CO-resistant hydrogenation over noble metal/α-MoC catalyst

Xuan Liang, Xiangxin Jin, Shixiang Yu, Chengyu Li, Chuqiao Song, Guan Sheng, Xuemin Ye, Rui Gao (), Lili Lin () and Ding Ma ()
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Xuan Liang: Peking University
Xiangxin Jin: Zhejiang University of Technology
Shixiang Yu: Peking University
Chengyu Li: Peking University
Chuqiao Song: Zhejiang University of Technology
Guan Sheng: Zhejiang University of Technology
Xuemin Ye: Zhejiang University of Technology
Rui Gao: Inner Mongolia University
Lili Lin: Zhejiang University of Technology
Ding Ma: Peking University

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract “Hydrogenation by crude H2 - dehydrogenation to produce pure H2” strategy using liquid organic hydrogen carriers (LOHCs) can reduce the cost and shorten the process of hydrogen purification and utilization. The critical challenge is to eliminate catalyst poisoning by CO impurity in crude H2. Here, we develop a Pd/α-MoC catalyst that enables efficient hydrogenation of N-LOHCs under crude hydrogen feeds (CO concentration>5 vol%) below 150 °C, and has an activity 1-2 orders of magnitude higher than that of traditional Pd-based catalysts. The CO-resistant hydrogenation is also successfully conducted in the models of industrial crude H2 including CO, CO2 and CH4. Water, as solvent, contributes greatly to the hydrogenation activity against CO poisoning, since the utilization of low-temperature water gas shift (WGS) reaction. Moreover, the positive-charged Pd species hinder the combination of H* from WGS reaction and suppressed the undesirable H2 formation and release, which explains the substantial improvement in the performance of Pd/α-MoC compared to that of Pt/α-MoC.

Date: 2025
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DOI: 10.1038/s41467-025-59321-0

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