NaY Zeolite Membrane Prepared by Using Pre-absorbed Nanosized NaY Zeolite Synthesized by Microwave Heating

Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (10): 1857.

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NaY Zeolite Membrane Prepared by Using Pre-absorbed Nanosized NaY Zeolite Synthesized by Microwave Heating

CHENG Zhi-Lin^1,2, LIN Hai-Qiang², CHAO Zi-Sheng², WAN Hui-Lin²

1. Department of Chemistry, East NormaLUniversity, Shanghai 200062, China;
2. State Key Laboratory for Physical Chemistry of Solid Surface, Department of Chemistry, Xiamen University, Xiamen 361005, China

Received:2002-10-30 Online:2003-10-24 Published:2003-10-24

Abstract

Abstract: Nanosized NaY zeolite was successfully synthesized by microwave heating at an ambient pressure and under reflux.The XRD and SEM results indicate that the resulted NaY zeolite has an average crystal size of 40nm.The compact NaY zeolite membranes consisting of twinborn and polycrystalline crystal were synthesized on a porous alumina substrate by using pre-absorbed nanosized NaY zeolite obtained above and then by being combined with a secondary in situ synthesis.The measuring result for the separation of CO₂/N₂mixture show that the separating selectivity increased with increasing temperature, and reached a maximum of 4.0 at 140 ℃.

Key words: Microwave heating, Nanometer, NaY Zeolite membrane, Separation

CLC Number:

O612

TrendMD:

CHENG Zhi-Lin, LIN Hai-Qiang, CHAO Zi-Sheng, WAN Hui-Lin . NaY Zeolite Membrane Prepared by Using Pre-absorbed Nanosized NaY Zeolite Synthesized by Microwave Heating[J]. Chem. J. Chinese Universities, 2003, 24(10): 1857.

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NaY Zeolite Membrane Prepared by Using Pre-absorbed Nanosized NaY Zeolite Synthesized by Microwave Heating

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