Hydrogen and water vapor adsorption properties on cation-exchanged mordenite for use to a tritium recovery system
Hydrogen and water vapor adsorption properties on cation-exchanged mordenite for use to a tritium recovery system
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DOI：
10.1016/j.fusengdes.2014.01.064
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发表时间：
2014-10-01
影响因子：
1.7
通讯作者：
Yamanishi, Toshihiko
中科院分区：
文献类型：
--
作者：
Kawamura, Yoshinori;Edao, Yuki;Yamanishi, Toshihiko
利用吸附或催化同位素交换的氚回收系统已经被提出用于核聚变反应堆的固体增殖包层系统。合成沸石通常用作吸附剂或化学交换催化剂的基质。并且，众所周知，其性质容易通过交换其阳离子而改变。合成丝光沸石是一种具有较大硅铝比的沸石。关于阳离子交换丝光沸石的吸氢性能，目前已有很多报道。此外，本文作者还报道了与钙离子交换的丝光沸石（Ca-MOR）在77 K下显示出比分子筛5A（MS 5A）更大的氢吸附容量。因此，本文主要研究了过渡金属离子交换丝光沸石的吸氢性能。与Ca-MOR相比，Ag-MOR在77 K的低压范围内表现出相当大的氢吸附容量。从吸附率角度的讨论还在进行中，但如果采用Ag-MOR，则有可能设计出更紧凑的氚回收系统的低温吸附柱。(C)2014爱思唯尔有限公司版权所有。
Tritium recovery system using adsorption or catalytic isotope exchange has already been proposed for a solid breeding blanket system of a nuclear fusion reactor. Synthetic zeolite is often used as an adsorbent or a substrate of chemical exchange catalyst. And, it is well known that its property is changed easily by exchanging its cations. Synthetic mordenite is one of zeolites having fairly large silica/alumina ratio. There are many reports about hydrogen adsorption properties of cation-exchanged mordenite so far. And, the present authors also have reported that cation-exchanged mordenite with Ca ion (Ca-MOR) indicated fairly large hydrogen adsorption capacity at 77K in comparison with Molecular Sieves 5A (MS5A). So, in this work, hydrogen adsorption properties of cation-exchanged mordenite with transition metal ion were investigated mainly. The cation-exchanged mordenite with Ag ion (Ag-MOR) has indicated considerably large hydrogen adsorption capacity in lower pressure range at 77 K in comparison with Ca-MOR. The discussion from the viewpoint of adsorption rate is still remaining, but more compact cryosorption column for tritium recovery system is possible to design if Ag-MOR is adopted. (C) 2014 Elsevier B.V. All rights reserved.