Novel porous carbons synthesized from polymeric precursors for hydrogen storage
Novel porous carbons synthesized from polymeric precursors for hydrogen storage
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DOI：
10.1016/j.ijhydene.2008.02.019
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发表时间：
2008-05-01
影响因子：
7.2
通讯作者：
Park, Soo-Jin
中科院分区：
文献类型：
--
作者：
Kim, Byung-Joo;Lee, Young-Seak;Park, Soo-Jin
本文以高分子离子交换树脂为原料，采用化学活化法制备了多孔碳，以获得新型储氢材料，并对多孔碳的吸附特性进行了研究。采用N-2/77 K吸附等温线，采用BET法和D-R法研究了其结构性质。利用PCT装置研究了多孔碳在298 K和100 bar下的储氢行为。在观察活化后的结果中，储氢容量明显提高。然而，也发现吸附总量与吸附剂的比表面积不成正比。这表明储氢量不仅与比表面积或总孔隙体积有关，还与吸附剂的微孔体积分数或平均孔径有关。(c) 2008年国际氢能协会。Elsevier Ltd.出版。版权所有。
In this work, porous carbons were prepared from polymeric ion-exchangeable resin by a chemical activation method in order to obtain novel hydrogen storage materials, and the adsorption characteristics of the porous carbons were investigated. The textural properties were studied by BET and D-R methods with N-2/77 K adsorption isotherms. The hydrogen storage behaviors of the porous carbons at 298 K and 100 bar were studied using a PCT apparatus. In the observed post-activation result, the hydrogen storage capacity was markedly improved. However, it was also found that the total amount of adsorption was not proportional to the specific surface area of the adsorbates. This indicates that hydrogen storage could be a function not only of specific surface area or total pore volume but also of microporevolume fraction or the average pore size of adsorbents. (c) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.