Abstract—We prepared an Al-containing ZSM-58 zeolite membrane and compared it with the separation performance of an all-silica ZSM-58 zeolite membrane. First, the ZSM-58 zeolite crystals were synthesized from a solution with the same membrane synthesis solution composition, and the characteristics of ZSM-58 zeolite crystals with a difference in Si/Al molar ratio were studied. As-made crystals should have high porosity and crystallinity. All-silica and Al-containing ZSM-58 zeolite membranes were applied in the separation of an equimolar CO
2/CH
4 and CO
2/N
2 mixture of pressure drop and temperature. The Al-containing ZSM-58 zeolite membrane showed a higher selectivity than the all-silica ZSM-58 zeolite membrane, which was confirmed at a lower temperature and feed pressure.
Index Terms—CO
2 separation, DDR type zeolite, zeolite membrane, ZSM-58.
Eiji Hayakawa and Shuji Himeno are with the Department of Science of Technology Innovation, Nagaoka University of Technology, 1603-1, Kamitomioka-cho, Nagaoka, Niigata 940-2188, Japan (e-mail: e_hayakawa@stn.nagaokaut.ac.jp, himeno@vos.nagaokaut.ac.jp).
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Cite: E. Hayakawa and S. Himeno, "Synthesis and Characteristics of Al-containing ZSM-58 Zeolite Membrane for CO2 Separation," International Journal of Chemical Engineering and Applications vol. 11, no. 1, pp. 6-13, 2020.
