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A Microporous Titanate‐Based Metal‐Organic Framework for Efficient Separation of Acetylene from Carbon Dioxide
Author(s) -
Chen Huanxin,
Li Xin,
Liu Miaoyu,
Zhang Yuxun,
Liu Yong,
Wen HuiMin
Publication year - 2021
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202100109
Subject(s) - microporous material , acetylene , selectivity , adsorption , metal organic framework , chemical engineering , molecule , carbon dioxide , petrochemical , hydrogen bond , gas separation , volatility (finance) , chemistry , materials science , inorganic chemistry , organic chemistry , catalysis , membrane , financial economics , economics , biochemistry , engineering
Separation of acetylene (C 2 H 2 ) and carbon dioxide (CO 2 ) is of prime importance in the petrochemical industry, but their similarities in molecular size and volatility make it particularly difficult. A desired adsorbent for highly efficient C 2 H 2 /CO 2 separation should have high selectivity and C 2 H 2 uptake simultaneously, and the introduction of functional groups into MOFs is an effective strategy to achieve this purpose. Herein, we report a titanium‐based MOF material (MIL‐125‐NH 2 ), featuring the suitable pore sizes and amino‐functionalized pore surfaces to show the preferential adsorption of C 2 H 2 over CO 2 with both high C 2 H 2 uptake and C 2 H 2 /CO 2 selectivity. Theoretical simulation results indicate that the preferential C 2 H 2 adsorption is mainly attributed to multiple hydrogen bonding interactions between C 2 H 2 molecule and amino functional groups.