Modification of commercial NaY zeolite to give high water diffusivity and adsorb a large amount of water
Modification of commercial NaY zeolite to give high water diffusivity and adsorb a large amount of water
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DOI：
10.1016/j.jcis.2015.05.050
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发表时间：
2015-10-01
影响因子：
9.9
通讯作者：
Sugiyama, Shigeru
中科院分区：
文献类型：
--
作者：
Katoh, Masahiro;Kimura, Michisato;Sugiyama, Shigeru
以NaY分子筛为干燥剂，用1 M NaOH水溶液对商品NaY分子筛进行碱处理，然后用0.5M Mg（NO3）（2）水溶液对NaY分子筛进行Mg 2+离子交换。碱处理（AT）可以去除Y型沸石骨架中的硅原子选择性，提高Y型沸石的水扩散性能。另一方面，Mg 2+离子交换的NaY沸石的吸附量增加的水。所制备的Y-AT-Mg分子筛既有吸水速度，又有30 ℃吸附与100 ℃脱附的吸水量差异较大。(C)2015 Elsevier Inc. All rights reserved.
By using NaY zeolites as desiccant materials, commercial NaY zeolite was alkali treated with 1 M NaOH aqueous solution and then Mg2+ ion-exchanged by 0.5 M Mg(NO3)(2) aqueous solution. Alkali treatment (AT) of NaY zeolite removed silicon atoms selectivity from the framework of Y-type zeolite and enhanced water diffusivity of Y-type zeolite. On the other hand, Mg2+ ion-exchange of NaY zeolite increased the amount of water adsorbed. Prepared Y-AT-Mg zeolite had both water adsorption velocity and a large difference of water adsorbed amount between adsorption at 30 degrees C and desorption at 100 degrees C. (C) 2015 Elsevier Inc. All rights reserved.