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Updated: Jan 12, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
CO-free selective hydrogenation of CO2 to value-added formate under low-temperature aqueous conditions using a
Hongjin Park1, Minkyoung Go1, Sungho Yoon1
1Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea. sunghoyoon@cau.ac.kr.
Abstract:
Considering that potassium hydroxide (KOH) is well known for its strong carbon dioxide (CO2) capture capability, a comparative study was conducted on low-temperature heterogeneous hydrogenation catalysts operable under CO2/hydrogen (H2)/KOH conditions. A series of Ru-based heterogeneous catalysts, supported on commercial activated carbon or coordinated with NN, PP, and PNP ligands were tested under identical conditions. Among them, the PNP ligand-based catalyst, Ru-MACHO-POMP (porous organometallic polymer), exhibited the highest activity, selectively producing potassium formate (HCO2K) with 100% yield even at 80 °C. Notably, no bicarbonate or carbon monoxide (CO) was detected after the reaction, indicating complete CO-free conversion. The catalyst maintained its activity with the porosity retained after multiple cycles, with no detectable Ru leaching. This study experimentally demonstrates the feasibility of a catalyst system capable of delivering high selectivity and stable performance under low-temperature conditions, providing a foundation for further catalyst development in KOH-based hydrogenation systems.
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