In high-temperature water (HTW), NaHCO3 is reduced into formate using isopropanol as a reducing agent. Based on the initial reducing agent isopropanol, a relatively high yield of formate was obtained of about 70%. Another curious aspect in HTW is that water molecules may act as a catalyst for hydrogen-transfer reduction of NaHCO3 with isopropanol, taking the place of the metal catalysts used in heterogeneous and homogeneous catalytic hydrogenation of CO2. The present work should help facilitate studies for developing new green processes for the transformation of CO2 using organic hydrogen sources as the reducing agents.
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