{'fraction_non_alphanumeric': 0.046313799621928164, 'fraction_numerical': 0.045368620037807186, 'mean_word_length': 5.156976744186046, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 1, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Boosting Ethane/Ethylene Separation by MOFs through the Amino-Functionalization of Pores.

Adsorption technology based on ethane-selective materials is a promising alternative to energy-intensive cryogenic distillation for separating ethane (C2H6) and ethylene (C2H4). We employed pore engineering strategy to tune pore environment of metal-organic framework (MOF) through organic functional groups and boosted the C2H6/C2H4 separation of MOF. Introduction of amino (-NH2) groups into Tb-MOF-76 not only decreased pore sizes but also facilitated multiple guest-host interactions in confined pores. The NH2-functionalized Tb-MOF-76(NH2) has increased C2H6 and C2H4 uptakes and C2H6/C2H4 selectivity. The results of experimental and simulated transient breakthroughs reveal that Tb-MOF-76(NH2) has significantly improved one-step separation performance for  C2H6/C2H4 mixtures with a high C2H4 (>99.95%) productivity of 17.66 L kg-1 compared to 7.53 L kg-1 by Tb-MOF-76, resulting from the suitable pore confinement and accissible -NH2 groups on pore surfaces.