Journal
APPLIED SURFACE SCIENCE
Volume 257, Issue 8, Pages 3392-3398Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2010.11.032
Keywords
MOF-5; DMF; DEF; Desorption
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Funding
- U.S. National Science Foundation [NSF-CBET-0929207]
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Both dimethylformamide (DMF) and diethylformamide (DEF) are important solvents for the synthesis of Zn4O(C8H4O4)(3) framework (MOF-5). It is generally recognized that DMF molecules can be completely displaced by CH2Cl2 during the synthesis of MOF-5. Herein, however, it was found that the DMF molecules inside the pores of the MOF-5 framework cannot be displaced by CH2Cl2. The desorption of the DMF molecules from the pores, which requires a temperature of 100 degrees C or above, is the first order with activation energy of 56.38 kJ/mol. In contrast, DEF molecules can be completely displaced by CH2Cl2 during the synthesis of MOF-5, because DEF molecules cannot penetrate into the pores of the MOF-5 paste. (C) 2010 Elsevier B.V. All rights reserved.
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