Interaction-selective molecular sieving adsorbent for direct separation of ethylene from senary C2-C4 olefin/paraffin mixture

Yong Peng; Hanting Xiong; Peixin Zhang; Zhiwei Zhao; Xing Liu; Shihui Tang; Yuan Liu; Zhenliang Zhu; Weizhen Zhou; Zhenning Deng; Junhui Liu; Yao Zhong; Zeliang Wu; Jingwen Chen; Zhenyu Zhou; Shixia Chen; Shuguang Deng; Jun Wang

doi:10.1038/s41467-024-45004-9

Interaction-selective molecular sieving adsorbent for direct separation of ethylene from senary C₂-C₄ olefin/paraffin mixture

Yong Peng, Hanting Xiong, Peixin Zhang, Zhiwei Zhao, Xing Liu, Shihui Tang, Yuan Liu, Zhenliang Zhu, Weizhen Zhou, Zhenning Deng, Junhui Liu, Yao Zhong, Zeliang Wu, Jingwen Chen, Zhenyu Zhou, Shixia Chen, Shuguang Deng, Jun Wang

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Olefin/paraffin separations are among the most energy-intensive processes in the petrochemical industry, with ethylene being the most widely consumed chemical feedstock. Adsorptive separation utilizing molecular sieving adsorbents can optimize energy efficiency, whereas the size-exclusive mechanism alone cannot achieve multiple olefin/paraffin sieving in a single adsorbent. Herein, an unprecedented sieving adsorbent, BFFOUR-Cu-dpds (BFFOUR = BF₄^-, dpds = 4,4’-bipyridinedisulfide), is reported for simultaneous sieving of C₂-C₄ olefins from their corresponding paraffins. The interlayer spaces can be selectively opened through stronger guest-host interactions induced by unsaturated C = C bonds in olefins, as opposed to saturated paraffins. In equimolar six-component breakthrough experiments (C₂H₄/C₂H₆/C₃H₆/C₃H₈/n-C₄H₈/n-C₄H₁₀), BFFOUR-Cu-dpds can simultaneously divide olefins from paraffins in the first column, while high-purity ethylene (> 99.99%) can be directly obtained through the subsequent column using granular porous carbons. Moreover, gas-loaded single-crystal analysis, in-situ infrared spectroscopy measurements, and computational simulations demonstrate the accommodation patterns, interaction bonds, and energy pathways for olefin/paraffin separations.

Original language	English (US)
Article number	625
Journal	Nature communications
Volume	15
Issue number	1
DOIs	https://doi.org/10.1038/s41467-024-45004-9
State	Published - Dec 2024
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy

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10.1038/s41467-024-45004-9

Cite this

Peng, Y., Xiong, H., Zhang, P., Zhao, Z., Liu, X., Tang, S., Liu, Y., Zhu, Z., Zhou, W., Deng, Z., Liu, J., Zhong, Y., Wu, Z., Chen, J., Zhou, Z., Chen, S., Deng, S., & Wang, J. (2024). Interaction-selective molecular sieving adsorbent for direct separation of ethylene from senary C₂-C₄ olefin/paraffin mixture. Nature communications, 15(1), Article 625. https://doi.org/10.1038/s41467-024-45004-9

Peng, Y, Xiong, H, Zhang, P, Zhao, Z, Liu, X, Tang, S, Liu, Y, Zhu, Z, Zhou, W, Deng, Z, Liu, J, Zhong, Y, Wu, Z, Chen, J, Zhou, Z, Chen, S, Deng, S & Wang, J 2024, 'Interaction-selective molecular sieving adsorbent for direct separation of ethylene from senary C₂-C₄ olefin/paraffin mixture', Nature communications, vol. 15, no. 1, 625. https://doi.org/10.1038/s41467-024-45004-9

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title = "Interaction-selective molecular sieving adsorbent for direct separation of ethylene from senary C2-C4 olefin/paraffin mixture",

abstract = "Olefin/paraffin separations are among the most energy-intensive processes in the petrochemical industry, with ethylene being the most widely consumed chemical feedstock. Adsorptive separation utilizing molecular sieving adsorbents can optimize energy efficiency, whereas the size-exclusive mechanism alone cannot achieve multiple olefin/paraffin sieving in a single adsorbent. Herein, an unprecedented sieving adsorbent, BFFOUR-Cu-dpds (BFFOUR = BF4-, dpds = 4,4{\textquoteright}-bipyridinedisulfide), is reported for simultaneous sieving of C2-C4 olefins from their corresponding paraffins. The interlayer spaces can be selectively opened through stronger guest-host interactions induced by unsaturated C = C bonds in olefins, as opposed to saturated paraffins. In equimolar six-component breakthrough experiments (C2H4/C2H6/C3H6/C3H8/n-C4H8/n-C4H10), BFFOUR-Cu-dpds can simultaneously divide olefins from paraffins in the first column, while high-purity ethylene (> 99.99%) can be directly obtained through the subsequent column using granular porous carbons. Moreover, gas-loaded single-crystal analysis, in-situ infrared spectroscopy measurements, and computational simulations demonstrate the accommodation patterns, interaction bonds, and energy pathways for olefin/paraffin separations.",

author = "Yong Peng and Hanting Xiong and Peixin Zhang and Zhiwei Zhao and Xing Liu and Shihui Tang and Yuan Liu and Zhenliang Zhu and Weizhen Zhou and Zhenning Deng and Junhui Liu and Yao Zhong and Zeliang Wu and Jingwen Chen and Zhenyu Zhou and Shixia Chen and Shuguang Deng and Jun Wang",

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doi = "10.1038/s41467-024-45004-9",

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AU - Peng, Yong

AU - Xiong, Hanting

AU - Zhang, Peixin

AU - Zhao, Zhiwei

AU - Liu, Xing

AU - Tang, Shihui

AU - Liu, Yuan

AU - Zhu, Zhenliang

AU - Zhou, Weizhen

AU - Deng, Zhenning

AU - Liu, Junhui

AU - Zhong, Yao

AU - Wu, Zeliang

AU - Chen, Jingwen

AU - Zhou, Zhenyu

AU - Chen, Shixia

AU - Deng, Shuguang

AU - Wang, Jun

PY - 2024/12

Y1 - 2024/12

N2 - Olefin/paraffin separations are among the most energy-intensive processes in the petrochemical industry, with ethylene being the most widely consumed chemical feedstock. Adsorptive separation utilizing molecular sieving adsorbents can optimize energy efficiency, whereas the size-exclusive mechanism alone cannot achieve multiple olefin/paraffin sieving in a single adsorbent. Herein, an unprecedented sieving adsorbent, BFFOUR-Cu-dpds (BFFOUR = BF4-, dpds = 4,4’-bipyridinedisulfide), is reported for simultaneous sieving of C2-C4 olefins from their corresponding paraffins. The interlayer spaces can be selectively opened through stronger guest-host interactions induced by unsaturated C = C bonds in olefins, as opposed to saturated paraffins. In equimolar six-component breakthrough experiments (C2H4/C2H6/C3H6/C3H8/n-C4H8/n-C4H10), BFFOUR-Cu-dpds can simultaneously divide olefins from paraffins in the first column, while high-purity ethylene (> 99.99%) can be directly obtained through the subsequent column using granular porous carbons. Moreover, gas-loaded single-crystal analysis, in-situ infrared spectroscopy measurements, and computational simulations demonstrate the accommodation patterns, interaction bonds, and energy pathways for olefin/paraffin separations.

AB - Olefin/paraffin separations are among the most energy-intensive processes in the petrochemical industry, with ethylene being the most widely consumed chemical feedstock. Adsorptive separation utilizing molecular sieving adsorbents can optimize energy efficiency, whereas the size-exclusive mechanism alone cannot achieve multiple olefin/paraffin sieving in a single adsorbent. Herein, an unprecedented sieving adsorbent, BFFOUR-Cu-dpds (BFFOUR = BF4-, dpds = 4,4’-bipyridinedisulfide), is reported for simultaneous sieving of C2-C4 olefins from their corresponding paraffins. The interlayer spaces can be selectively opened through stronger guest-host interactions induced by unsaturated C = C bonds in olefins, as opposed to saturated paraffins. In equimolar six-component breakthrough experiments (C2H4/C2H6/C3H6/C3H8/n-C4H8/n-C4H10), BFFOUR-Cu-dpds can simultaneously divide olefins from paraffins in the first column, while high-purity ethylene (> 99.99%) can be directly obtained through the subsequent column using granular porous carbons. Moreover, gas-loaded single-crystal analysis, in-situ infrared spectroscopy measurements, and computational simulations demonstrate the accommodation patterns, interaction bonds, and energy pathways for olefin/paraffin separations.

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Interaction-selective molecular sieving adsorbent for direct separation of ethylene from senary C₂-C₄ olefin/paraffin mixture

Abstract

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CCDC 2162073: Experimental Crystal Structure Determination

CCDC 2162794: Experimental Crystal Structure Determination

CCDC 2162071: Experimental Crystal Structure Determination

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Interaction-selective molecular sieving adsorbent for direct separation of ethylene from senary C2-C4 olefin/paraffin mixture

Abstract

ASJC Scopus subject areas

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CCDC 2162073: Experimental Crystal Structure Determination

CCDC 2162794: Experimental Crystal Structure Determination

CCDC 2162071: Experimental Crystal Structure Determination

Cite this

Interaction-selective molecular sieving adsorbent for direct separation of ethylene from senary C₂-C₄ olefin/paraffin mixture