Continuous‐Flow Hydrogenation of Carbon Dioxide to Pure Formic Acid using an Integrated scCO ₂ Process with Immobilized Catalyst and Base

Dual role for CO(2): Pure formic acid can be obtained continuously by hydrogenation of CO(2) in a single processing unit. An immobilized ruthenium organometallic catalyst and a nonvolatile base in an ionic liquid (IL) are combined with supercritical CO(2) as both reactant and extractive phase.