膜科学与技术

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Preparation and characterization of α-Al2O3 hollow fiber supports

Authors： XU Jishang, HE Yong, GU Xuehong*, JIN Wanqin

Units： State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology

KeyWords： dry-wet spinning process; ?-Al2O3; hollow fiber supports; NaA; zeolite membrane

ClassificationCode：TQ343.41

year,volume(issue):pagination： 2011,31(2):19-23

Abstract：

a-Al2O3 hollow fiber supports were prepared by dry-wet spinning process. Effects of Al2O3/PESf(polyethersulfone) ratio, sintering temperature, holding time and particle size of raw material on structure and performances of supports were studied systematically. The optimized hollow fiber support had the permeance of 4.09×10-5 mol•s-1•m-2•Pa-1, bending strength of 142.7 MPa, maximum pore diameter of 0.66 μm and average pore diameter of 0.56 μm. The NaA zeolite membrane was synthesized on the optimized support, which showed the separation factor of water/ethanol of >5000 and the flux up to 7.37 kg•m-2 •h-1.

Funds：

国家自然科学基金(20706030, U0834004); 973计划(2009CB623403); 江苏省高校自然科学基金(09KJA530002); 教育部和南京市留学回国人员基金.

AuthorIntro：

徐吉上(1984-), 男, 江苏徐州人, 在读硕士, 从事膜材料制备与分离. *通讯联系人

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