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

Wu-Lin Li ¹Qing-Qing Zhang ¹Lin Dong ¹Wen-Jun Zhang ¹Li-Li Lin ²Zu-Peng Chen¹

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作者信息

1. 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
2. Institute of Industrial Catalysis,State Key Laboratory of Green Chemistry Synthesis Technology,College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China
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Abstract

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.

Key words

Photocatalysis/Biomass derivatives/Imines/Reduction amination/Heterogeneous catalyst

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基金项目

National Natural Science Foundation of China(22202105)

National Natural Science Foundation of China(22002043)

National Natural Science Foundation of China(22205113)

Natural Science Foundation of Jiangsu Province(BK20210608)

Natural Science Foundation of Jiangsu Province(BK20210626)

Natural Science Foundation of Jiangsu Higher Education Institutions of China(21KJA150003)

Natural Science Foundation of Jiangsu Higher Education Institutions of China(21KJB150027)

China Postdoctoral science Foundation(2022M711645)

出版年

2024

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

参考文献量41

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