A robust indium-organic framework with open tubular channels for efficient separation of acetylene  

作　　者：Yong-Zhi Li Gang-Ding Wang Fan Xu Qing Yin Danyang Zhao Jiqiu Qi Yanwei Sui Lei Hou Yao-Yu Wang 

机构地区：[1]School of Materials and Physics,China University of Mining and Technology,Xuzhou 221116,China [2]Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education,Shaanxi Key Laboratory of Physico-Inorganic Chemistry,College of Chemistry&Materials Science,Northwest University,Xi’an 710069,China

出　　处：《Nano Research》2024年第4期3139-3146,共8页纳米研究（英文版）

基　　金：supported by the Fundamental Research Funds for the Central Universities(No.2022QN1089).

摘　　要：Considering the tremendous applications and purification requirement of acetylene(C_(2)H_(2)),seeking appropriate adsorbents with high capacity and selectivity is a vital task and remains an enduring challenge.Herein,we designed and synthesized a robust three-dimensional(3D)indium-organic framework([(Me)_(2)NH_(2)][In(L6)_(0.5)(IPA)_(0.5)]·DMA·2H_(2)O(In-L6-IPA,DMA=dimethylammonium,IPA=isopropyl alcohol))featuring two types of one-dimensional(1D)tubular channels.The activated In-L6-IPA displayed high loading for C_(2)H_(2)(104.4 cm^(3)·g^(-1),the second highest value among all reported indium-based metal-organic frameworks(MOFs))and simultaneously selective adsorption for C_(2)H_(2) over CO_(2),C_(2)H_(6),and ethylene(C_(2)H_(4))at 298 K under 100 kPa.Molecular modelling revealed that the porous wall of In-L6-IPA provides more and stronger multiple interactions for C_(2)H_(2) than CO_(2),C_(2)H_(6),and C_(2)H_(4) containing C–H···π,C–H···O,and O···πinteractions.Breakthrough experiments validated the actual separation ability for various ratios of binary C_(2)H_(2)/C_(2)H_(4) and C_(2)H_(2)/CO_(2) mixtures as well as equimolar ternary C_(2)H_(2)/C_(2)H_(4)/CO_(2) and C_(2)H_(2)/C_(2)H_(4)/C_(2)H_(6) mixtures with excellent reusability.

关 键 词：indium-organic framework crystal structure gas adsorption acetylene(C_(2)H_(2))separation 

分 类 号：O64[理学—物理化学]