Two new calcium and strontium metal–organic frameworks [Ca(SBA)] (CYCU-1) and [Sr(SBA)] (CYCU-2) were prepared by microwave-assisted reactions. Both rigid frameworks are thermally stable up to about 450 °C. As verified by N2, CO2, and H2sorption measurements, the thermally activated CYCU-1 and CYCU-2 exhibit significant microporosity.
