Nanoporous Polyporphyrin as Adsorbent for Hydrogen Storage
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- 作者：Jiangbin Xia ; Shengwen Yuan ; Zhuo Wang ; Scott Kirklin ; Brian Dorney ; Di-Jia Liu ; Luping Yu
- 刊名：Macromolecules
- 出版年：2010
- 出版时间：April 13, 2010
- 年：2010
- 卷：43
- 期：7
- 页码：3325-3330
- 全文大小：839K
- 年卷期：v.43,no.7(April 13, 2010)
- ISSN：1520-5835
文摘
Novel polyporphyrins with high surface area over 1500 m2/g have been synthesized, and their hydrogen absorption capacities were measured. Porphyrin functionalized with thiophenyl groups was designed as starting monomer; the porphyrin cores offer coordination sites for metal ions which could potentially enhance the interaction with hydrogen for favorable hydrogen storage while the thiophenyl groups are used for cross-linking the monomers under oxidative coupling conditions to yield highly porous networks. These polyporphyrins adsorb up to 5.0 mass % H2 at 77 K and 65 bar. Compared with metal free polymer, iron(II)-containing polymer shows finite increase in heat of adsorption for hydrogen, suggesting a promising approach for designing high heat of adsorption porous materials.