Synthesis of ZSM-5-type zeolite membranes on, porous disks loaded with different amounts of seed

Date

2008-07-16

Author

Dincer, Eser
Kalıpçılar, Halil
Culfaz, Ali

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ZSM-5-type zeolite membranes were synthesized at 130 degrees C on alumina supports coated with seed crystals by vacuum seeding. Compact and uniform ZSM-5 layers were formed on the support surfaces when the amount of seed was less than 1 mg/cm(2). Higher loading of seed crystals resulted in an asymmetric structure with a compact and uniform ZSM-5 layer on top, the support at the bottom, and the seed layer in between. Fifty-one membranes were prepared on supports coated with different amounts of seed. About 70% of the membranes synthesized on seeded supports were impermeable to nitrogen before calcination, whereas all nine membranes synthesized on plain supports were permeable to nitrogen before calcination. One-third of the membranes synthesized on seeded supports had N-2/SF6 ideal selectivity higher than the quality criterion of 40 after calcination. Membranes with high N-2/SF6 ideal selectivity also showed high n-C4H10/i-C4H10 separation selectivity.

Subject Keywords

Industrial and Manufacturing Engineering, General Chemistry, General Chemical Engineering

URI

https://hdl.handle.net/11511/48128

Journal

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

DOI

https://doi.org/10.1021/ie0715411

Collections

Department of Chemical Engineering, Article

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Citation Formats

E. Dincer, H. Kalıpçılar, and A. Culfaz, “Synthesis of ZSM-5-type zeolite membranes on, porous disks loaded with different amounts of seed,” INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, pp. 4743–4749, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48128.