Robust Ultramicroporous Metal–Organic Frameworks with Benchmark Affinity for Acetylene
acetylene, gas separation, hydrolytic stability, metal–organic frameworks, ultramicroporous materials
Digital Object Identifier (DOI)
Highly selective separation and/or purification of acetylene from various gas mixtures is a relevant and difficult challenge that currently requires costly and energy-intensive chemisorption processes. Two ultramicroporous metal–organic framework physisorbents, NKMOF-1-M (M=Cu or Ni), offer high hydrolytic stability and benchmark selectivity towards acetylene versus several gases at ambient temperature. The performance of NKMOF-1-M is attributed to their exceptional acetylene binding affinity as revealed by modelling and several experimental studies: in situ single-crystal X-ray diffraction, FTIR, and gas mixture breakthrough tests. NKMOF-1-M exhibit better low-pressure uptake than existing physisorbents and possesses the highest selectivities yet reported for C2H2/CO2 and C2H2/CH4. The performance of NKMOF-1-M is not driven by the same mechanism as current benchmark physisorbents that rely on pore walls lined by inorganic anions.
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Citation / Publisher Attribution
Angewandte Chemie International Edition, v. 57, issue 34, p. 10971-10975
Scholar Commons Citation
Peng, Yun-Lei; Pham, Tony; Li, Pengfei; Wang, Ting; Chen, Yao; Chen, Kai-Jie; Forrest, Katherine A.; Space, Brian; Cheng, Peng; Zaworotko, Michael J.; and Zhang, Zhenjie, "Robust Ultramicroporous Metal–Organic Frameworks with Benchmark Affinity for Acetylene" (2018). Chemistry Faculty Publications. 147.