Single-step ethylene purification from ternary C2 hydrocarbon mixtures in a scalable metal–organic framework

Kim, Dong-Hyun; Truong, Bao Nguyen; Jo, Donghui; Yoon, Ji Woong; Lee, Su‐Kyung; Bae, Youn‐Sang; Cho, Kyung Ho; Lee, U‐Hwang

doi:10.1016/j.cej.2023.143858

Cited by 12 publications

(1 citation statement)

References 38 publications

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“…, plastics) and other valued products in modern life. – Currently, C 2 H 4 is mainly produced by thermal cracking of ethane (C 2 H 6 ) or naphtha, with the inevitable presence of acetylene (C 2 H 2 ) and C 2 H 6 byproducts. Thus, separating C 2 H 2 and C 2 H 6 from these mixtures is an industrial necessity to obtain polymer-grade C 2 H 4 (>99.9% purity) but remains a significant challenge because of their very similar physical properties, including boiling points, quadrupole moment, and kinetic diameter. – Recently, as an alternative separation technology, the utilization of porous materials as sorbents for C 2 H 4 purification has attracted widespread interest due to their high efficiency and environmental friendliness. – In this regard, porous crystalline adsorbents such as metal–organic frameworks (MOFs) – and hydrogen-bonded organic frameworks (HOFs) – have been developed for C 2 -gases mixture separation, and significant progress has been achieved in addressing the efficient separation of C 2 H 4 from binary C 2 H 2 /C 2 H 4 and C 2 H 6 /C 2 H 4 mixtures due to their well-defined structure, controllable pore size, and modifiable pore environment. Because of the difficulty in designing and synthesizing materials that preferentially trap C 2 H 2 and C 2 H 6 , the simultaneous removal of both C 2 H 2 and C 2 H 6 from ternary C 2 H 2 /C 2 H 6 /C 2 H 4 mixtures in a one-step process is still underexplored.…”

Section: Introductionmentioning

confidence: 99%

Kilogram-Scale Fabrication of a Robust Olefin-Linked Covalent Organic Framework for Separating Ethylene from a Ternary C₂ Hydrocarbon Mixture

Wang,

Zhang,

Lin

et al. 2023

J. Am. Chem. Soc.

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One-step adsorptive purification of ethylene (C2H4) from a ternary mixture of acetylene (C2H2), C2H4, and ethane (C2H6) by a single material is of great importance but challenging in the petrochemical industry. Herein, a chemically robust olefin-linked covalent organic framework (COF), NKCOF-62, is designed and synthesized by a melt polymerization method employing tetramethylpyrazine and terephthalaldehyde as cheap monomers. This method avoids most of the disadvantages of classical solvothermal methods, which enable the cost-effective kilogram fabrication of olefin-linked COFs in one pot. Furthermore, NKCOF-62 shows remarkably selective adsorption of C2H2 and C2H6 over C2H4 thanks to its unique pore environments and suitable pore size. Breakthrough experiments demonstrate that polymer-grade C2H4 can be directly obtained from C2H2/C2H6/C2H4 (1/1/1) ternary mixtures through a single separation process. Notably, NKCOF-62 is the first demonstration of the potential to use COFs for C2H2/C2H6/C2H4 separation, which provides a blueprint for the design and construction of robust COFs for industrial gas separations.

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Section: Introductionmentioning

confidence: 99%

Kilogram-Scale Fabrication of a Robust Olefin-Linked Covalent Organic Framework for Separating Ethylene from a Ternary C₂ Hydrocarbon Mixture

Wang,

Zhang,

Lin

et al. 2023

J. Am. Chem. Soc.

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The Reinforced Separation of Intractable Gas Mixtures by Using Porous Adsorbents

Ke,

Xiong,

Fang

et al. 2024

Advanced Materials

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This review focuses on the mechanism and driving force in the intractable gas separation using porous adsorbents. A variety of intractable mixtures have been discussed, including air separation, carbon capture, and hydrocarbon purification. Moreover, the separation systems are categorized according to distinctly biased modes depending on the minor differences in the kinetic diameter, dipole/quadruple moment, and polarizability of the adsorbates, or sorted by the varied separation occasions (e.g., CO2 capture from flue gas or air) and driving forces (thermodynamic and kinetic separation, molecular sieving). Each section highlights the functionalization strategies for porous materials, like synthesis condition optimization and organic group modifications for porous carbon materials, cation exchange and heteroatom doping for zeolites, and metal node‐organic ligand adjustments for MOFs. These functionalization strategies are subsequently associated with enhanced adsorption performances (capacity, selectivity, structural/thermal stability, moisture resistance, etc.) toward the analog gas mixtures. Finally, this review also discusses future challenges and prospects for using porous materials in intractable gas separation. Therein, the combination of theoretical calculation with the synthesis condition and adsorption parameters optimization of porous adsorbents may have great potential, given its fast targeting of candidate adsorbents and deeper insights into the adsorption forces in the confined pores and cages.

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Advancing Pore‐Space‐Partitioned Metal–Organic Frameworks with Isoreticular Cluster Concept

Xiao,

Chen,

Wang

et al. 2024

Angewandte Chemie

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Trigonal planar M3(O/OH) trimers are among the most important clusters in inorganic chemistry and are the foundational features of multiple high‐impact MOF platforms. Here we introduce a concept called isoreticular cluster series and demonstrate that M3(O/OH), as the first member of a supertrimer series, can be combined with a higher hierarchical member (double‐deck trimer here) to advance isoreticular chemistry. We report here an isoreticular series of pore‐space‐partitioned MOFs called M3M6pacs made from co‐assembly between M3 single‐deck trimer and M3x2 double‐deck trimer. Important factors were identified on this multi‐modular MOF platform to guide optimization of each module, which enables the phase selection of M3M6pacs by overcoming the formation of previously‐always‐observed same‐cluster phases. The new pacs materials exhibit high surface area and high uptake capacity for CO2 and small hydrocarbons, as well as selective adsorption properties relevant to separation of industrially important mixtures such as C2H2/CO2 and C2H2/C2H4. Furthermore, new M3M6pacs materials show electrocatalytic properties with high activity.

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Single-step ethylene purification from ternary C2 hydrocarbon mixtures in a scalable metal–organic framework

Cited by 12 publications

References 38 publications

Kilogram-Scale Fabrication of a Robust Olefin-Linked Covalent Organic Framework for Separating Ethylene from a Ternary C₂ Hydrocarbon Mixture

Kilogram-Scale Fabrication of a Robust Olefin-Linked Covalent Organic Framework for Separating Ethylene from a Ternary C₂ Hydrocarbon Mixture

The Reinforced Separation of Intractable Gas Mixtures by Using Porous Adsorbents

Advancing Pore‐Space‐Partitioned Metal–Organic Frameworks with Isoreticular Cluster Concept

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Single-step ethylene purification from ternary C2 hydrocarbon mixtures in a scalable metal–organic framework

Cited by 12 publications

References 38 publications

Kilogram-Scale Fabrication of a Robust Olefin-Linked Covalent Organic Framework for Separating Ethylene from a Ternary C2 Hydrocarbon Mixture

Kilogram-Scale Fabrication of a Robust Olefin-Linked Covalent Organic Framework for Separating Ethylene from a Ternary C2 Hydrocarbon Mixture

The Reinforced Separation of Intractable Gas Mixtures by Using Porous Adsorbents

Advancing Pore‐Space‐Partitioned Metal–Organic Frameworks with Isoreticular Cluster Concept

Contact Info

Product

Resources

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Kilogram-Scale Fabrication of a Robust Olefin-Linked Covalent Organic Framework for Separating Ethylene from a Ternary C₂ Hydrocarbon Mixture

Kilogram-Scale Fabrication of a Robust Olefin-Linked Covalent Organic Framework for Separating Ethylene from a Ternary C₂ Hydrocarbon Mixture