Acid-triggered polyether sulfone - Polyvinyl pyrrolidone blend anion exchange membranes for the recovery of titania waste acid via diffusion dialysis

Zhang, Haoyang; Song, Guanlin; Luo, T.; Yang, Xiushan; Ren, Haisheng; Wang, Xinlong; Zhang, Zhiye

doi:10.1016/j.memsci.2022.120980

Cited by 7 publications

(3 citation statements)

References 46 publications

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“…Moreover, ether linkages can refine the flexibility of AEMs, better accommodating the requirements of membrane electrode assembly (MEA) processes. Currently, the common polymer main chains containing ether-bond include poly(ether sulfone)s, − polyetherketones, − polyphenylether, − etc. For instance, Li et al prepared a series of imidazole-type AEMs with different rigid side chains based on polyether sulfone main chain .…”

Section: Introductionmentioning

confidence: 99%

Construction of Cross-Linked Poly(aryl Ether Nitrile) Anion Exchange Membranes Containing Bilateral Linked Branches for Water Electrolyzer

Zhu,

Zhan,

Tang

et al. 2024

ACS Appl. Polym. Mater.

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The anion exchange membranes (AEMs) serving as the core component play critical roles in the water electrolyzer, but the trade-off between ion conductivity and dimensional stability of AEMs remains a huge obstacle. Herein, a series of double-chain dendritic cross-linked poly(aryl ether nitrile) AEMs were prepared through the introduction of 1-allyl-3-methylimidazole chloride salt and 1-vinylimidazole. The rational molecular structure design, unique nitrile groups on the backbone, and direct grafting of hydrophobic side chains contributed to the dimensional stability, regulation of the functional cation content, and ion transport channels of the membranes. It was found that the CS-G-PAENA-X AEMs exhibited the anticipated characteristics of a high ion exchange capacity (2.46−3.01 mmol/g) and superior hydroxide conductivity (61.51−129.87 mS/cm at 80 °C). The water uptake and swelling ratio of the CS-G-PAENA-X AEMs were in the ranges 16.67−37.22 and 1.95−4.59%, respectively. In water electrolysis test, the AEM achieved a peak current density of 492.63 mA/cm 2 in 1 M KOH solution. This work provides an alternative approach to prepare high performance AEMs and shows potential application in a water electrolyzer.

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Section: Introductionmentioning

confidence: 99%

Construction of Cross-Linked Poly(aryl Ether Nitrile) Anion Exchange Membranes Containing Bilateral Linked Branches for Water Electrolyzer

Zhu,

Zhan,

Tang

et al. 2024

ACS Appl. Polym. Mater.

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“…According to its charge, the ion exchange membrane is classified as an anion exchange membrane (AEM) or cation exchange membrane (CEM). , Herein, the research focused on AEMs for acid recovery by DD. The AEM consists mainly of a polymer backbone and ion exchange functional groups. , The polymer backbone of the AEM can be divided into two categories: hydrophobic and hydrophilic. , Hydrophobic polymers mainly include poly(arylene ether sulfone)s (PAESs), poly(vinylidene fluoride) (PVDF), poly(2,6-dimethyl-1,4-phenylene oxide) (PPO), − poly epichlorohydrin (PECH), poly(ether ether ketone) (PEEK), and polysufone (PSF) …”

Section: Introductionmentioning

confidence: 99%

“…10 According to its charge, the ion exchange membrane is classified as an anion exchange membrane (AEM) or cation exchange membrane (CEM). 11,12 Herein, the research focused on AEMs for acid recovery by DD. The AEM consists mainly of a polymer backbone and ion exchange functional groups.…”

Section: Introductionmentioning

confidence: 99%

Semi-interpenetrating Polymer-Network Anion Exchange Membrane Based on Quaternized Polyepichlorohydrin and Polyvinyl Alcohol for Acid Recovery by Diffusion Dialysis

Gong

Chen

Shen

et al. 2023

Ind. Eng. Chem. Res.

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In this paper, polyepichlorohydrin (PECH) quaternized with Nmethylimidazole (ImPECH) was successfully synthesized. ImPECH, polyvinyl alcohol, and tetraethyl orthosilicate were used to prepare anion exchange membranes that possessed a semi-interpenetrating polymer-network structure. These membranes were designed for acid recovery by diffusion dialysis (DD). The successful synthesis of ImPECH was verified via Fourier transform infrared spectroscopy (FTIR) and 1 H NMR spectroscopy. Meanwhile, the prepared anion exchange membranes were characterized by FTIR, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). In addition, the ion exchange capacity (IEC), water uptake (W R ), tensile strength (TS), linear expansion rate (LER), and elongation at break (E b ) of each membrane were characterized. In DD application tests, acid dialysis coefficients (U H + ) of the membranes ranged from 8.56 × 10 −3 m/h to 27.33 × 10 −3 m/h and separation factor (S) values were all above 22.55. These results showed that anion exchange membranes had higher U H + and S values than commercial membrane DF-120 (U H + is 9.00 × 10 −3 m/h and S is 18.00) and other better general properties including the LER, TGA, TS, and so on. The prepared membranes showed a wide application prospective for acid recovery via DD.

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Neutralization of titania waste acid with iron oxides

Hu,

Li,

Luo

et al. 2024

Chemical Engineering and Processing - Process Intensification

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Acid-triggered polyether sulfone - Polyvinyl pyrrolidone blend anion exchange membranes for the recovery of titania waste acid via diffusion dialysis

Cited by 7 publications

References 46 publications

Construction of Cross-Linked Poly(aryl Ether Nitrile) Anion Exchange Membranes Containing Bilateral Linked Branches for Water Electrolyzer

Construction of Cross-Linked Poly(aryl Ether Nitrile) Anion Exchange Membranes Containing Bilateral Linked Branches for Water Electrolyzer

Semi-interpenetrating Polymer-Network Anion Exchange Membrane Based on Quaternized Polyepichlorohydrin and Polyvinyl Alcohol for Acid Recovery by Diffusion Dialysis

Neutralization of titania waste acid with iron oxides

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