Selective photosynthesis of imines from biomass-derived aldehydes over Ni/TiO_(2)  

作　　者：Wu-Lin Li Qing-Qing Zhang Lin Dong Wen-Jun Zhang Li-Li Lin Zu-Peng Chen 

机构地区：[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

出　　处：《Rare Metals》2024年第3期1116-1124,共9页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22202105,22002043 and 22205113);the Natural Science Foundation of Jiangsu Province(Nos.BK20210608 and BK20210626);the Natural Science Foundation of Jiangsu Higher Education Institutions of China(Nos.21KJA150003 and 21KJB150027);the China Postdoctoral Science Foundation(No.2022M711645)。

摘　　要：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 produce 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 TiO_(2)supported nickel catalyst.The employment of methanol as the hydrogen donor and ammonia solution as the nitrogen source avoids the use of high-pressure H_(2)and expensive amines,rendering the current catalytic process safe,economical,and environmentally friendly.In depth investigations attribute the improved separation and transfer 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%;seleetivity,95.2%).Furthermore,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.

关 键 词：PHOTOCATALYSIS Biomass derivatives IMINES Reduction amination Heterogeneous catalyst 

分 类 号：TQ226.3[化学工程—有机化工] O643.36[理学—物理化学] O644.1[理学—化学]