Robust Heterometallic Co<sup>II</sup>La<sup>III</sup><sub>2</sub>–Organic Framework for the Highly Efficient Separation of Acetylene from Light Hydrocarbon Mixtures
Hongtai Chen, Lei Feng, Xiutang Zhang, Zhiyong Gao, Di Sun
Abstract
A highly robust heterometallic CoIILaIII2–organic framework (NUC-19) is synthesized and features 1D rectangle-like channels with a window size of 3.4 × 6.3 Å2 and a carboxyl-group-modified inner surface. NUC-19 exhibits significantly differential uptake for C2H2, C2H4, and CH4, and the ideal adsorbed solution theory selectivities of C2H2/C2H4 (1:99, v/v) and C2H2/CH4 (50:50, v/v) at room temperature can reach up to 4.0 and 79.7, respectively. Fixed-bed dynamic breakthrough experiments under simulated industrial conditions indicate that NUC-19 could efficiently trap C2H2 from mixed gases of C2H2/CH4 and C2H2/C2H4.
Topics & Concepts
ChemistryAcetyleneHydrocarbonAdsorptionAnalytical Chemistry (journal)Physical chemistryOrganic chemistryMetal-Organic Frameworks: Synthesis and ApplicationsCovalent Organic Framework ApplicationsSulfur Compounds in Biology