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Synthesis of a zeolite membrane as a protective layer on a metallic Pd composite membrane for hydrogen purification
Yu, Jiafeng; Qi, Chenchen; Zhang, Jixin; Bao, Chun; Xu, Hengyong
刊名JOURNAL OF MATERIALS CHEMISTRY A
2015
DOI10.1039/c4ta06463a
3期:9页:5000-5006
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Energy & Fuels ; Materials Science
关键词[WOS]MOLECULAR-SIEVE FILMS ; LTA MEMBRANES ; PERMEATION CHARACTERISTICS ; SODALITE MEMBRANES ; CO INHIBITION ; SEPARATION ; PALLADIUM ; PERFORMANCE ; MECHANISM ; GROWTH
英文摘要Palladium composite membranes are used widely in the hydrogen purification process owing to their excellent hydrogen permeability and selectivity. However, they can lose hydrogen permeability irreversibly when exposed to a small amount of impurity gases, which severely limits their applications. Here, a seed-free hydrothermal method was developed to synthesize a zeolite membrane on the surface of an ultra-thin metallic Pd composite membrane to offer protection from impurity gases. The impurity gases with a kinetic diameter larger than the zeolite pore size were prevented from coming in direct contact with the Pd composite membrane. The presence of a protective zeolite membrane distinctly suppressed the hydrogen permeance decline in a 5% propylene/hydrogen mixture, which greatly enhanced the stability of the Pd membrane. SEM and XRD showed that the acid pretreatment before the secondary hydrothermal growth process and the rotary state were beneficial for synthesizing thin and uniform zeolite membranes. With increasing synthesis time, the protective effects of the zeolite membrane were enhanced significant due to the reduction of defects.
语种英语
WOS记录号WOS:000349997000031
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145969
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
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GB/T 7714
Yu, Jiafeng,Qi, Chenchen,Zhang, Jixin,et al. Synthesis of a zeolite membrane as a protective layer on a metallic Pd composite membrane for hydrogen purification[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(9):5000-5006.
APA Yu, Jiafeng,Qi, Chenchen,Zhang, Jixin,Bao, Chun,&Xu, Hengyong.(2015).Synthesis of a zeolite membrane as a protective layer on a metallic Pd composite membrane for hydrogen purification.JOURNAL OF MATERIALS CHEMISTRY A,3(9),5000-5006.
MLA Yu, Jiafeng,et al."Synthesis of a zeolite membrane as a protective layer on a metallic Pd composite membrane for hydrogen purification".JOURNAL OF MATERIALS CHEMISTRY A 3.9(2015):5000-5006.
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