Mass transfer model, preparation and applications of zeolite membranes for pervaporation dehydration: A review

Zhang, Chun; Peng, Li; Ji, Jiang; Gu, Xuehong

doi:10.1016/j.cjche.2017.09.014

Cited by 43 publications

(12 citation statements)

References 120 publications

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“…The transport mechanism of permeating molecules through zeolite membranes is mainly described with the adsorption–diffusion model . The E P value is a combination of the enthalpy of sorption and the activation energy of diffusion.…”

Section: Resultsmentioning

confidence: 99%

“…The transport mechanism of permeating molecules through zeolite membranes is mainly described with the adsorption− diffusion model. 31 The E P value is a combination of the enthalpy of sorption and the activation energy of diffusion. A positive value of E P indicates that the transport is governed by diffusion, while a negative E P suggests that the sorption is dominant in the transport process.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 91%

See 1 more Smart Citation

Reliable Fabrication of Thin and (h0l)-Oriented Zeolite Al-beta Membranes for Separation of Methanol/Methyl tert-Butyl Ether Mixtures

Zhang

2019

Ind. Eng. Chem. Res.

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Dense, ∼1 μm thick and (h0l)-oriented zeolite Al-beta membranes have been successfully fabricated on randomly oriented seed layers by secondary growth in the fluoride medium. The incorporation of Al species into the zeolite framework is demonstrated by FTIR, EDS, and 29 Si and 27 Al MAS NMR measurements. The Al incorporation enhances the nucleation rate. The synthesized zeolite Al-beta membranes are applied in methanol/methyl tert-butyl ether (MeOH/MTBE) separation via pervaporation. It exhibits a high flux of 1.83 kg m −2 h −1 with respect to 20 wt % MeOH/ MTBE mixture at 50 °C, while the corresponding separation factor is 20.39. Compared with available zeolite membranes reported in the literature, the synthesized Al-beta membrane is more promising for MeOH/MTBE separation because of its high flux with a moderate separation factor.

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Section: Resultsmentioning

confidence: 99%

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 91%

Reliable Fabrication of Thin and (h0l)-Oriented Zeolite Al-beta Membranes for Separation of Methanol/Methyl tert-Butyl Ether Mixtures

Zhang

2019

Ind. Eng. Chem. Res.

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“…PV is a complex process that includes mass transfer and heat transfer at the same time. The models used to describe the mechanism of the transfer process include the solution-diffusion model [ 57 ], pore flow model [ 58 ], virtual phase transition solution-diffusion model [ 59 ], and irreversible thermodynamics model [ 60 ]. Among the most widely accepted is the solution-diffusion model.…”

Section: Mechanism Operation Mode and Numerical Simulation Of Thementioning

confidence: 99%

Fabrication, Properties, Performances, and Separation Application of Polymeric Pervaporation Membranes: A Review

Wang

et al. 2020

Polymers

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Membrane separation technologies have attracted great attentions in chemical engineering, food science, analytical science, and environmental science. Compared to traditional membrane separation techniques like reverse osmosis (RO), ultrafiltration (UF), electrodialysis (ED) and others, pervaporation (PV)-based membrane separation shows not only mutual advantages such as small floor area, simplicity, and flexibility, but also unique characteristics including low cost as well as high energy and separation efficiency. Recently, different polymer, ceramic and composite membranes have shown promising separation applications through the PV-based techniques. To show the importance of PV for membrane separation applications, we present recent advances in the fabrication, properties and performances of polymeric membranes for PV separation of various chemicals in petrochemical, desalination, medicine, food, environmental protection, and other industrial fields. To promote the easy understanding of readers, the preparation methods and the PV separation mechanisms of various polymer membranes are introduced and discussed in detail. This work will be helpful for developing novel functional polymer-based membranes and facile techniques to promote the applications of PV techniques in different fields.

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“…Probably, the resulting composite membranes can exhibit excellent performance. Several studies have shown that the development of typical composite membranes with antifouling behavior has demonstrated superior performances in diverse applications such as solvent extraction, pervaporation, desalination, volatile organic extraction from the air, microextraction, the concentration of pharmaceutical waste, and dehumidification [43][44][45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Zeolite ZSM-22 Precursor on a UF-PES Selective Substrate Layer for Salts Rejection

2022

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Fabrication of the ZSM-22/Polyethersulfone (ZSM-22/PES) membranes as selective salt filters represent a growing membrane technological area in separation with the potential of high economic reward based on its low energy requirements. The incorporation of ZSM-22 zeolite material as additives into the PES polymer matrix has the prospective advantage of combining both the zeolite and polymer features while overcoming the limitations associated with both materials. This work investigated the influence of the nature of the silica precursor on ZSM-22 zeolite hydrothermally synthesised using colloidal (C60) and fumed (C60) silica to Si/Al of 60. The successful synthesis of the highly crystalline zeolitic materials was confirmed through XRD, FTIR, and SEM with EDX. The ZSM-22 additives were directly dispersed into a PES polymeric matrix to form a casting solution for the preparation of the ZSM-22/PES selective substrate layers via a phase inversion method for salts rejection. The polymeric PES was selected as an organic network in which the content of the ZSM-22 zeolite (ranging between 0 and 1.0 wt.%), was obtained and characterised by XRD, FTIR, and SEM analysis, as well as water contact angle (WCA) measurement and dead-end filtration cell. The phase inversion preparation method has induced the resulting ZSM-22/PES NF substrates anisotropy, as attributed to a high water flux to the above 700 L·m−2·h−1; high selectivity and rejection of salts to above 80% is revealed by the obtained results. The materials also exhibited improved antifouling behavior to above 70% flux recovery ratios. As such, the nature of the silica precursor influences ZSM-22 zeolite synthesis as a potential additive in the PES polymer matrix and led to the enhanced performance of the pure PES ultrafiltration membrane.

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Mass transfer model, preparation and applications of zeolite membranes for pervaporation dehydration: A review

Cited by 43 publications

References 120 publications

Reliable Fabrication of Thin and (h0l)-Oriented Zeolite Al-beta Membranes for Separation of Methanol/Methyl tert-Butyl Ether Mixtures

Reliable Fabrication of Thin and (h0l)-Oriented Zeolite Al-beta Membranes for Separation of Methanol/Methyl tert-Butyl Ether Mixtures

Fabrication, Properties, Performances, and Separation Application of Polymeric Pervaporation Membranes: A Review

Influence of the Zeolite ZSM-22 Precursor on a UF-PES Selective Substrate Layer for Salts Rejection

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