文献类型：期刊文献

英文题名：Highly permeable porous silicon carbide support tubes for the preparation of nanoporous inorganic membranes

作者：Deng, Wangxue[1];Yu, Xinhai[1,2];Sahimi, Muhammad[1];Tsotsis, Theodore T.[1]

机构：[1]Univ So Calif, Mork Family Dept Chem Engn & Mat Sci, Los Angeles, CA 90089 USA;[2]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：451

起止页码：192

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20134416929018);WOS:【SCI-EXPANDED(收录号:WOS:000327892900022)】；

基金：The support of the U.S. Department of Energy (DE-SC0003586) and the National Science Foundation (CBET-0854427) are gratefully acknowledged. the Superior Graphite Co. is also acknowledged for kindly providing the SiC powders. The help of Dr. Suzhou Zhang (from East China University of Science and Technology) in performing the compressive strength tests, and the assistance of Mr. Mingyuan Ge, Ms. jia Liu, and Ms. Xin Fang (from the University of Southern California) in carrying out the AFM and/or SEM characterization work are also gratefully acknowledged.

语种：英文

外文关键词：Silicon carbide tubes; Silicon carbide supports; Sintering; Silicon carbide membranes

摘要：Highly permeable and mechanically strong porous SiC tubular supports, used for the fabrication of nanoporous SiC membranes, are prepared by the pressureless sintering of beta-sic particles. Their transport characteristics are studied via net gas (He and At) permeation tests, while their surface structure is characterized by atomic force microscopy and electron microscopy analysis. In this paper, the effects of the type of starting powders used and their composition, the sintering temperature, and the amount or sintering aids utilized on the transport characteristics and the surface roughness of the sintered SiC porous supports are systematically investigated. These tubular SiC supports exhibit very high fluxes (a He permeance as high as 5.8 x 10(-5) mol m(-2) Pa-1 s(-1)) and are mechanically strong to withstand the pressure drops required in their use as membrane supports. They have been used in the preparation of high quality SiC nanoporous membranes. (C) 2013 Elsevier B.V. All rights reserved.