Title

Desorption of dimethylformamide from Zn 4 O(C 8 H 4 O 4 ) 3 framework

Document Type

Article

Publication Date

2-1-2011

Department

Department of Materials Science and Engineering

Abstract

Both dimethylformamide (DMF) and diethylformamide (DEF) are important solvents for the synthesis of Zn 4 O(C 8 H 4 O 4 ) 3 framework (MOF-5). It is generally recognized that DMF molecules can be completely displaced by CH 2 Cl 2 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 CH 2 Cl 2 . The desorption of the DMF molecules from the pores, which requires a temperature of 100 °C or above, is the first order with activation energy of 56.38 kJ/mol. In contrast, DEF molecules can be completely displaced by CH 2 Cl 2 during the synthesis of MOF-5, because DEF molecules cannot penetrate into the pores of the MOF-5 paste.

Publisher's Statement

© 2010 Elsevier B.V. All rights reserved. Publisher’s version of record: https://doi.org/10.1016/j.apsusc.2010.11.032

Publication Title

Applied Surface Science

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