Sustainable synthesis of N-doped carbon to stabilize Ru species for CO2 hydrogenation to formic acid

Autor: Kyung Rok Lee, Arsalan Haider, Kwangho Park, Sunghee Ahn, Kwang-Deog Jung
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of CO2 Utilization, Vol 86, Iss , Pp 102896- (2024)
Druh dokumentu: article
ISSN: 2212-9839
DOI: 10.1016/j.jcou.2024.102896
Popis: In this study, we developed nitrogen-doped carbon supporting materials from biomass-derived fertilizers, offering a sustainable and eco-friendly approach to heterogeneous catalysis for CO2 hydrogenation. Three types of fertilizers (AA50, AA80, and FV), derived from different biomass sources, were evaluated there potential to prepare the N-doped carbon structure. The synthesis of fertilizer-based supporting materials resulted in an abundant amount and a specific structure of doped nitrogen, essential for immobilizing atomically dispersed Ru catalysts during CO2 hydrogenation. The catalytic performance of the Ru catalysts supported on optimized fertilizer-derived materials exhibited a turnover number of 2748 over two hours and maintaining 98 % stability across five recycling tests. Analysis of spent catalysts showed that our fertilizer-based supports effectively prevented the sintering and leaching of the Ru catalysts. Moreover, the capability for industrial application was validated through a continuous flow reactor test, achieving an average formate productivity of 697 mmol•gcat−1h−1 over 100 hours. These results highlight the synthesized Ru catalyst on fertilizer-derived carbon material as a promising solution for eco-friendly CO2 hydrogenation to formic acid.
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