author = {Peng, Yun-Lei and Pham, Tony and Li, Pengfei and Wang, Ting and Chen, Yao and Chen, Kai-Jie and Forrest, Katherine A. and Space, Brian and Cheng, Peng and Zaworotko, Michael J. and Zhang, Zhenjie},
title = {Robust Ultramicroporous Metal-Organic Frameworks with Benchmark Affinity for Acetylene},
journal = {Angewandte Chemie International Edition},
volume = {57},
number = {34},
pages = {10971-10975},
keywords = {acetylene, gas separation, hydrolytic stability, metal-organic frameworks, ultramicroporous materials},
doi = {10.1002/anie.201806732},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201806732},
eprint = {https://onlinelibrary.wiley.com/doi/pdf/10.1002/anie.201806732},
abstract = {Abstract 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.}