Citation: Zhenyu Ji, Yucheng Xiao, Yunzhe Zhou, Ting Zhao, Lingna Yang, Cheng Chen, Mingyan Wu, Maochun Hong. A stable Zr-MOF with trap-and-flow channels for efficient natural gas purification[J]. Chinese Journal of Structural Chemistry, ;2026, 45(4): 100862. doi: 10.1016/j.cjsc.2025.100862 shu

A stable Zr-MOF with trap-and-flow channels for efficient natural gas purification

Separating natural gas to obtain high-purity CH4 is of great significance for tackling pressing energy crises and mitigating environmental issues. However, the low C3H8 and C2H6 capture efficiency of current adsorbents frequently results in inadequate CH4 purification. In this work, we have successfully constructed a dual-pore Zr-MOF (FJI-W60), in which the larger channels facilitate rapid molecular diffusion, while the smaller pores can create strong interactions with C3H8 and C2H6 molecules. These significant features collectively ensure the highly efficient adsorption of C3H8 and C2H6. Static and dynamic adsorption experiments reveal that FJI-W60 exhibits high uptake capacity and rapid adsorption kinetics for both C3H8 and C2H6. The practical breakthrough experiments validate the outstanding CH4 purification performance of FJI-W60. At 298 K, 8.6 mol kg-1 of high-purity can be obtained from the 5/10/85 C3H8/C2H6/CH4 (v/v/v) mixture, which exceeds most CH4-purification materials.
- Metal-organic framework,
- Trap-and-flow channels,
- Gas separation,
- Natural gas
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