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用连接物调节的PtO单原子催化剂,用于高效的乙烯化

Li Liu¹, Qiangang Zhang², Sen Wang²

¹School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China; Laboratory of New Energy and Materials, Xinjiang Institute of Engineering, Urumqi 830011, China.

Journal of colloid and interface science

|February 15, 2026

概括

一种新的单原子催化剂 (Pt-L2/SAC) 具有增强的活性和稳定性,用于乙烯基化,使用协调策略开发. 这种催化剂表现出高转换率和低失活率,性能优于现有方法.

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
化学工程是化学工程的重要组成部分.

背景情况:

单原子催化剂 (SAC) 是有前途的,但通常缺乏足够的活性,用于工业应用,如乙化.
目前正在使用基于的催化剂,但对环境造成了担忧.

研究的目的:

开发一种高度活性和稳定的单原子催化剂,用于乙烯化.
通过采用新的协调策略来解决当前催化剂的局限性.

主要方法:

在球形活性炭上制造Pt单原子催化剂,使用4-甲基酸 (L2) 作为配体 (Pt-L2/SAC).
在特定条件下的催化性能评估 (200°C,GHSV(C2H2) = 50 h−1).
利用表征技术和密度函数理论 (DFT) 计算来理解催化剂的机制.

主要成果:

Pt-L2/SAC实现了99.63%的初始乙转化率,其低失活率为0.01%h-1.1.
该L2配体通过强的Pt-O键有效地定了Pt原子,确保了原子的分散和稳定性.
DFT的计算证实了连接物调节了Pt的电子结构,减轻了确定速率的步骤.

结论:

开发的Pt-L2/SAC催化剂显示出对乙烯化的优越活性和稳定性.
使用含氧联结体的协调策略对于设计先进的单原子催化剂是有效的.
这项工作在这个重要的工业过程中为基于的催化剂提供了潜在的替代品.

关键词:

乙烯的化化.Pt-O协调,电子结构一个原子的催化剂.

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