One-step purification of ethylene from acetylene and carbon dioxide by ultramicroporous carbons

Zhiwei Zhao; Yueyue Liu; Xing Liu; Yuan Liu; Jingwen Chen; Shixia Chen; Shuguang Deng; Jun Wang

doi:10.1002/aic.18046

One-step purification of ethylene from acetylene and carbon dioxide by ultramicroporous carbons

Zhiwei Zhao, Yueyue Liu, Xing Liu, Yuan Liu, Jingwen Chen, Shixia Chen, Shuguang Deng, Jun Wang

Engineering, Ira A. Fulton Schools of (IAFSE)

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

10 Scopus citations

Abstract

The one-step adsorptive separation of high-purity ethylene (C₂H₄) from a ternary gas mixture (C₂H₂/C₂H₄/CO₂) is challenging and has not been reported on porous carbons. Herein, we report camphor seeds husk-derived ultramicroporous carbons (CSHs) show high affinities toward acetylene (C₂H₂) and carbon dioxide (CO₂) over C₂H₄. The optimized CSH-2-700 with high heteroatom contents and centered pore size distributions shows high C₂H₂ adsorption capacity (2.24 mmol g⁻¹) and record ideal adsorbed solution theory (IAST) C₂H₂/C₂H₄ selectivity (10.2) among one-step C₂H₄ purification adsorbents. Meanwhile, CSH carbons are the only carbon adsorbents that preferentially adsorb CO₂ over C₂H₄, with a CO₂/C₂H₄ selectivity of 1.9 under ambient conditions. Furthermore, dynamic breakthrough experiments verified its feasibility for one-step C₂H₄ purification from a three-component C₂H₂/C₂H₄/CO₂ gas-mixture.

Original language	English (US)
Article number	e18046
Journal	AIChE Journal
Volume	69
Issue number	6
DOIs	https://doi.org/10.1002/aic.18046
State	Published - Jun 2023

Keywords

hydroxylamine hydrochloride
narrow pore size distribution
one-step CH purification
ultramicroporous carbons

ASJC Scopus subject areas

Biotechnology
Environmental Engineering
General Chemical Engineering

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10.1002/aic.18046

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@article{119d74e23f124925974e925d800a5238,

title = "One-step purification of ethylene from acetylene and carbon dioxide by ultramicroporous carbons",

abstract = "The one-step adsorptive separation of high-purity ethylene (C2H4) from a ternary gas mixture (C2H2/C2H4/CO2) is challenging and has not been reported on porous carbons. Herein, we report camphor seeds husk-derived ultramicroporous carbons (CSHs) show high affinities toward acetylene (C2H2) and carbon dioxide (CO2) over C2H4. The optimized CSH-2-700 with high heteroatom contents and centered pore size distributions shows high C2H2 adsorption capacity (2.24 mmol g−1) and record ideal adsorbed solution theory (IAST) C2H2/C2H4 selectivity (10.2) among one-step C2H4 purification adsorbents. Meanwhile, CSH carbons are the only carbon adsorbents that preferentially adsorb CO2 over C2H4, with a CO2/C2H4 selectivity of 1.9 under ambient conditions. Furthermore, dynamic breakthrough experiments verified its feasibility for one-step C2H4 purification from a three-component C2H2/C2H4/CO2 gas-mixture.",

keywords = "hydroxylamine hydrochloride, narrow pore size distribution, one-step CH purification, ultramicroporous carbons",

author = "Zhiwei Zhao and Yueyue Liu and Xing Liu and Yuan Liu and Jingwen Chen and Shixia Chen and Shuguang Deng and Jun Wang",

note = "Funding Information: National Natural Science Foundation of China, Grant/Award Numbers: 21908090, 22108243, 22168023 Funding information Funding Information: This study was supported by the National Natural Science Foundation of China (Nos. 21908090, 22108243, and 22168023), and Natural Science Foundation of Jiangxi Province (20224ACB204003). Publisher Copyright: {\textcopyright} 2023 American Institute of Chemical Engineers.",

year = "2023",

month = jun,

doi = "10.1002/aic.18046",

language = "English (US)",

volume = "69",

journal = "AIChE Journal",

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publisher = "American Institute of Chemical Engineers",

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T1 - One-step purification of ethylene from acetylene and carbon dioxide by ultramicroporous carbons

AU - Zhao, Zhiwei

AU - Liu, Yueyue

AU - Liu, Xing

AU - Liu, Yuan

AU - Chen, Jingwen

AU - Chen, Shixia

AU - Deng, Shuguang

AU - Wang, Jun

N1 - Funding Information: National Natural Science Foundation of China, Grant/Award Numbers: 21908090, 22108243, 22168023 Funding information Funding Information: This study was supported by the National Natural Science Foundation of China (Nos. 21908090, 22108243, and 22168023), and Natural Science Foundation of Jiangxi Province (20224ACB204003). Publisher Copyright: © 2023 American Institute of Chemical Engineers.

PY - 2023/6

Y1 - 2023/6

N2 - The one-step adsorptive separation of high-purity ethylene (C2H4) from a ternary gas mixture (C2H2/C2H4/CO2) is challenging and has not been reported on porous carbons. Herein, we report camphor seeds husk-derived ultramicroporous carbons (CSHs) show high affinities toward acetylene (C2H2) and carbon dioxide (CO2) over C2H4. The optimized CSH-2-700 with high heteroatom contents and centered pore size distributions shows high C2H2 adsorption capacity (2.24 mmol g−1) and record ideal adsorbed solution theory (IAST) C2H2/C2H4 selectivity (10.2) among one-step C2H4 purification adsorbents. Meanwhile, CSH carbons are the only carbon adsorbents that preferentially adsorb CO2 over C2H4, with a CO2/C2H4 selectivity of 1.9 under ambient conditions. Furthermore, dynamic breakthrough experiments verified its feasibility for one-step C2H4 purification from a three-component C2H2/C2H4/CO2 gas-mixture.

AB - The one-step adsorptive separation of high-purity ethylene (C2H4) from a ternary gas mixture (C2H2/C2H4/CO2) is challenging and has not been reported on porous carbons. Herein, we report camphor seeds husk-derived ultramicroporous carbons (CSHs) show high affinities toward acetylene (C2H2) and carbon dioxide (CO2) over C2H4. The optimized CSH-2-700 with high heteroatom contents and centered pore size distributions shows high C2H2 adsorption capacity (2.24 mmol g−1) and record ideal adsorbed solution theory (IAST) C2H2/C2H4 selectivity (10.2) among one-step C2H4 purification adsorbents. Meanwhile, CSH carbons are the only carbon adsorbents that preferentially adsorb CO2 over C2H4, with a CO2/C2H4 selectivity of 1.9 under ambient conditions. Furthermore, dynamic breakthrough experiments verified its feasibility for one-step C2H4 purification from a three-component C2H2/C2H4/CO2 gas-mixture.

KW - hydroxylamine hydrochloride

KW - narrow pore size distribution

KW - one-step CH purification

KW - ultramicroporous carbons

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One-step purification of ethylene from acetylene and carbon dioxide by ultramicroporous carbons

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Keywords

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