Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume -, Issue -, Pages -Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.3c02120
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In this work, a robust Zr-based metal-organic framework, MIP-203-F, is reported for the selective adsorption of CH4 from CH4/N-2 mixtures. The framework possesses a rhombic 1D micropore structure with pendent -OH groups, which enables efficient adsorption of CH4 and overcomes the trade-off between CH4 capacity and CH4/N-2 selectivity. Experimental investigations confirm the exceptional separation performance of MIP-203-F, highlighting its potential as a promising candidate for the adsorptive separation of CH4/N-2.
Theadsorptive separation of methane (CH4) and nitrogen(N-2) is a challenging yet crucial process in the purificationof unconventional natural gas. In this work, we report a robust Zr-basedmetal-organic framework, termed as MIP-203-F, for the selectiveadsorption of CH4 from CH4/N-2 mixtureswith varied concentrations. The framework possesses a rhombic one-dimensional(1D) micropore structure that is effectively divided into two symmetricwall-shared triangular pores by the presence of pendent -OHgroups, which endow the material with an optimal pore size and a plethoraof synergistic polar sites, facilitating the efficient adsorptionof CH4 with a high polarizability and overcoming the trade-offbetween CH4 capacity and CH4/N-2 selectivity.The exceptional separation performance of MIP-203-F was validatedthrough comprehensive experimental investigations encompassing thermodynamicanalyses, breakthrough experiments, and theoretical calculations.These findings underscore the immense potential of MIP-203-F as apromising candidate for the adsorptive separation of CH4/N-2.
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