Microporous metal–organic framework with dual functionalities for highly efficient removal of acetylene from ethylene/acetylene mixtures

Tong-Liang Hu, Hailong Wang, Bin Li, Rajamani Krishna, Hui Wu, Wei Zhou, Yunfeng Zhao, Yu Han, Xue Wang, Weidong Zhu, Zizhu Yao, Shengchang Xiang and Banglin Chen ()
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Tong-Liang Hu: TKL of Metal- and Molecule-Based Material Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University
Hailong Wang: University of Texas at San Antonio, One UTSA Circle
Bin Li: University of Texas at San Antonio, One UTSA Circle
Rajamani Krishna: Van ‘t Hoff Institute for Molecular Sciences, University of Amsterdam
Hui Wu: NIST Center for Neutron Research
Wei Zhou: NIST Center for Neutron Research
Yunfeng Zhao: Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology
Yu Han: Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology
Xue Wang: Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University
Weidong Zhu: Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University
Zizhu Yao: College of Chemistry and Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, Fujian Normal University
Shengchang Xiang: College of Chemistry and Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, Fujian Normal University
Banglin Chen: University of Texas at San Antonio, One UTSA Circle

Nature Communications, 2015, vol. 6, issue 1, 1-9

Abstract: Abstract The removal of acetylene from ethylene/acetylene mixtures containing 1% acetylene is a technologically very important, but highly challenging task. Current removal approaches include the partial hydrogenation over a noble metal catalyst and the solvent extraction of cracked olefins, both of which are cost and energy consumptive. Here we report a microporous metal–organic framework in which the suitable pore/cage spaces preferentially take up much more acetylene than ethylene while the functional amine groups on the pore/cage surfaces further enforce their interactions with acetylene molecules, leading to its superior performance for this separation. The single X-ray diffraction studies, temperature dependent gas sorption isotherms, simulated and experimental column breakthrough curves and molecular simulation studies collaboratively support the claim, underlying the potential of this material for the industrial usage of the removal of acetylene from ethylene/acetylene mixtures containing 1% acetylene at room temperature through the cost- and energy-efficient adsorption separation process.

Date: 2015
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DOI: 10.1038/ncomms8328

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