| Autor: |
Sun, Zuo-Shu, Xiang, Xue-Yan, Zhao, Qiu-Ping, Tang, Zhao, Jiang, Shi-Yi, Lu, Tong-Bu, Zhang, Zhi-Ming, Wang, Baifan, Yin, Hua-Qing |
| Zdroj: |
Chinese Journal of Catalysis; October 2024, Vol. 65 Issue: 1 p153-162, 10p |
| Abstrakt: |
Electrocatalytic urea synthesis provides a favorable strategy for conventional energy-consuming urea synthesis, but achieving large-scale catalyst synthesis with high catalytic efficiency remains challenging. Herein, we developed a simple method for the preparation of a series of FeNi-alloy-based catalysts, named FeNi@nC-T(nrepresents the content of nanoporous carbon as 1, 3, 5, 7 or 9 g and T= 900, 950, 1000 or 1100 °C), for highly performed urea synthesis viaNO3−and CO2co-reduction. The FeNi@7C-1000 achieved a high urea yield of 1041.33 mmol h−1gFeNi−1with a Faradaic efficiency of 15.56% at –1.2 V vs. RHE. Moreover, the scale-up synthesized FeNi@7C-950-S (over 140 g per batch) was achieved with its high catalytic performance and high stability maintained. Mechanism investigation illuminated that the Ni and Fe sites catalyze and stabilize the key *CO and *N intermediates and minimize the C–N coupling reaction barriers for highly efficient urea synthesis. |
| Databáze: |
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