MOF衍生的高氧空缺CuO/CeO2催化剂用于低温CO优先氧化
Fen Liu1, Xiaohua Chen1, Weiwei Jie1
1College of Chemistry and Materials, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Nanchang 330045, China.
Journal of colloid and interface science
|July 2, 2024
概括
从金属有机框架中提取的ceria催化剂上的氧化铜有效地去除燃料电池中的一氧化碳 (CO). 最好的催化剂在100°C时实现了100%的CO转化,显示出极好的稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 电化学 电化学 电化学
背景情况:
- 一氧化碳 (CO) 是对质子交换膜燃料电池 (PEMFC) 的一种毒素.
- 首选氧化CO (CO-PROX) 对于去除残留的CO至关重要.
- 催化剂中的氧气空缺对于CO吸附和激活至关重要.
研究的目的:
- 为了合成和研究CuO/CeO2催化剂,来自CE-金属有机框架 (MOFs) 的CO-PROX.
- 探索MOF前体中的有机配体对催化性能的影响.
- 阐明CO-PROX在这些新型催化剂上的机制.
主要方法:
- 使用来自Ce-MOF前体的各种有机配体的CuO/CeO2催化剂的热水合成.
- 评估CO-PROX的性能,包括CO转换和稳定性.
- 现场拉曼光谱和现场扩散反射红外里叶变换光谱 (DRIFTS) 用于机械研究.
主要成果:
- O/CeO-135催化剂来自同甲酸三碳酸 (1,3,5-H) 的BTC,表现出优异的性能.
- 在100°C达到100%的CO转化,具有出色的稳定性和广泛的操作温度范围.
- 从1,3,5-H3BTC前体和氧空缺增强了催化活性的结构效益.
结论:
- 源自MOF的CuO/CeO2催化剂为燃料电池中高效的CO去除提供了一个有前途的途径.
- 在MOF前体中选择有机配体显著影响催化剂的特性和性能.
- 氧气空缺在CO-PROX反应期间在CO吸附和激活中发挥着动态作用.
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