Citation: Shanqing YANG, Lulu WANG, Qiang ZHANG, Jiajia LI, Yilong LI, Tongliang HU. A propane-selective metal-organic framework for inverse selective adsorption propane/propylene separation[J]. Chinese Journal of Inorganic Chemistry, ;2025, 41(10): 2138-2148. doi: 10.11862/CJIC.20250154 shu

A propane-selective metal-organic framework for inverse selective adsorption propane/propylene separation

1.
College of Chemistry and Materials Science, Key Laboratory of Analytical Science and Technology of Hebei Province, Hebei University, Baoding, Hebei 071002, China
2.
School of Materials Science and Engineering, Nankai University, Tianjin 300350, China

Corresponding author: Tongliang HU, tlhu@nankai.edu.cn
Received Date: 9 May 2025
Revised Date: 2 September 2025

Figures(6)

We report a robust pillar-layered metal-organic framework, Zn-tfbdc-dabco (tfbdc: tetrafluoroterephthalate, dabco: 1, 4-diazabicyclo[2.2.2]octane), featuring the fluorinated pore environment, for the preferential binding of propane over propylene and thus highly inverse selective separation of propane/propylene mixture. The inverse propane-selective performance of Zn-tfbdc-dabco for the propane/propylene separation was validated by single-component gas adsorption isotherms, isosteric enthalpy of adsorption calculations, ideal adsorbed solution theory calculations, along with the breakthrough experiment. The customized fluorinated networks served as a propane-trap to form more interactions with the exposed hydrogen atoms of propane, as unveiled by the simulation studies at the molecular level. With the advantage of inverse propane-selective adsorption behavior, high adsorption capacity, good cycling stability, and low isosteric enthalpy of adsorption, Zn-tfbdc-dabco can be a promising candidate adsorbent for the challenging propane/propylene separation to realize one-step purification of the target propylene substance.
- metal-organic framework,
- propane/propylene separation,
- inverse selective adsorption separation
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沈阳化工大学材料科学与工程学院沈阳 110142