在重建的RuO2/Co(OH)2上调节活性,用于选择性氨合成的催化剂
Anquan Zhu1, Heng Liu2,3, Lulu Qiao4
1Department of Materials Science and Engineering, & Center of Super-Diamond and Advanced Films, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, P. R. China.
这项研究通过管理活性生成和前催化剂重建,通过电化学酸盐减少增强氨生产. 优化的RuO2/Co(OH) 2催化剂显示出高的氨产量和效率.
科学领域:
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
- 可持续化学 可持续化学
背景情况:
- 电化学酸盐降解 (eNO3RR) 是可持续氨生产和循环支持的关键.
- 预催化剂重建和复杂的反应中间体阻碍了eNO3RR的效率.
研究的目的:
- 通过管理活性 (*H) 生产和前催化剂重建,通过eNO3RR改善氨生产.
- 为eNO3RR和相关应用开发稳定高效的催化剂.
主要方法:
- 定制RuO2/Co3O4预催化剂并优化电解质组成 (OH和NO3度).
- 在现场催化剂重建到RuO2/Co(OH) 2.
- 电化学性能测试和机械学研究.
主要成果:
- 在 -0.3 V 与 RHE 的情况下,达到 35.9 ± 0.9 mg h-1 cm-2 的氨产量和 98.1 ± 2.6% 的法拉代效率 (FE).
- 在可充电Zn-NO3电池中经过260多小时的稳定运行.
- 确定了富含电子的RuO2,促进*H生成和随后的酸中间体的化在Co(OH) 2.
结论:
- 对*H生成和前催化剂重建的战略管理对于eNO3RR中的选择性氨形成至关重要.
- RuO2/Co(OH) 2催化剂显示出氨合成,废水处理和储能方面的巨大潜力.
- 了解电子和质子转移对于设计高效的eNO3RR催化系统至关重要.
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