Bipolar membrane electrodialysis in an organic medium: Production of methyl methoxyacetate

Li, Qiuhua; Huang, Chuanhui; Xu, Tongwen

doi:10.1016/j.memsci.2009.04.026

Cited by 19 publications

(8 citation statements)

References 10 publications

(7 reference statements)

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“…First, water splitting occurs in the interface region of bipolar membrane after the electrolyte is exhausted, and this would increase the membrane resistance. Second, there is much H 2 and O 2 generated in the electrode compartments, which decreases the apparent conductivity of the electrode rinsing solution. , Third, the initial solution concentration in acid compartment is low to increase the electric resistance. From the right part of Figure a, it can be seen that as the molar feed ratio increases from 2.01 to 4.08, and the final H 2 SO 4 concentration decreases from 0.27 to 0.24 mol/L.…”

Section: Resultsmentioning

confidence: 99%

Batch Preparation of High Basicity Polyferric Sulfate by Hydroxide Substitution from Bipolar Membrane Electrodialysis

Zhang

Wang

Chen

et al. 2017

ACS Sustainable Chem. Eng.

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An experimental study was carried out on the batch preparation of high basicity polyferric sulfate (PFS) by hydroxide substitution from bipolar membrane electrodialysis (BMED) with BP-A configuration. Effects of operation time, current density, and molar feed ratio of FeSO 4 to H 2 SO 4 on PFS properties were investigated. Results show that increasing operation time and molar feed ratio may increase the PFS basicity, turbidity removal ratio, and energy consumption simultaneously; meanwhile, increasing current density could increase the basicity and turbidity removal ratio but decrease the energy consumption. When the current density is 20 mA/cm 2 , the basicity attains to 14.72%, turbidity removal ratio increases to 93.43%, and energy consumption decreases to 2.72 kW•h/(kg H 2 SO 4 ). Moreover, X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FT-IR) were conducted to determine the structure and morphology analysis of solid PFS.

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Section: Resultsmentioning

confidence: 99%

Batch Preparation of High Basicity Polyferric Sulfate by Hydroxide Substitution from Bipolar Membrane Electrodialysis

Zhang

Wang

Chen

et al. 2017

ACS Sustainable Chem. Eng.

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“…18 Both factors have a positive effect on the NR 4 OH concentration and on the operating time. Figure 3(c) shows the effect of current density on the energy consumption and the current efficiency.…”

Section: Effect Of the Current Density On The Process Performancementioning

confidence: 99%

Synthesis of quaternary ammonium hydroxide from its halide salt by bipolar membrane electrodialysis (BMED): effect of molecular structure of ammonium compounds on the process performance

Shen

Liu

et al. 2014

J of Chemical Tech & Biotech

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BACKGROUND: Conventional methods for synthesis of quaternary ammonium hydroxides, such as the reaction of quaternary ammonium chloride, ion-exchange and electro-electrodialysis cannot achieve benign production of QAOH without secondary pollution. The objective of the present study was to develop bipolar membrane electrodialysis with a novel stack configuration as an improved method to prepare high purity quaternary ammonium hydroxide from its halide salt.

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“…Water-based glycidol production via the dehydrohalogenation of 3-chloro-1,2-propanediol in base has been conducted with high product yield (80%) and current efficiency (75%), facilitated by the alkaline environment offered by the AEL side of the BPM under operation . BPMED was also used to synthesize methyl methoxyacetate in methanol. , Here, methoxide is generated at the BPM interface, analogous to hydroxide formation from water in WD, with the methoxide ion reacting with the precursor, methyl chloroacetate . Though the membrane voltages for this process are significantly larger than analogous water-based systems (single cell voltages of 5–10 V compared to 1–2 V) and with low product yields (15%), this is a clear demonstration of stable BPMED operation in organic media.…”

Section: Applicationsmentioning

confidence: 99%

“…231 BPMED was also used to synthesize methyl methoxyacetate in methanol. 232,233 Here, methoxide is generated at the BPM interface, analogous to hydroxide formation from water in WD, with the methoxide ion reacting with the precursor, methyl chloroacetate. 233 Though the membrane voltages for this process are significantly larger than analogous water-based systems (single cell voltages of 5−10 V compared to 1−2 V) and with low product yields (15%), this is a clear demonstration of stable BPMED operation in organic media.…”

Section: Bpm Interface Optimizationmentioning

confidence: 99%

Recent Advances in Bipolar Membrane Design and Applications

2020

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Integration of bipolar membranes (BPMs) into electrochemical cells is an established method for acid and base generation, as well as desalinization methods. More recently, BPMs have been recognized for their ability to control the environment of half-reactions, including the maintenance of a pH gradient, without significant loss in efficiency. Over the past few years, significant advances have been made in BPM design, resulting in rapid deployment of BPMs into a wide range of applications, from mineral extraction, to energy storage and conversion frameworks, to ionotronics. Here, we explore the fundamentals of BPM operation and recent methods that have improved the performance and stability of BPMs and provide an overview of the limitations inherent to current BPM-based technologies, with a focus on future directions. Finally, we highlight research areas where BPM integration has enhanced, or is essential for, device operation, showing the versatility, potential, and broad range of research areas impacted by BPMs.

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Bipolar membrane electrodialysis in an organic medium: Production of methyl methoxyacetate

Cited by 19 publications

References 10 publications

Batch Preparation of High Basicity Polyferric Sulfate by Hydroxide Substitution from Bipolar Membrane Electrodialysis

Batch Preparation of High Basicity Polyferric Sulfate by Hydroxide Substitution from Bipolar Membrane Electrodialysis

Synthesis of quaternary ammonium hydroxide from its halide salt by bipolar membrane electrodialysis (BMED): effect of molecular structure of ammonium compounds on the process performance

Recent Advances in Bipolar Membrane Design and Applications

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