A Fluorinated Metal-Organic Framework for High Methane Storage at Room Temperature

摘要

A fluorinated metal-organic framework NOTT-108 with single pure-phase has been synthesized for the first tine, which has enabled us to examine the effect of the substituted fluorine atoms on the methane storage. The activated NOTT-108a shows a permanent porosity comparable to its isoreticular NOTT-101a but exhibits a higher volumetric methane storage capacity of 247 cm(3) (STP) cm(-3) and a working capacity of 186 cm(3) (STP) cm(-3) (at 298 K and 65 bar) than 237 cm(3) (STP) cm(-3) and 181 cm(3) (STP) cm(-3) of NOTT-101a, attributed to the higher polarity/dipole moment of C-F bonds compared to that of C-H bonds,for the enhanced electrostatic interaction with methane molecules.