Effects of different silica intermediate layers for hydrogen diffusion enhancement of palladium membranes applied to porous stainless steel support
Effects of different silica intermediate layers for hydrogen diffusion enhancement of palladium membranes applied to porous stainless steel support
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不同二氧化硅中间层对多孔不锈钢载体钯膜氢扩散增强的影响
DOI：
10.1038/s41598-020-62054-3
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发表时间：
2020
影响因子：
4.6
通讯作者：
Shigeru Sugiyama
中科院分区：
文献类型：
--
作者：
Masahiro Katoh;Tomoe Ueshima;Masahiro Takatani;Hikaru Sugiura;Kota Ominami;Shigeru Sugiyama
采用Silicalite-1和γ-Al_2O_3双中间层对多孔不锈钢载体进行改性，以增强钯薄膜的氢扩散。其中一层Silicalite-1是用水热合成法在多孔SUS载体上制备的。由于Silicalite-1和SUS的膨胀系数不同，导致膜的膨胀/收缩行为不同，导致膜的耐久性降低。然后将中间层介孔MCM-48粉末或商用球形无孔二氧化硅颗粒通过吸气作用添加到多孔超声载体上，采用浸渍法制备γ-Al_2O_3，并对Pd膜进行化学镀。含球形二氧化硅颗粒的Pd膜(膜厚11μm)在600−°C下的渗透系数约为10×10 6mol·m−2·S MCM 1·pa−1，高于含−48的Pd膜(膜厚7 μm)。含有球形二氧化硅颗粒的Pd膜的耐久性高于含有MCM-48粉末的Pd膜。这些结果表明，商业化的球形无孔二氧化硅颗粒将均匀地占据SUS管的孔道，提高了Pd膜的透氢性能和耐久性。
Porous stainless steel (SUS) supports were modified with double intermediate layers, silicalite-1 and γ-alumina, to enhance the hydrogen diffusion of a thin palladium membrane. One of layers, silicalite-1, was prepared using the hydrothermal synthetic method on porous SUS supports. The differences in expansion/contraction behaviors caused by different thermal coefficients of expansion between silicalite-1 and the SUS resulted in a lowering of the durability of the membrane. Intermediates layers of mesoporous MCM-48 powders or commercial spherical non-porous silica particles were then applied to porous SUS supports via aspiration, γ-alumina was introduced by dip-coating, and the Pd membrane was subjected to electro-less plating. H2permeance of the Pd membrane (membrane thickness: 11 μm) containing spherical silica particles was around 10 × 10−6mol·m−2·s−1·Pa−1at 600 °C, which was higher than that of the Pd membrane (membrane thickness: 7 μm) containing MCM-48. The durability of the Pd membrane containing spherical silica particles was higher than that of the version containing MCM-48 powders. These results suggest that commercial spherical non-porous silica particles will uniformly occupy the pores of the SUS tubes and enhance the H2permeance and durability of the Pd membrane.
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影响因子：
4.9
作者：
Boote, Brett;Subramanian, Hariharaputhiran;Ranjit, Koodali T.
通讯作者：
Ranjit, Koodali T.
DOI：
10.5360/membrane.19.171
发表时间：
1994
期刊：
--
影响因子：
--
作者：
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影响因子：
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作者：
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碱处理ZSM-5沸石中孔对水吸附的影响
影响因子：
0.8
作者：
M. Katoh;Ayaka Satoh;T. Horikawa;Keizo Nakagawa;S. Sugiyama
通讯作者：
S. Sugiyama
不锈钢载体上钯和钯银合金层的表征
影响因子：
1.7
作者：
M. Katoh;Akira Sondoh;T. Horikawa;T. Tomida
通讯作者：
T. Tomida