Microwave synthesis of chromium terephthalate MIL-101 and its benzene sorption ability

The synthesis of nanoporous chromium terepthalate MIL-101, using microwave irradiation and its benzene sorption ability, were investigated. The as-synthesized MIL-101 solid was purified by the method of microwave irradiation to obtain high porosity. The solid obtained from the process was cooled, filtered, washed with water, and dried at 150°C in air. The structure and crystallinity of the synthesized samples were determined using XRD analysis. The vapor-phase absorption of benzene was carried out at 30°C using a specially designed volumetric absorption apparatus, employing a constant-temperature oven. The samples were dehydrated under high vacuum before absorption and benzene was purified by freeze-pump-thaw cycles. The absorption capacity was calculated by the ideal gas law after absorption for 15 minutes at a constant temperature.