High p-xylene selectivity in aluminum-based metal–organic framework with 1-D channels

Hyun Jin Bae; Seung Ik Kim; Yujin Choi; Kyung Min Kim; Youn Sang Bae

doi:10.1016/j.jiec.2022.10.021

High p-xylene selectivity in aluminum-based metal–organic framework with 1-D channels

Hyun Jin Bae, Seung Ik Kim, Yujin Choi, Kyung Min Kim, Youn Sang Bae

Department of Chemical and Biomolecular Engineering

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

Abstract

The separation of highly pure p-xylene (pX) from xylene isomers is an industrially important and challenging issue. Although simulated moving bed (SMB) processes using faujasite zeolites are currently used for pX separation, developing novel adsorbents with improved pX separation performances is strongly needed. In this study, an aluminum-based metal–organic framework (MOF), MIL-120(Al) with 1-D channels of approximately 7 Å, exhibited considerably high pX selectivities compared to xylene isomers (α_p_X/_o_X: ∼31; α_p_X/_m_X: ∼17; α_p_X/EB: ∼7.5; α_p_X/OME: ∼11), which are superior to reported values for other MOFs and zeolites under similar conditions. Such high selectivities may originate from the proper pore shape and size of MIL-120(Al). MIL-120(Al) also showed good cyclic adsorption properties as well as superior hydrothermal and chemical stabilities. Finally, a dynamic simulation showed that MIL-120(Al) could achieve approximately complete separation of pX from a xylene isomer mixture using an SMB process.

Original language	English
Pages (from-to)	333-341
Number of pages	9
Journal	Journal of Industrial and Engineering Chemistry
Volume	117
DOIs	https://doi.org/10.1016/j.jiec.2022.10.021
Publication status	Published - 2023 Jan 25

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2020R1A5A1019131 , 2022R1A2B5B02002577 ).

Publisher Copyright:
© 2022 The Korean Society of Industrial and Engineering Chemistry

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)

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10.1016/j.jiec.2022.10.021

Cite this

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title = "High p-xylene selectivity in aluminum-based metal–organic framework with 1-D channels",

abstract = "The separation of highly pure p-xylene (pX) from xylene isomers is an industrially important and challenging issue. Although simulated moving bed (SMB) processes using faujasite zeolites are currently used for pX separation, developing novel adsorbents with improved pX separation performances is strongly needed. In this study, an aluminum-based metal–organic framework (MOF), MIL-120(Al) with 1-D channels of approximately 7 {\AA}, exhibited considerably high pX selectivities compared to xylene isomers (αpX/oX: ∼31; αpX/mX: ∼17; αpX/EB: ∼7.5; αpX/OME: ∼11), which are superior to reported values for other MOFs and zeolites under similar conditions. Such high selectivities may originate from the proper pore shape and size of MIL-120(Al). MIL-120(Al) also showed good cyclic adsorption properties as well as superior hydrothermal and chemical stabilities. Finally, a dynamic simulation showed that MIL-120(Al) could achieve approximately complete separation of pX from a xylene isomer mixture using an SMB process.",

author = "Bae, {Hyun Jin} and Kim, {Seung Ik} and Yujin Choi and Kim, {Kyung Min} and Bae, {Youn Sang}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2020R1A5A1019131 , 2022R1A2B5B02002577 ). Publisher Copyright: {\textcopyright} 2022 The Korean Society of Industrial and Engineering Chemistry",

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doi = "10.1016/j.jiec.2022.10.021",

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T1 - High p-xylene selectivity in aluminum-based metal–organic framework with 1-D channels

AU - Bae, Hyun Jin

AU - Kim, Seung Ik

AU - Choi, Yujin

AU - Kim, Kyung Min

AU - Bae, Youn Sang

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2020R1A5A1019131 , 2022R1A2B5B02002577 ). Publisher Copyright: © 2022 The Korean Society of Industrial and Engineering Chemistry

PY - 2023/1/25

Y1 - 2023/1/25

N2 - The separation of highly pure p-xylene (pX) from xylene isomers is an industrially important and challenging issue. Although simulated moving bed (SMB) processes using faujasite zeolites are currently used for pX separation, developing novel adsorbents with improved pX separation performances is strongly needed. In this study, an aluminum-based metal–organic framework (MOF), MIL-120(Al) with 1-D channels of approximately 7 Å, exhibited considerably high pX selectivities compared to xylene isomers (αpX/oX: ∼31; αpX/mX: ∼17; αpX/EB: ∼7.5; αpX/OME: ∼11), which are superior to reported values for other MOFs and zeolites under similar conditions. Such high selectivities may originate from the proper pore shape and size of MIL-120(Al). MIL-120(Al) also showed good cyclic adsorption properties as well as superior hydrothermal and chemical stabilities. Finally, a dynamic simulation showed that MIL-120(Al) could achieve approximately complete separation of pX from a xylene isomer mixture using an SMB process.

AB - The separation of highly pure p-xylene (pX) from xylene isomers is an industrially important and challenging issue. Although simulated moving bed (SMB) processes using faujasite zeolites are currently used for pX separation, developing novel adsorbents with improved pX separation performances is strongly needed. In this study, an aluminum-based metal–organic framework (MOF), MIL-120(Al) with 1-D channels of approximately 7 Å, exhibited considerably high pX selectivities compared to xylene isomers (αpX/oX: ∼31; αpX/mX: ∼17; αpX/EB: ∼7.5; αpX/OME: ∼11), which are superior to reported values for other MOFs and zeolites under similar conditions. Such high selectivities may originate from the proper pore shape and size of MIL-120(Al). MIL-120(Al) also showed good cyclic adsorption properties as well as superior hydrothermal and chemical stabilities. Finally, a dynamic simulation showed that MIL-120(Al) could achieve approximately complete separation of pX from a xylene isomer mixture using an SMB process.

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High p-xylene selectivity in aluminum-based metal–organic framework with 1-D channels

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