Microporous ZIF-7 membranes prepared by in-situ growth method for hydrogen separation

Go, Youngchae; Lee, Jeong-Hee; Shamsudin, Ili Khairunnisa; Kim, Jin-Soo; Othman, Mohd Roslee

doi:10.1016/j.ijhydene.2015.09.060

Cited by 29 publications

(6 citation statements)

References 44 publications

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“…15 Recently synthesized UTSA-220 MOF nanoparticles exhibit a high C 2 H 2 uptake capacity, which is very interesting in terms of acetylene separation from light hydrocarbons in downstream industrial applications. 16 Go et al 17 revealed that in situ grown ZIF-7 membranes show higher selectivity (∼16) for H 2 /CO 2 than ZIF-7 membranes prepared by other methods.…”

Section: ■ Introductionmentioning

confidence: 99%

Gas Transport Properties of the Metal–Organic Framework (MOF)-Assisted Polymer of Intrinsic Microporosity (PIM-1) Thin-Film Composite Membranes

Aliyev

Warfsmann

Tokay

et al. 2020

ACS Sustainable Chem. Eng.

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The current study summarizes the findings of the single gas transport performances of the mixed matrix thin-film composite membranes (TFCM) consisting of metal-organic frameworks (MOFs) incorporated into the polymer of intrinsic microporosity (PIM-1). The Mg-MOF-74, MIL-53, TIFSIX-3, and Zn 2 (bim) 4 were investigated as stand-alone materials and as incorporated into the PIM-1 polymer matrix serving as a selective layer of thin-film composite membranes by various methods: Fourier-transform infrared spectroscopy (FTIR), solid-state NMR (SSNMR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM).The effect of MOF-loading and nature on mixed-matrix membrane (MMM) morphology and operation were analyzed by varying the MOF content in the polymer matrix from 2 to 10 wt.% with respect to dry polymer weight. The results show that the incorporation of MOFs into the PIM-1 polymer matrix boosts the permeance and selectivity of H 2 and O 2 over N 2 , and the prepared PIM-1/TIFSIX_4 mixed matrix membrane shows better separation performance for CO 2 /CH 4 than that of pure PIM-1. Such membranes can be good candidates for ammonia purge gas, oxygen enrichment, and acid gas treatment applications.

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Section: ■ Introductionmentioning

confidence: 99%

Gas Transport Properties of the Metal–Organic Framework (MOF)-Assisted Polymer of Intrinsic Microporosity (PIM-1) Thin-Film Composite Membranes

Aliyev

Warfsmann

Tokay

et al. 2020

ACS Sustainable Chem. Eng.

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“…Among other used modulators, sodium formate can be distinguished [55,56]. It also promotes the formation of the ZIF-7 layer on the various supports, for example, aluminum oxide [57,58].…”

Section: Introductionmentioning

confidence: 99%

“…ZIF-7 contains small pores with hexagonal windows of about 0.3 nm, which is optimal for the separation of hydrogen (0.29 nm) from carbon dioxide (0.33 nm) or nitrogen (0.36 nm) [64]. This material was successfully applied for the separation of hydrogen, and it showed high selectivity [58,64,65]. However, the flexibility of the ZIF-7 structure could lead to phase transitions and a "gate-opening" effect, affecting separation properties.…”

Section: Introductionmentioning

confidence: 99%

MW Synthesis of ZIF-7. The Effect of Solvent on Particle Size and Hydrogen Sorption Properties

et al. 2020

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We report here fast (15 min) microwave-assisted solvothermal synthesis of zeolitic imidazolate framework material (ZIF-7). We have optimized solvent composition to achieve high porosity and hydrogen capacity and narrow particle size distribution. It was shown that synthesis in N,N-diethylformamide (DEF) results in a layered ZIF-7 III phase, while N,N-dimethylformamide (DMF) as solvent leads to a pure ZIF-7 phase in microwave conditions. A mixture of toluene with DMF allows the production of pure ZIF-7 material only with the triethylamine additive. Obtained materials were comprehensively characterized. We have pointed out that both X-ray diffraction and infrared spectroscopy could be used for the identification of ZIF-7 or ZIF-7 III phases. Although samples obtained in DMF, and in a mixture of DMF, toluene, and triethylamine were assigned to the pure ZIF-7 phase, solvent composition significantly affected the size of particles in the material and nitrogen and hydrogen adsorption process.

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“…Zeolitic imidazolate frameworks (ZIFs) are a group of MOFs. ZIFs with various structures have been used in many applications, especially crude oil spills due to hierarchical porous structures, facile synthesis, durability, and good recyclability (Seoane et al, 2011;Go et al, 2016;Wu et al, 2017a;Zhong et al, 2018). Based on predictive models, ZIFs absorption capacity is in the order of 6,600 mg/g (Lin et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

A review on zeolitic imidazolate frameworks use for crude oil spills cleanup

Shahmirzaee

Hemmati-Sarapardeh

Husein

et al. 2019

Adv. Geo-Energ. Res.

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Oil spills are a global concern by virtue of their distractive effects on the ecosystem. Many studies have examined the use of porous materials as sorbents for contaminants from different polluted waters. For example, hydrophobic metal organic frameworks, especially zeolitic imidazolate frameworks (ZIFs) with high porosity, have attracted lots of attention. ZIFs are a subclass of metal organic frameworks and display an excellent performance toward oil/water separation compared with other porous materials. Nevertheless, the performance of ZIFs toward oil spills cleanup has not been reviewed. Accordingly, this article overviews the different methods for ZIF preparation, their corresponding structure, and their various applications as sorbents and in particular, recent developments in cleaning up oil spills with meso and micro-porous ZIFs. The investigation of the literatures revealed that the effective parameters on the performance of porous ZIFs are specific surface area, pore diameters of ZIF, and the size of cavities due to interconnecting of ZIF particles. The ZIF-8 with a high surface area of 1408 m 2 /g and 1384.2 m 2 /g and adsorption capacity up to 3000 mg/g was studied more than the other ZIF structures. Models predications revealed the maximum adsorption capacity of 6633 mg/g for ZIF-8. Recently, investigations focused on carbonitride foam and melamine sponge as templates of ZIF powder. In comparison with synthesis methods, dip coating as a facial synthesis method was introduced for production and anchoring ZIF particles on the substrate. The recyclability of crude oil and the reusability of the ZIF sorbents are highlighted. Moreover, this article reviews recent developments of ZIFs synthesis, current challenges, and prospects for the use of ZIFs in oil/water separation. The findings of this study can help to better understand widespread applications of ZIFs, effective features of a sorbent, and methods to improve adsorption capacity. As cleaning up oil spills is known as an important issue, this is the first study on ZIFs in particular oil/water separation which provides a summary of researches in a simple form along with recent developments compared to published reviews.

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Microporous ZIF-7 membranes prepared by in-situ growth method for hydrogen separation

Cited by 29 publications

References 44 publications

Gas Transport Properties of the Metal–Organic Framework (MOF)-Assisted Polymer of Intrinsic Microporosity (PIM-1) Thin-Film Composite Membranes

Gas Transport Properties of the Metal–Organic Framework (MOF)-Assisted Polymer of Intrinsic Microporosity (PIM-1) Thin-Film Composite Membranes

MW Synthesis of ZIF-7. The Effect of Solvent on Particle Size and Hydrogen Sorption Properties

A review on zeolitic imidazolate frameworks use for crude oil spills cleanup

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