One-step ethylene separation from ternary C<sub>2</sub> hydrocarbon mixture with a robust zirconium metal-organic framework

Yuan Liu; Hanting Xiong; Jingwen Chen; Shixia Chen; Zhenyu Zhou; Zheling Zeng; Shuguang Deng; Jun Wang

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One-step ethylene separation from ternary C₂ hydrocarbon mixture with a robust zirconium metal-organic framework

Full Length Article | Updated：2026-01-06

- One-step ethylene separation from ternary C₂ hydrocarbon mixture with a robust zirconium metal-organic framework
- Chinese Journal of Chemical Engineering Vol. 59, Issue 7, Pages: 9-15(2023)
- Affiliations：
  
  1. School of Chemistry and Chemical Engineering, Nanchang University,Nanchang,China,330031
  2. School for Engineering of Matter, Transport and Energy, Arizona State University,AZ,Tempe,United States,85287
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2023
- Accepted：
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hydrocarbon mixture with a robust zirconium metal-organic framework[J]. 中国化学工程学报, 2023, 59(7): 9-15.
DOI：

hydrocarbon mixture with a robust zirconium metal-organic framework[J]. 中国化学工程学报, 2023, 59(7): 9-15. DOI：

摘要

Abstract

One-step separation of high-purity ethylene (C

) from C

hydrocarbon mixture is critical but challenging because of the very similar molecular sizes and physical properties of C

ethane (C

)

and acetylene (C

). Herein

we report a robust zirconium metal-organic framework (MOF) Zr-TCA (H

TCA = 4

4″-tricarboxytriphenylamine) with suitable pore size (0.6 nm×0.7 nm) and pore environment for direct C

purification from C

gas-mixture. Computational studies indicate that the abundant oxygen atoms and non-polar phenyl rings created favorable pore environments for the preferential binding of C

and C

over C

. As a result

Zr-TCA exhibits not only high C

(2.28 mmol·g

-1

) and C

(2.78 mmol·g

-1

) adsorption capacity but also excellent C

(2.72) and C

(5.64) selectivity

surpassing most of one-step C

purification MOF materials. Dynamic breakthrough experiments confirm that Zr-TCA can produce high-purity C

(99.9%) from a ternary gas mixture (1/9/90 C

) in a single step with a high C

productivity of 5.61 L·kg

-1

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Related Institution

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One-step ethylene separation from ternary C2 hydrocarbon mixture with a robust zirconium metal-organic framework

DOI：

摘要

Abstract

关键词

Keywords

references

One-step ethylene separation from ternary C₂ hydrocarbon mixture with a robust zirconium metal-organic framework