Efficient separation of butane isomers via ZIF-8 slurry on laboratory- and pilot-scale

Yang, Mingke; Wang, Huishan; Zuo, Julian Y.; Deng, Chun; Liu, Bei; Chai, Liya; Li, Kun; Han, Xiao; Xiao, Peng; Wang, Xiao-Hui; Chen, Wan; Peng, Xiaowan; Han, Yu; Huang, Zixuan; Dong, Baocan; Sun, Chang‐Yu; Chen, Guang-Jin

doi:10.1038/s41467-022-32418-6

Cited by 24 publications

(7 citation statements)

References 61 publications

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“…In addition, Liu et al have conducted extensive studies on the optimization of process flow using current PL systems. 51 For instance, they created a hybrid technique for carbon capture by utilizing a ZIF-8 floating in liquid glycol (Figure 7d). The higher separation performance in type III PLs is due to the formation of semipermeable films when suitably porous ZIF materials are suspended in different HB-forming solvents.…”

Section: Gas Capturementioning

confidence: 99%

“…Toward this end, we have created PLs using PDMS as the sterically hindered solvent for CO 2 selective sorption (Figure c). In addition, Liu et al have conducted extensive studies on the optimization of process flow using current PL systems . For instance, they created a hybrid technique for carbon capture by utilizing a ZIF-8 floating in liquid glycol (Figure d).…”

Section: Porous Liquids Toward Task-specific Applicationsmentioning

confidence: 99%

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Porous Liquids Open New Horizons: Synthesis, Applications, and Prospects

Wang,

Ying,

Xin

et al. 2023

Acc. Mater. Res.

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Conspectus Though the idea of liquids with accessible porosity seems counterintuitive, porous liquids (PLs) have indeed demonstrated themselves to hold great promise in versatile fields, thus arousing great attention and interests from both academic and industrial communities since the concept of PLs was first proposed in 2007. PLs are a novel class of a flowing liquid system that possesses accessible permanent porosity, and they integrate the processable advantages of liquids with superior accommodative capacities of porous solids. By and large, the development of PLs went through the starting stage of the concept proposal and the arrival stage of various synthesized examples to the period of application-specific extensions. From the point of view of producing functions, PLs consist of two parts: sterically hindered solvents and pore generators. Correspondingly, pore generators provide accessible cavities for the resultant PLs, while sterically hindered solvents endow pore generators with a flowing behavior. Undoubtedly, engineering permanent porosity with shape-persistent cavities into a liquid is leading to an inherent change that porosity can not only be created in conventional solids, thus providing new opportunities by utilizing the processability of PLs. Therefore, the field of PLs has seen considerable progress in the design, synthesis, and emerging applications since the example of hollow silica based PLs was demonstrated by Dai et al. in 2015 (Porous Liquids: A Promising Class of Media for Gas Separation.Angew. Chem., Int. Ed. Engl.201554932936), especially during the past four years. Until now, PLs have emerged as promising platforms for a variety of applications, including but not limited to gas capture, molecule separation, catalytic conversion, biomedicine, and beyond. Anyhow, the further development toward practical applications of PLs depends heavily on the universal synthesis method and the process optimization, where the former is undoubtedly the core. This Account mainly showcases the evolution of our recent progress in the design and synthesis of PLs. Importantly, we tell the story of how we apply the synthesis idea of another similar liquidlike material (i.e., solvent-free nanofluids, SFNs) that has been investigated for more than 20 years in our laboratory in the preparation of PLs. Emphasis is put on the construction of PLs from the perspective of interface interactions (e.g., the electrostatic interaction, the acid–base interaction, and the dipole–dipole/quadrupole interaction, etc.) between sterically hindered solvents and pore generators. Then, we present and summarize related applications in the field of environmental remediation including gas sorption, membrane separation, metal ion selective sorption, and extractive desulfurization, etc. Finally, the challenges, opportunities, and future directions in developing novel PLs are provided and outlined. It is expected that this Account will stimulate the interest of researchers working in broadly diverse fields to fully unleash the potent...

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Section: Gas Capturementioning

confidence: 99%

Section: Porous Liquids Toward Task-specific Applicationsmentioning

confidence: 99%

Porous Liquids Open New Horizons: Synthesis, Applications, and Prospects

Wang,

Ying,

Xin

et al. 2023

Acc. Mater. Res.

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“…With the advent of membrane-based separation technology, bulk microporous materials such as zeolites of crystalline aluminosilicates and activated carbon have been considered as promising alternatives. − To date, zeolitic imidazolate framework (ZIF) membranes have presented advantages in separating CO 2 /H 2 , − ethanol/water, − p / o -xylene, , and n -butane/isobutane. , In addition, metal–organic frameworks (MOFs) with uniform pore distribution are a class of molecular sieve materials, whose diverse applications have also been reported. − Wang et al investigated the separation performance of a series of Zr-based MOFs and concluded that Zr 6 O 4 (OH) 4 (bptc) 3 could adsorb n -hexane but exclude branched isomers in a C 6 alkenes mixture . Li et al found that due to multiple adsorption sites, MOF-303(Al) could separate CO 2 from CO 2 /CH 4 and CO 2 /N 2 mixtures with high CO 2 capacity .…”

Section: Introductionmentioning

confidence: 99%

First-Principles Investigation of Two-Dimensional CuPP-Grid Molecular Sieves for C₄ Hydrocarbon Purification by a Double-Bond Effect

Wang,

He,

Tang

et al. 2023

ACS Appl. Nano Mater.

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Separation and purification of C 4 hydrocarbons are critical processes in the petrochemical industry. The purification performance of a 2D CuPP-Grid molecular sieve membrane is systematically explored by first-principles calculations. A "double-bond effect" will reduce the penetration diameter of molecules, the transferred electrons, and the charge density overlaps between molecules and the molecular sieve, thus making a C 4 H 6 molecule with two carbon−carbon double bonds pass through a pore without a diffusion barrier. An i-C 4 H 10 molecule without a double bond has the highest diffusion barrier of 0.52 eV. Interestingly, the passing i-C 4 H 10 molecule will cause the reversal of the magnetic property of the CuPP-Grid membrane, which can be applied for detection. Remarkably, under 150−400 K, the C 4 H 6 /n-C 4 H 8 , C 4 H 6 /i-C 4 H 8 , and C 4 H 6 /i-C 4 H 10 selectivities of the CuPP-Grid membrane are in the relatively high range of 10 2 −10 26 with superior permeance. Our research theoretically verifies the feasibility of designing a kind of 2D nanomolecular sieve material for the efficient purification of 1,3-butadiene in the petrochemical industry.

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“…Among solid sorbents used for Type 3 PLs, MOFs offer a unique opportunity to study the structure–property relationship between adsorption and porosity due to the ease of tunability of the porous frameworks. − For example, MOFs can be judicially designed to tune the desired properties such as pore size, ligand functionality, and metal center. , Additionally, the surface of MOFs can be readily functionalized, allowing improved dispersion within liquids. − ZIF–8 is a MOF from the zeolitic imidazole framework (ZIF) family that has recently shown promise for use in Type 3 PLs. − This is due to the high hydrophobicity of the framework, which excludes water from the pores except under high hydrostatic pressures . As a result, ZIF–8 and related surface-functionalized versions have been shown to improve the uptake of gases, including CO 2 and O 2 , in both water and water–organic solvent mixtures. ,− However, aqueous ZIF-based PLs are not without other challenges. The formation of carbonates from the reaction of CO 2 with the solvent system can lead to framework degradation over time …”

Section: Introductionmentioning

confidence: 99%

Design Principles Guiding Solvent Size Selection in ZIF-Based Type 3 Porous Liquids for Permanent Porosity

Hurlock,

Christian,

Rimsza

et al. 2023

ACS Mater. Au

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Porous liquids (PLs), which are solvent-based systems that contain permanent porosity due to the incorporation of a solid porous host, are of significant interest for the capture of greenhouse gases, including CO 2 . Type 3 PLs formed by using metal−organic frameworks (MOFs) as the nanoporous host provide a high degree of chemical turnability for gas capture. However, pore aperture fluctuation, such as gate-opening in zeolitic imidazole framework (ZIF) MOFs, complicates the ability to keep the MOF pores available for gas adsorption. Therefore, an understanding of the solvent molecular size required to ensure exclusion from MOFs in ZIF-based Type 3 PLs is needed. Through a combined computational and experimental approach, the solvent-pore accessibility of exemplar MOF ZIF−8 was examined. Density functional theory (DFT) calculations identified that the lowest-energy solvent− ZIF interaction occurred at the pore aperture. Experimental density measurements of ZIF−8 dispersed in various-sized solvents showed that ZIF−8 adsorbed solvent molecules up to 2 Å larger than the crystallographic pore aperture. Density analysis of ZIF dispersions was further applied to a series of possible ZIF-based PLs, including ZIF−67, −69, −71(RHO), and −71(SOD), to examine the structure−property relationships governing solvent exclusion, which identified eight new ZIF-based Type 3 PL compositions. Solvent exclusion was driven by pore aperture expansion across all ZIFs, and the degree of expansion, as well as water exclusion, was influenced by ligand functionalization. Using these results, a design principle was formulated to guide the formation of future ZIF-based Type 3 PLs that ensures solvent-free pores and availability for gas adsorption.

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Efficient separation of butane isomers via ZIF-8 slurry on laboratory- and pilot-scale

Cited by 24 publications

References 61 publications

Porous Liquids Open New Horizons: Synthesis, Applications, and Prospects

Porous Liquids Open New Horizons: Synthesis, Applications, and Prospects

First-Principles Investigation of Two-Dimensional CuPP-Grid Molecular Sieves for C₄ Hydrocarbon Purification by a Double-Bond Effect

Design Principles Guiding Solvent Size Selection in ZIF-Based Type 3 Porous Liquids for Permanent Porosity

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Efficient separation of butane isomers via ZIF-8 slurry on laboratory- and pilot-scale

Cited by 24 publications

References 61 publications

Porous Liquids Open New Horizons: Synthesis, Applications, and Prospects

Porous Liquids Open New Horizons: Synthesis, Applications, and Prospects

First-Principles Investigation of Two-Dimensional CuPP-Grid Molecular Sieves for C4 Hydrocarbon Purification by a Double-Bond Effect

Design Principles Guiding Solvent Size Selection in ZIF-Based Type 3 Porous Liquids for Permanent Porosity

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First-Principles Investigation of Two-Dimensional CuPP-Grid Molecular Sieves for C₄ Hydrocarbon Purification by a Double-Bond Effect