetylene, ethane, and carbon dioxide, is an energy-intensive process. Chen et al. use a mixture of microporous metal-organic framework physisorbents that are selective for one of these four gases. A series of sorbents in a packed-bed geometry produced ethylene pure enough for making polymers.Science, this issue p. 241Purification of ethylene (C2H4), the largest-volume product of the chemical industry, currently involves energy-intensive processes such as chemisorption (CO2 removal), catalytic hydrogenation (C2H2 conversion), and cryogenic distillation (C2H6 separation). Although advanced physisorbent or membrane separation could lower the energy input, one-step removal of multiple impurities, especially trace impurities, has not been feasible. We introduce a synergistic sorbent separation method for the one-step production of polymer-grade C2H4 from ternary (C2H2/C2H6/C2H4) or quaternary (CO2/C2H2/C2H6/C2H4) gas mixtures with a series of physisorbents in a packed-bed geometry. We synthesized ultraselective microporous metal-organic materials that were readily regenerated, including one that was selective for C2H6 over CO2, C2H2, and C2H4.},
	issn = {0036-8075},
	URL = {https://science.sciencemag.org/content/366/6462/241},
	eprint = {https://science.sciencemag.org/content/366/6462/241.full.pdf},
	journal = {Science}
}