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对于Mg-Pt金属间化催化剂的相位工程,以抵抗CO中毒

Xiaojun Lu¹, Zichuang Li¹, Qing Zhang^2,3

¹Frontiers Science Center for Transformative Molecules, State Key Laboratory of Polyolefins and Catalysis, School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, China.

Angewandte Chemie (International ed. in English)

|November 3, 2025

概括

工程- (Mg-Pt) 催化剂在化反应中表现出高活性,即使存在一氧化碳 (CO). 这一突破为使用工业提供了解决方案,克服了催化剂中CO中毒的问题.

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.
表面化学表面化学

背景情况:

组金属 (PGM) 是重要的工业化催化剂.
对一氧化碳 (CO) 的敏感性限制了它们与原始的使用.
开发耐碳催化剂对于工业应用至关重要.

研究的目的:

设计 (Pt) 催化剂,提高对CO的耐受性.
调查相位工程对在 CO 存在下 Pt 催化剂性能的影响.
了解新型Mg-Pt催化剂中CO耐受性背后的机制.

主要方法:

通过受控反应性金属支相互作用 (RMSI) 合成Mg-Pt金属间催化剂 (Mg29Pt4和Mg3Pt).
操纵Pt纳米颗粒的结晶性,以实现不同的Mg-Pt相.
通过使用具有不同度的选择性化反应评估了催化剂活性和CO耐受性.

主要成果:

尽管存在CO,Mg29Pt4在化反应中表现出了显著的活性和选择性.
Mg29Pt4在0.2体积%的CO中保持了约88%的活性,显著超过金属Pt.
增强的CO耐受性归因于富含电子的Pt位点和低d带中心,抑制了CO吸附.
催化剂在化基因,化和化中显示出广泛的适用性.

结论:

Mg-Pt金属间化合物的相位工程创造了高度耐CO的化催化剂.
通过Mg-Pt相形成控制Pt电子特性是克服CO中毒的关键.
这种方法使得能够设计出强大的Pt催化剂,用于利用不纯流的工业过程.

关键词:

不同质的催化剂.在金属间的金属间.阶段工程是阶段工程.金金是什么意思耐毒性耐毒性耐毒性耐毒性

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