Supercritical CO2 assisted synthesis of highly selective nafion-zeolite nanocomposite membranes for direct methanol fuel cells
Supercritical CO2 assisted synthesis of highly selective nafion-zeolite nanocomposite membranes for direct methanol fuel cells
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DOI：
10.1016/j.memsci.2007.03.020
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发表时间：
2007-07-05
影响因子：
9.5
通讯作者：
Okunev, Alexey G.
中科院分区：
文献类型：
--
作者：
Gribov, Evgueni N.;Parkhomchuk, Ekaterina V.;Okunev, Alexey G.
我们报告的nafion-沸石（Fe-硅沸石-1）纳米复合膜的合成使用超临界CO2预处理，然后浸渍与沸石纳米粒子或原位合成的Fe-硅沸石-1内的nafion膜的孔。考察了超临界CO2活化和沸石粒径对复合膜质子传导率和甲醇渗透率的影响。在选定的情况下，膜表现出极低的甲醇渗透性和高选择性（定义为质子传导率/甲醇渗透率比）。(c)2007 Elsevier B. V.保留所有权利。
We report the synthesis of nafion-zeolite (Fe-silicalite-1) nanocomposite membranes using either a supercritical CO2 pre-treatment followed by impregnation with zeolite nanoparticles or in situ synthesis of Fe-silicalite-1 inside the pores of nafion membrane. The effects of the supercritical CO2 activation and the size of embedded zeolite particles on the proton conductivity and methanol permeability of composite membranes are observed. In selected cases, the membranes exhibit extremely low methanol permeability and high selectivity (defined as proton conductivity/methanol permeability ratio). (c) 2007 Elsevier B.V. All rights reserved.