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Free keywords:
carbon dioxide fixation
formic acid
homogeneous catalysis
hydrogenation
supercritical fluids
Abstract:
Dual role for CO2: Pure formic acid can be obtained continuously by hydrogenation of CO2 in a single processing unit (see scheme). An immobilized ruthenium organometallic catalyst and a nonvolatile base in an ionic liquid (IL) are combined with supercritical CO2 as both reactant and extractive phase.