Volume 137, Issue 18 e202501040
Forschungsartikel

Oxygen-Mediated Hydrogen Spillover Promotes Stable Synthesis of Vinyl Chloride on Ru Single-Atom Catalysts

Yurui Fan

Yurui Fan

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Dr. Haomiao Xu

Corresponding Author

Dr. Haomiao Xu

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Mingming Wang

Mingming Wang

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Zhisong Liu

Zhisong Liu

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003 China

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Hongyuan Qi

Hongyuan Qi

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Wenjun Huang

Wenjun Huang

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Lei Ma

Lei Ma

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Feng Yu

Feng Yu

State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003 China

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Zan Qu

Zan Qu

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

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Dr. Pengfei Xie

Corresponding Author

Dr. Pengfei Xie

College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310058 China

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Bin Dai

Bin Dai

State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003 China

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Naiqiang Yan

Naiqiang Yan

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240 China

Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092 China

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First published: 18 February 2025

Abstract

Ru single-atom catalysts hold great promise for the robust synthesis of vinyl chloride through acetylene hydrochlorination. However, the easy over-chlorination of Ru atoms during reaction suppress the catalytic activity and stability. Herein, we have synthesized an oxygen doped Ru single-atom catalyst by a sequential oxygen etching strategy, which delivers the remarkable yield of vinyl chloride monomer (>99.38 %) and stability (>900 h, 180 h−1), far beyond those reported Ru counterparts. Experimental results and theoretical calculations reveal that the asymmetric structure of single-atom Ru promotes an unconventional oxygen-mediated hydrogen spillover after the activation of hydrogen chloride, which enables the reaction to proceed through Eley-Rideal mechanism with a reduced energy barrier of acetylene hydrochlorination compared to the traditional Langmuir–Hinshelwood pathway. As a result, the enhanced reaction kinetics further restrict over-chlorination of single-atom Ru, thereby ensuring the excellent durability. This work offers a strategy for designing multifunctional catalysts with enhanced performances for acetylene hydrochlorination.

Conflict of Interests

The authors declare no conflict of interest

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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