A cobalt-based metal organic framework material, a preparation method thereof and application thereof in propylene ethylene separation

The prepared cobalt-based metal organic framework material solves the problem of high energy consumption in the separation of ethylene and propylene, and achieves efficient selective separation at room temperature and pressure. It is suitable for propylene and ethylene separation and has good economy and safety.

CN119823410BActive Publication Date: 2025-10-17JILIN UNIVERSITY
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Patent Information

Application Number
CN202510045757.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-01-13
Publication Date
2025-10-17
Estimated Expiration
2045-01-13

AI Technical Summary

Technical Problem

Existing technologies consume high energy in the separation of ethylene and propylene, making it difficult to achieve efficient and low-cost separation, especially when the molecular sizes and physicochemical properties of polymer-grade C3H6 and C2H4 are similar.

Method used

Cobalt-based metal-organic framework materials are used to prepare a Co2+ coordination mode with a three-dimensional framework structure and a trinuclear cobalt cluster structural unit through a solvent thermal reaction. Combined with 4,4'-(2,6-pyrazinediyl)dibenzoic acid organic ligand, an xmz topological type material is formed with high specific surface area and porosity, which is used for propylene and ethylene separation at room temperature and pressure.

Benefits of technology

It realizes the selective adsorption separation of propylene and ethylene under low energy consumption, improves economic benefits and energy efficiency, is suitable for propylene and ethylene separation, and has good safety and separation effect.

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Abstract

The present application belongs to the technical field of gas adsorption separation, and particularly relates to a cobalt-based metal organic framework material, a preparation method thereof and application thereof in propylene ethylene separation. The cobalt-based metal organic framework material provided by the present application can preferentially adsorb propylene in a propylene and ethylene mixture, and separation can be implemented at normal temperature and pressure, thereby having low energy consumption and good safety, and thus maximizing economic benefits and energy efficiency. The cobalt-based metal organic framework material provided by the present application has a high specific surface area, and can exhibit high selective separation effect on propylene ethylene mixed gas separation at normal temperature and pressure, and thus has good application prospect. The cobalt-based metal organic framework material provided by the present application can selectively adsorb propylene, and is suitable for propylene and ethylene separation.
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