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论文类型：期刊论文

发表时间：2010-10-15

发表刊物：JOURNAL OF MEMBRANE SCIENCE

收录刊物：SCIE、EI、Scopus

卷号：362

期号：1-2

页面范围：241-248

ISSN号：0376-7388

关键字：Palladium membrane; Silicalite-1; Zeolite; Electroless plating; Hydrogen permeation and separation

摘要：Pd membrane with excellent stability was prepared on macroporous alpha-Al2O3 tubes using a nanoporous Sil-1 zeolite as an intermediate support and diffusion barrier layer The detailed microstructure of the composite membrane was examined by scanning electron microscopy and mapped by EDXS and EPMA to reveal a palladium membrane anchored by multi-legs Pd protrutions that penetrates through the interstices of the zeolite grains into the seed layer This membrane architecture allowed the membrane to tolerate rapid and repeated cycling of gases, temperature and pressure over 300 h without lost of permeance and selectivity. The zeolite layer contributed up to 25% of the transport resistance across the Pd-Sil-1 composite membrane and has a significant effect on the hydrogen permeance (C) 2010 Elsevier B V All rights reserved