4-Connected Cobalt-Based 3D Framework with a High Affinity for Acetylene
- 20 July 2020
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 59 (14), 9461-9464
- https://doi.org/10.1021/acs.inorgchem.0c01168
Abstract
A 3D framework, [Copip]center dot(H2O)(0.3) (NbU-11), was synthesized by a hydrothermal method. Although there are no open metal sites and Lewis basic adsorption sites, gas adsorption measurements and ideal adsorbed solution theory (IAST) calculations all reveal that NbU-11 shows a high affinity for acetylene (C2H2). Remarkably, the adsorption selectivity values predicted by IAST for equimolar binary C2H2/CH4 and C2H4/CH4 mixtures are up to 175.8 and 42.8 at 295 K and 1 bar, respectively. Moreover, gas mixture breakthrough tests confirm that NbU-11 exhibits moderately high separation selectivities for C2H2/CO2 and C2H2/C2H4 as well as excellent separation selectivities for C2H2/CH4 and C2H4/CH4. Such an excellent performance makes NbU-11 a promising adsorbent for C2H2 capture.Funding Information
- National Natural Science Foundation of China (21622607, 21701091, 21761132009)
- Natural Science Foundation of Zhejiang Province (LR18B060002)
- State Key Laboratory of Physical Chemistry of the Solid Surface, Xiamen University (201707)
- Major Special Projects of the Plan ?Science and Technology Innovation 2025? in Ningbo (2018B10016)
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