Electrocatalytic Synthesis of Essential Amino Acids from Nitric Oxide Using Atomically Dispersed Fe on N‐doped Carbon

Author:

Xian Jiahui1,Li Suisheng1,Su Hui23,Liao Peisen14,Wang Shihan1,Zhang Yawei1,Yang Wenqian1,Yang Jun1,Sun Yamei1,Jia Yaling1,Liu Qinglin1,Liu Qinghua2,Li Guangqin1ORCID

Affiliation:

1. MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510006 China

2. National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China

3. Key Laboratory of Light Energy Conversion Materials of Hunan Province College College of Chemistry and Chemical Engineering Hunan Normal University Changsha 410081 China

4. School of Chemistry and Environment Jiaying University Meizhou 514015 China

Abstract

AbstractHow to transfer industrial exhaust gases of nitrogen oxides into high‐values product is significantly important and challenging. Herein, we demonstrate an innovative method for artificial synthesis of essential α‐amino acids from nitric oxide (NO) by reacting with α‐keto acids through electrocatalytic process with atomically dispersed Fe supported on N‐doped carbon matrix (AD‐Fe/NC) as the catalyst. A yield of valine with 32.1 μmol mgcat−1 is delivered at −0.6 V vs. reversible hydrogen electrode, corresponding a selectivity of 11.3 %. In situ X‐ray absorption fine structure and synchrotron radiation infrared spectroscopy analyses show that NO as nitrogen source converted to hydroxylamine that promptly nucleophilic attacked on the electrophilic carbon center of α‐keto acid to form oxime and subsequent reductive hydrogenation occurred on the way to amino acid. Over 6 kinds of α‐amino acids have been successfully synthesized and gaseous nitrogen source can be also replaced by liquid nitrogen source (NO3). Our findings not only provide a creative method for converting nitrogen oxides into high‐valued products, which is of epoch‐making significance towards artificial synthesis of amino acids, but also benefit in deploying near‐zero‐emission technologies for global environmental and economic development.

Publisher

Wiley

Subject

General Chemistry,Catalysis

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