首页|Selective photosynthesis of imines from biomass-derived aldehydes over Ni/TiO2

Selective photosynthesis of imines from biomass-derived aldehydes over Ni/TiO2

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Photocatalytic reductive amination of biomass-derived aldehydes is a desirable way to selectively upgrade biomass into value-added nitrogen-containing chemicals under mild conditions.However,it is challenging to pro-duce imines in high selectivity because of the undesirable side reactions caused by the activity of functional groups.Here,we demonstrate the highly reactive and selective production of imines from biomass derived aldehydes via the photocatalytic reductive amination,using a defective TiO2 supported nickel catalyst.The employment of methanol as the hydrogen donor and ammonia solution as the nitrogen source avoids the use of high-pressure H2 and expensive amines,rendering the current catalytic process safe,economical,and environmentally friendly.In depth investigations attribute the improved separation and trans-fer of photogenerated charge carriers to the presence of oxygen vacancies and decorated Ni nanoparticles,thereby accelerating the production of imines from benzaldehyde amination(conversion,95.8％;selectivity,95.2％).Fur-thermore,the developed system could be easily translated to the photocatalytic conversions of various biomass derived aldehydes,which provided an example of a cost-effective and sustainable approach for the valorization of biomass derived feedstocks.

PhotocatalysisBiomass derivativesIminesReduction aminationHeterogeneous catalyst

Wu-Lin Li、Qing-Qing Zhang、Lin Dong、Wen-Jun Zhang、Li-Li Lin、Zu-Peng Chen

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Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,International Innovation Center for Forest Chemicals and Materials,College of Chemical Engineering,Nanjing Forestry University,Nanjing 210037,China

Institute of Industrial Catalysis,State Key Laboratory of Green Chemistry Synthesis Technology,College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu Higher Education Institutions of ChinaNatural Science Foundation of Jiangsu Higher Education Institutions of ChinaChina Postdoctoral science Foundation

222021052200204322205113BK20210608BK2021062621KJA15000321KJB1500272022M711645

2024

10.1007/s12598-023-02504-9

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(3)
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