Tungsten incorporated mobil-type eleven zeolite membranes: Facile synthesis and tuneable wettability for highly efficient separation of oil/water mixtures

Hammad Saulat; Jianhua Yang; Tao Yan; Waseem Raza; Wensen Song; Gaohong He

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Tungsten incorporated mobil-type eleven zeolite membranes: Facile synthesis and tuneable wettability for highly efficient separation of oil/water mixtures

Full Length Article | Updated：2026-01-06

- Tungsten incorporated mobil-type eleven zeolite membranes: Facile synthesis and tuneable wettability for highly efficient separation of oil/water mixtures
- Tungsten incorporated mobil-type eleven zeolite membranes: Facile synthesis and tuneable wettability for highly efficient separation of oil/water mixtures
- 中国化学工程学报（英文版） 2023年60卷第8期页码：242-252
- Affiliations：
  
  1. State Key Laboratory of Fine Chemicals, Institute of Adsorption and Inorganic Membrane, Dalian University of Technology,Dalian,China,116024
  2. Panjin Institute of Industrial Technology, Dalian University of Technology,Panjin,China,124221
  3. Institute of Advance Study, Shenzhen University,Shenzhen,China,518060
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2023
- Accepted：
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Hammad Saulat, Jianhua Yang, Tao Yan, 等. Tungsten incorporated mobil-type eleven zeolite membranes: Facile synthesis and tuneable wettability for highly efficient separation of oil/water mixtures[J]. 中国化学工程学报（英文版）, 2023,60(8):242-252.

Hammad Saulat, Jianhua Yang, Tao Yan, Waseem Raza, Wensen Song, Gaohong He. Tungsten incorporated mobil-type eleven zeolite membranes: Facile synthesis and tuneable wettability for highly efficient separation of oil/water mixtures[J]. Chinese Journal of Chemical Engineering, 2023, 60(8): 242-252.
Hammad Saulat, Jianhua Yang, Tao Yan, 等. Tungsten incorporated mobil-type eleven zeolite membranes: Facile synthesis and tuneable wettability for highly efficient separation of oil/water mixtures[J]. 中国化学工程学报（英文版）, 2023,60(8):242-252. DOI：

Hammad Saulat, Jianhua Yang, Tao Yan, Waseem Raza, Wensen Song, Gaohong He. Tungsten incorporated mobil-type eleven zeolite membranes: Facile synthesis and tuneable wettability for highly efficient separation of oil/water mixtures[J]. Chinese Journal of Chemical Engineering, 2023, 60(8): 242-252. DOI：

摘要

Abstract

Tungsten (W) incorporated mobil-type eleven (MEL) zeolite membrane (referred to as W-MEL membrane) with high separation performance was firstly explored for the separation of oil/water mixtures under the influence of gravity. W-MEL membranes were grown on stainless steel (SS) meshes through

in-situ

hydrothermal growth method facilitated with (3-aminopropyl)triethoxysilane (APTES) modification of stainless steel meshes

which promote the heterogeneous nucleation and crystal growth of W-MEL zeolites onto the mesh surface. W-MEL membranes were grown on different mesh size supports to investigate the effect of mesh size on the separation performance of the membrane. The as-synthesized W-MEL membrane supported on 500 mesh (25 μm) (W-MEL-500) exhibit the hydrophilic nature with a water contact angle of 11.8° and delivers the best hexane/water mixture separation with a water flux and separation efficiency of 46247 L·m

-2

·h

-1

and 99.5%

respectively. The wettability of W-MEL membranes was manipulated from hydrophilic to hydrophobic nature by chemically modifying with the fluorine-free compounds (hexadecyltrimethoxysilane (HDTMS) and dodecyltrime

thoxysilane (DDTMS)) to achieve efficient oil-permselective separation of heavy oils from water. Among the hydrophobically modified W-MEL membranes

W-MEL-500-HDTMS having a water contact angle of 146.4° delivers the best separation performance for dichloromethane/water mixtures with a constant oil flux and separation efficiency of 61490 L·m

-2

·h

-1

and 99.2%

respectively along with the stability tested up to 20 cycles. Both W-MEL-500-HDTMS and W-MEL-500-DDTMS membranes also exhibit similar separation performances for the separation of heavy oil from sea water along with a 20-fold lower corrosion rate in comparison with the bare stainless-steel mesh

indicating their excellent stability in seawater. Compared to the reported zeolite membranes for oil/water separation

the as-synthesized and hydrophobically modified W-MEL membranes shows competitive separation performances in terms of flux and separation efficiency

demonstrating the good potentiality for oil/water separation.

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