期刊
NEW JOURNAL OF CHEMISTRY
卷 43, 期 10, 页码 4092-4099出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nj06362a
关键词
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资金
- Natural Science Foundation of China [21171004]
- Science and Technology Project of Anhui Province [1604a0802113]
- Anhui Province Academic Technology Leader Training Funded Projects
- Key Technologies Research and Development Program of Anhui Province [1704a0802134]
- Natural Science Foundation of Anhui [1708085QE120]
- Major Projects of Natural Science Research in Colleges and Universities of Anhui [KJ20171495]
Nanostructured Zr(iv) metal organic frameworks (MOFs-808) with high stability are synthesized by using trimesic acid (BTC), a highly electron-deficient and polar molecule, as an organic ligand in order to produce efficient adsorbents for hydrogen gas. The MOFs-808 are characterized by XRD, FT-IR, SEM, TEM, specific surface area measurements and thermogravimetric analysis, and the conditions (e.g., the reactant molar ratio, the amount of solvent, the reaction temperature and the reaction time) for synthesis of MOFs-808 are optimized. The MOF-808 obtained under optimized preparation conditions has higher crystallinity, a larger specific surface area, and relatively high stability both in acidic solution and at temperatures up to 300 degrees C. The hydrogen storage capacity of the optimized MOF-808 under 4 MPa reaches 7.31 wt% at 77 K, which is close to the ultimate target defined for hydrogen storage. Our results indicate that the presence of the electron-deficient ligand on MOFs-808 favors the adsorption of hydrogen gas.
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