A mesoporous cationic Cr-MOF, termed FJI-C10, containing imidazolium moieties, Lewis acidic Cr sites and free halogens is constructed for the first time by a topology-guided one-pot synthesis. FJI-C10 exhibits excellent performances in CO adsorption (20.2 wt% at 273 K and 1 bar) and chemical fixation of CO into cyclic carbonates without the use of co-catalyst under atmospheric pressure.
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