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
分类号: 0611
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.

基金项目:
国家磁约束核聚变能发展研究专项(2015GB109004); 国家自然科学基金(21401174)

作者简介:
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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