期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 1, 期 1, 页码 73-78出版社
AMER CHEMICAL SOC
DOI: 10.1021/jz900028u
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- U.S. Army Research Office [W911NF-06-1-0200]
Metal organic framework MOF-177 is one of the most promising crystalline porous adsorbents for hydrogen adsorption. The effects of oxygen and water on the structural stability of MOF-177 are investigated by X-ray diffraction (XRD) and thermogravimetric analysis (TGA). A MOF-177 sample is exposed to ambient air for 5 weeks and monitored for its structural changes by XRD. The crystal structure of MOF-177 gradually changes from hexagonal to orthogonal; and then to monoclinic in the 5-week period. The crystal structure of MOF-177 is completely destroyed after it is immersed in water. The weight loss of MOF-177 is negligible at temperatures below 330 degrees C in the presence of oxygen. However, MOF-177 totally converts to zinc oxide at 420 degrees C.
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