从MOF衍生的PdCo和PdMn系统作为基半化中的多功能催化剂
Jordan Santiago Martinez1, Luigi Carpisassi2, Gonzalo Egea1
1Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, Valencia 46022, Spain.
新的双金属纳米复合材料催化剂 (PdCo-QT,PdMn-QT) 显示出高选择性和稳定性,用于选择性半化. 这些先进材料在批量和连续反应中提供高效的催化性能.
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.
- 纳米技术纳米技术
背景情况:
- 金属有机框架 (MOF) 为设计先进的催化材料提供可调的平台.
- 双金属纳米粒子对于增强催化活性和选择性至关重要.
- 化碳支提高了催化剂的稳定性和性能.
研究的目的:
- 合成和描述基于PdCo和PdMn的新型双金属纳米复合材料催化剂.
- 评估这些纳米复合材料的催化性能,以选择性半化.
- 研究催化剂在批量和连续相反应中的稳定性和适用性.
主要方法:
- 合成基于PdCo和PdMn的MOF,然后进行化学和热处理 (Q/T).
- 使用HRTEM,STEM-EDX,XRD,XPS和XAS进行全面的表征.
- 在温和条件下对乙烯和4-octyne的选择性半化进行催化评估.
- 评估多个周期的催化剂稳定性和连续气相反应中的性能.
主要成果:
- 成功合成了PdCo-QT和PdMn-QT催化剂,其中包括在N-doped碳上用Co或Mn修饰的Pd纳米粒子.
- 在半化中获得高选择性 (≥95 mol %) 和转化 (≥94 mol %) 以产生.
- 在五个催化周期中表现出极好的稳定性,金属液最小.
- 在高太空速度的连续气相反应中,PdCo-QT表现出了显著的活性和选择性.
结论:
- 开发的PdCo-QT和PdMn-QT纳米复合材料是选择性基半化非常有效的催化剂.
- 这些催化剂提供卓越的稳定性和活性,使它们适用于批量和连续工艺.
- 该研究强调了MOF衍生双金属纳米复合材料在先进的催化应用中的潜力.
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