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ISSN: 2155-9589

Journal of Membrane Science & Technology
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Research Article

Sintering of the Immersion-Induced Porous Stainless Steel Hollow Fiber Membranes

Haixia Li, Jian Song and Xiaoyao Tan*

State Key Laboratory of Separation Membranes and Membrane Processes, Department of Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China

*Corresponding Author:
Xiaoyao Tan
State Key Laboratory of Separation Membranes and Membrane Processes
Department of Chemical Engineering, Tianjin Polytechnic University
Tianjin 300387, China
Tel: (86) 22-83955663
E-mail: [email protected]

Received date: October 18, 2015; Accepted date: November 12, 2015; Published date: November 14, 2015

Citation: Li H, Song J, Tan X (2015) Sintering of the Immersion-Induced Porous Stainless Steel Hollow Fiber Membranes. J Membra Sci Technol 5:136. doi: 10.4172/2155-9589.1000136

Copyright: © 2015 Li H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Porous stainless steel (PSS) hollow fiber membranes have been fabricated by an immersion induced phase inversion and sintering technique. This paper is mainly focused on the sintering process. The influences of the sintering atmosphere as well as the sintering temperature and dwelling time on the microstructure, mechanical strength, and the permeation properties of the hollow fiber have been extensively investigated. Experimental results indicate that a H2-containing sintering atmosphere favors the formation of highly permeable porous PSS membranes with desirable mechanical strength. But the sintering atmosphere with H2 concentration larger than 25% is not necessary as it yields a marginal improvement on the membrane performances. For a sufficient sintering, the sintering temperature should be controlled between 1050 and 1100°C, which ensures not only a desirable mechanical strength but also good membrane porosity. For cost effective and less time consuming, sintering time can be controlled within two hours. The resultant PSS hollow fibers satisfy the longstanding criteria of porous supports for gas separation membranes in terms of high porosity, high fluid permeance and robustness to withstand stress.

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