Synthesis, characterization and performance evaluation of mesoporous Mordenite Framework Inverted (MFI) zeolite membrane by carbon black in water permeability

Articles in Press

Document Type : Original Article

Authors

1 Nanostructure Materials Research Center, Sahand University of Technology

2 Faculty of Chemical Engineering, Green Carbon Research Center, Sahand University of Technology

3 Faculty of Chemical Engineering, Nanostructure Materials Research Center, Sahand University of Technology

10.22034/ijche.2023.378644.1269

Abstract

The aim of this research is creating a mesoporous structure in the MFI zeolite membrane layer and increase the pores diameter in order to increase the water permeability. The mesoporous structure was created by adding carbon black to the synthesis solution of the membrane in the in-situ hydrothermal method. The X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Berner-Emmett-Taylor (BET) and nitrogen gas permeability tests were used to characterize and the water permeation test was used to investigate the performance. The results showed the successful synthesis of the MFI zeolite membrane layer with proper crystallinity on the α-alumina support with the thickness of about 15 µm and the pore size between 4.5-20 nm, so that the largest amount of meso-pores had a diameter of 7.4 nm. The diameter of the pores has increased by 10 times compared to the synthesis without the presence of carbon black. The results of the water permeation test showed that increasing the the pores diameter using carbon black could increase the water flux of the membrane (26 L/m2.h) up to 14-75 times compared to microporous membranes (0.35-1.74 L/m2.h). Investigating the water flux of the membrane for water containing dissolved solids showed that the water flux of the mesoporous membrane (12 L/m2.h) is still higher than the microporous membranes after 2 h.

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Iranian Chemical Engineering Journal

Articles in Press, Accepted Manuscript
Available Online from 29 May 2023

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