期刊
SCIENCE
卷 366, 期 6462, 页码 241-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aax8666
关键词
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资金
- Science Foundation Ireland [13/RP/B2549, 16/IA/4624]
- National Natural Science Foundation of China [21805227]
- Fundamental Research Funds for the Central Universities [3102017jc01001]
- NSF [DMR-1607989]
- Major Research Instrumentation Program [CHE-153159]
- ACS Petroleum Research Fund [56673-ND6]
- XSEDE grant [TG-DMR090028]
Purification 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.
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