Microporous Polymers as Potential Hydrogen Storage Materials
Microporous Polymers as Potential Hydrogen Storage Materials
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DOI：
10.1002/marc.200700054
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发表时间：
2007-05
影响因子：
4.6
通讯作者：
N. McKeown;P. Budd;D. Book
中科院分区：
文献类型：
--
作者：
N. McKeown;P. Budd;D. Book
微孔有机聚合物提供了通过物理吸附在低温和中等压力下安全储存氢的可能性。已经研究了一系列具有固有微孔性（PIM）的聚合物。迄今为止最好的PIM基于三蝶烯单体，并且在10 bar/77 K下吸收2.7%的H2。超交联聚合物（HCP）也显示出有前途的性能，特别是在>10巴的压力下。H2等温线的形式受微孔分布的影响，如在PIM中发现的，更高浓度的超微孔（孔径<0.7 nm）与增强的低压吸附相关。聚合物相对于其他微孔材料（碳和金属有机框架）的性能进行了比较，并提出了有前途的方法来提高微孔聚合物的氢吸收。
Microporous organic polymers offer the possibility of storing hydrogen safely at low temperatures and moderate pressures via physisorption. A range of polymers of intrinsic microporosity (PIMs) have been studied. The best PIM to date is based on a triptycene monomer and takes up 2.7% H2 by mass at 10 bar/77 K. Hypercrosslinked polymers (HCPs) also show promising performance, particularly at pressures >10 bar. The form of the H2 isotherm is influenced by the micropore distribution, a higher concentration of ultramicropores (pore size <0.7 nm), as found in PIMs, being associated with enhanced low pressure adsorption. The performance of polymers relative to other microporous materials (carbons and metal-organic frameworks) is compared and promising methods to enhance the hydrogen uptake of microporous polymers are suggested.