有效的原子分散Co/N-C催化剂用于甲酸脱和转移氧化瓦尼林的氧化
Xiaoyu Li1, Guilong Lu1, Tianyu Wang2
1Laboratory of Industrial Chemistry, Ruhr University Bochum, 44780, Bochum, Germany.
ChemSusChem
|March 28, 2024
概括
原子分散的催化剂在添加的碳上有效催化酸脱和素氧化. 这些单原子催化剂表现出极好的活性和稳定性,归因于强大的-相互作用.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 原子分散催化剂具有独特的特性和高效率.
- 添加碳 (N-C) 材料是有希望的催化剂支.
- 金属-素协调是催化剂合成的一个新兴策略.
研究的目的:
- 为了合成和评估原子分散的Co/N-C催化剂.
- 为了研究它们在酸脱 (FAD) 和素氧化 (HDO) 中的性能.
- 阐明结构-活动关系和催化机制.
主要方法:
- 用于催化剂制备的金属-矿协调策略.
- 甲酸脱 (FAD) 和素氧化 (HDO) 反应.
- 用X射线光电子光谱 (XPS) 和X射线吸收光谱 (XAS) 进行表征.
- 密度函数理论 (DFT) 计算用于机械洞察力.
主要成果:
- 在FAD中,Co/N-C催化剂表现出卓越的活性,抗酸性和稳定性.
- Co 种类的高分散,增加的表面积和强大的 Co-N 相互作用有助于提高性能.
- XPS和XAS证实了Co-N3活性部位的存在.
- DFT的计算表明,单原子Co上的酸吸附比Co集群的酸吸附更强.
- 在使用酸作为源的素转移HDO中观察到有希望的性能.
结论:
- 通过金属-质素协调合成的原子分散的Co/N-C催化剂在FAD和HDO中表现出卓越的性能.
- Co-N3 站点被确定为主要活跃中心.
- 这些催化剂为化学转化提供了可持续的替代方案,利用无外部H2. 2的甲状酸进行HDO.
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