膜科学与技术

方钠石分子筛膜的氢/氦及氢/氮分离性能研究

作者：高洋，陈长安，王晓方，宋雅琪，郭亚昆，饶咏初，冯兴文

单位：（表面物理与化学重点实验室，四川绵阳 621908）

关键词：方钠石(SOD);分子筛膜;氢气;渗透率;分离因子

出版年,卷(期):页码： 2018,38(5):31-37

摘要：

文研究了温度范围25 ~ 150 oC下，单组份气体H2、He、N2在厚度为20μm方钠石(sodalite, SOD)分子筛膜上的渗透性能。实验结果表明，在25 oC和40 kPa的条件下，SOD分子筛膜对H2、He、N2的渗透率分别为4.749×10-6，2.190×10-6和1.128×10-6 mol·m-2·s-1·Pa-1，从而计算出膜对单组份H2/He和H2/N2气体的理想分离系数分别为2.17和4.21，均高于努森扩散值。在25 ~ 150 oC的温度区间内，随着温度的升高，膜对H2、He和N2的渗透速率增加，且H2/He和H2/N2的理想分离因子增大，分别从2.17增大到3.18，从4.21增大到5.46。

In this paper, the permeation properties of H2, He and N2 in the supported sodalite(SOD) zeolite membrane at 25 - 150 °C were studied. The results showed that at 25 ℃ and 40 kPa, the single component permeances of H2, He and N2 gases are 4.749×10-6, 2.190×10-6 and 1.128×10-6 mol·m-2·s-1·Pa-1, and the ideal separation factors for H2/He and H2/N2 are 2.17 and 4.21, which are higher than the corresponding values of Knudsen diffusion. In the temperature range of 25 - 150 oC, the ideal separation factors for H2/He and H2/N2 were found to increase slightly with increasing temperature (from 2.17 to 3.18, and from 4.21 to 5.46), respectively.

第一作者简介：高洋:1991年生，男，硕士，主要研究方向为分子筛膜的合成与性能研究，E-mail: GY_9112@163.com。*通讯作者，E-mail：王晓方，wangxf_spc@163.com；陈长安，chenchangan@caep.cn

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