A kind of MOF crystal material with water nanotube, preparation method and application in propylene / propane separation

By introducing water nanotubes into the Cu10O13 cluster MOF material and utilizing their dynamic expansion and contraction mechanism, the problems of insufficient selectivity and efficiency in propylene/propane separation were solved, and a high-efficiency and low-energy separation process for high-purity propylene was achieved.

CN116288729BActive Publication Date: 2026-07-14NANJING TECH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING TECH UNIV
Filing Date
2023-02-20
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing porous materials lack selectivity and efficiency in propylene/propane separation, resulting in difficulties in harvesting high-purity propylene and high energy consumption.

Method used

A novel MOF material based on Cu10O13 clusters is used to achieve highly selective adsorption of propylene by introducing water nanotubes into its one-dimensional channels and utilizing the dynamic expansion and contraction mechanism of the water nanotubes. Combined with a highly stable framework, this ensures long-term use.

Benefits of technology

It achieves highly selective propylene/propane separation with propylene purity up to 98.8%, significantly reduces energy consumption, and the water nanotubes can be recovered through a simple regeneration process, making it suitable for the separation of complex mixtures.

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Abstract

The application relates to a MOF crystal material with water nanotubes, a preparation method and application in propylene / propane separation, and belongs to the technical field of MOF materials and separation purposes. The application proposes a MOF (referred to as NTU-85) based on a new super-tetrahedron cluster (Cu 10 O 13 ) which has one-dimensional (1D) channels composed of lattice water molecules. After the accurate removal of the intermediate water molecules, the second spherical water molecule in the MOF establishes a nanotube with a window size of about 0.6 nm under the enhancement of the large copper cluster and the electronegative F atom (referred to as NTU-85-WNT). The NTU-85-WNT shows a special response to C3H6 but not to C3H8, and has a C3H6 / C3H8 selectivity of >1570 among all porous materials.
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