A highly CO-tolerant atomically dispersed Pt catalyst for chemoselective hydrogenation

Nature Nanotechnology
Lili LinDing Ma

Abstract

The hydrogenation activity of noble metal, especially platinum (Pt), catalysts can be easily inhibited by the presence of a trace amount of carbon monoxide (CO) in the reaction feeds. Developing CO-resistant hydrogenation catalysts with both high activity and selectivity is of great economic interest for industry as it allows the use of cheap crude hydrogen and avoids costly product separation. Here we show that atomically dispersed Pt over α-molybdenum carbide (α-MoC) constitutes a highly CO-resistant catalyst for the chemoselective hydrogenation of nitrobenzene derivatives. The Pt1/α-MoC catalyst shows promising activity in the presence of 5,000 ppm CO, and has a strong chemospecificity towards the hydrogenation of nitro groups. With the assistance of water, high hydrogenation activity can also be achieved using CO and water as a hydrogen source, without sacrificing selectivity and stability. The weakened CO binding over the electron-deficient Pt single atom and a new reaction pathway for nitro group hydrogenation confer high CO resistivity and chemoselectivity on the catalyst.

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Citations

Apr 18, 2020·Angewandte Chemie·Bing HanTao Zhang
Aug 15, 2020·Nature Communications·Xiangdong LongFuwei Li
Mar 1, 2020·Nature Communications·Zhaoyan LuoJunjie Ge
Nov 16, 2019·Nature Communications·Mohcin AkriTao Zhang
Nov 25, 2020·Nature Nanotechnology·Sharon MitchellJavier Pérez-Ramírez
Mar 17, 2021·Journal of the American Chemical Society·Kunlong LiuNanfeng Zheng
Jul 20, 2021·Advanced Materials·Zhongxin ChenKian Ping Loh
Aug 23, 2019·ACS Applied Materials & Interfaces·Weng-Chon CheongYadong Li
Apr 4, 2020·Chemical Reviews·Shufang JiYadong Li
Aug 14, 2020·Chemical Reviews·Ruixuan QinNanfeng Zheng
Feb 6, 2020·The Journal of Physical Chemistry. a·Rafael MonteiroKeisuke Takahashi
Dec 29, 2020·Journal of the American Chemical Society·Lili LinDing Ma

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Methods Mentioned

BETA
transmission
X-ray

Software Mentioned

FEFF
IFEFFIT
Vienna Ab Initio Simulation Package

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