抄録
The hydrogen adsorption properties and uptake capacities of three-dimensional (3-D) microporous materials of lantern-type dinuclear M(BDC)(DABCO)1/2 (M = Co(II), Cu(II), Zn(II), BDC 1,4-benzenedicarboxylate, DABCO 1,4-diazabicyclo[2.2.2]octane, Co(BDC)(DABCO)1/2 1, Cu(BDC)(DABCO)1/2 2, Zn(BDC)(DABCO)1/2 3) were investigated at different temperatures of 77 K and 87 K and pressures up to 0.1 MPa. The results from hydrogen adsorption experiments conducted at 77 K and 87 K show that all complexes have a relatively high hydrogen uptake. The isosteric heats of hydrogen adsorption data calculated based on the Clausius-Clapeyron equation are consistent with these observations, indicating strong adsorbent-adsorbate interactions. The results indicated that the hydrogen heats of adsorption were 5.9-6.5 kJ/mol, 6.3-7.9 kJ/mol, and 5.6-6.0 kJ/mol for 1, 2, and 3, respectively.
