TiO2-decorated NaA zeolite membranes with improved separation stability for pervaporation dehydration of N, N-Dimethylacetamide

Zhang, Yuting; Zhu, Xinfeng; Chen, Shengze; Liu, Jinyun; Zhou, Hong; Wang, Jiacheng; Li, Zhi; Gao, Xuechao; Xu, Rong; Gu, Xuehong

doi:10.1016/j.memsci.2021.119398

Cited by 14 publications

(7 citation statements)

References 33 publications

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“…The sorption selectivity ( α s ) of the membrane for water was calculated from the volume fraction of solvent i in acetone/water/membrane (

ϕ_{i}

, i is water, j is acetone) and in feed acetone‐water ( u i ) using the following Equation 2.

α_{s} = \frac{\frac{ϕ_{i}}{ϕ_{j}}}{\frac{u_{i}}{u_{j}}}

A batch‐stirred cell with an adjustable downstream pressure was used for PV experiments 1 . The volume of the feed side compartment was 150 cm 3 and the area (A) of the membrane was 19.6 cm 2 . A 3 h equilibrium time was given for the 1st PV experiment 7 .…”

Section: Methodsmentioning

confidence: 99%

“…However, the distillation of aqueous acetone to a less than 10 wt.% water concentration followed by further dehydration by membrane‐based pervaporation (PV) makes the process energy efficient 1,2 . In fact, in recent times solvent dehydration by a low energy and environment‐friendly green process like PV membranes has become industrially very attractive 3–9 . Thus, several hydrophilic membranes were reported for pervaporative dehydration of acetone 2,10–15 .…”

Section: Introductionmentioning

confidence: 99%

“…1,2 In fact, in recent times solvent dehydration by a low energy and environment-friendly green process like PV membranes has become industrially very attractive. [3][4][5][6][7][8][9] Thus, several hydrophilic membranes were reported for pervaporative dehydration of acetone. 2,[10][11][12][13][14][15] In general, hydrophilic membranes with high water selectivity and good mechanical stability are required for pervaporative dehydration of acetone containing >90 wt.% acetone in the feed.…”

mentioning

confidence: 99%

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Separation of acetone‐water mixtures by pervaporation using NaMMT‐loaded PVA‐chitosan nanocomposite IPN membranes

Das,

Ray

2023

Polymer Engineering & Sci

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NaMMT clay incorporated and maleic acid (MA) crosslinked polyvinyl alcohol (PVA)‐chitisan (CS) interpenetrating network (IPN) type nanocomposite membranes were prepared for dehydration of acetone by pervaporation (PV). FTIR, XRD, SEM, UV spectroscopy, mechanical properties, contact angle measurement, and DTA‐TGA were used to characterize these membranes. The effect of clay, CS, and MA on the flux and separation factor for water were statistically optimized by Box–Behnken design (BBD). Accordingly, the membrane prepared with 39.3 wt.% CS, 3 wt.% each of MA and NaMMT nanoclay showed a flux/separation factor of 0.176–0.733 kg/m2h/ 277–168 for the pervaporative dehydration of 99 wt.% acetone.Highlights IPN nanocomposite membranes were prepared from PVA, CS, and nano clay. Structure and properties of the IPNs were characterized. Synthesis parameters were optimized by BBD. Membranes showed high flux and water selectivity for acetone dehydration by PV.

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“…The sorption selectivity ( α s ) of the membrane for water was calculated from the volume fraction of solvent i in acetone/water/membrane (

ϕ_{i}

, i is water, j is acetone) and in feed acetone‐water ( u i ) using the following Equation 2.

α_{s} = \frac{\frac{ϕ_{i}}{ϕ_{j}}}{\frac{u_{i}}{u_{j}}}

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Separation of acetone‐water mixtures by pervaporation using NaMMT‐loaded PVA‐chitosan nanocomposite IPN membranes

Das,

Ray

2023

Polymer Engineering & Sci

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“…The relationship between temperature and flux can be expressed by Arrhenius equation (Eq. ( 3)) [29].…”

Section: Effect Of Pv Temperaturementioning

confidence: 99%

Optimal preparation of low-cost and high-permeation NaA zeolite membrane for effective ethanol dehydration

Charik

Achiou

Belgada

et al. 2022

Microporous and Mesoporous Materials

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“…shown in Table 4. For the inorganic membrane, such as zeolite membrane TiO 2 (0.5)/NaA zeolite and NaA zeolite (Mitsui), when separating 10wt % DMAc/H 2 O, the permeation ux is up to 5 L/m 2 h, and their separation factor is above 1000 [33][34] . Because of their low solvent resistance, few polymer materials can be applied to prepare a pervaporation membrane for DMAc dehydration.…”

Section: Effect Of Operating Conditions On the Pervaporation Performa...mentioning

confidence: 99%

Crosslinking modification of polyamide composite membranes toward high performance for DMAc/H2O dehydration

Wei

Zhong

et al. 2022

Preprint

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Polar aprotic solvents such as dimethylacetamide (DMAc) play a crucial role in the chemical industry. Pervaporation is a membrane separation technology suitable for the dehydration of organic solvents. In this study, thin polyamide (PA) pervaporation membranes with different structures were prepared by interfacial polymerization using trimesoyl chloride (TMC) as the organic phase, and either m-phenylenediamine (MPDA), propylene diamine (DAPE), or tetraethylene pentamine (TEPA) as the aqueous phase. In addition, the PA pervaporation membranes' chemical composition, hydrophilicity, surface morphology, and cross-sectional morphology were examined by fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), atomic force microscopic (AFM) and contact angle (CA) analysis, respectively. The results showed that the PA pervaporation membrane prepared with TEPA as the aqueous monomer exhibited a high degree of crosslinking, resulting in dense molecular chains. The permeation flux and water content of 10 wt % DMAc/H2O system were 17.8 L m− 2 h− 1 and 98.4 wt % at 500 Pa and 70 ° C, respectively. Therefore, the TEPA-PA membrane has a good separation performance even when dealing with a low-concentration DMAc/H2O system.

show abstract

TiO2-decorated NaA zeolite membranes with improved separation stability for pervaporation dehydration of N, N-Dimethylacetamide

Cited by 14 publications

References 33 publications

Separation of acetone‐water mixtures by pervaporation using NaMMT‐loaded PVA‐chitosan nanocomposite IPN membranes

Separation of acetone‐water mixtures by pervaporation using NaMMT‐loaded PVA‐chitosan nanocomposite IPN membranes

Optimal preparation of low-cost and high-permeation NaA zeolite membrane for effective ethanol dehydration

Crosslinking modification of polyamide composite membranes toward high performance for DMAc/H2O dehydration

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