An article CeO2 immobilized on magnetic core-shell microparticles for one-pot synthesis of imines from benzyl alcohols and anilines: Support effects for activity and stability WOS:000458596500074 published article about SELECTIVE AEROBIC OXIDATION; EFFICIENT CATALYST; TANDEM SYNTHESIS; AMINES; HYDROGENATION; NANOPARTICLES; REDUCTION; NANORODS; CERIA; HYDROAMINATION in [Long, Yu; Gao, Zekun; Qin, Jiaheng; Wu, Wei; Dong, Zhengping; Ma, Jiantai] Lanzhou Univ, State Key Lab Appl Organ Chem, Gansu Prov Engn Lab Chem Catalysis, Coll Chem & Chem Engn, Lanzhou 730000, Gansu, Peoples R China; [Wang, Peng] Liaoning Univ Technol, Sch Chem & Environm Engn, Jinzhou 121001, Peoples R China; [Zhang, Lin] 1 High Sch, Minle 734500, Gansu, Peoples R China in 2019.0, Cited 44.0. Name: Benzyl Alcohol. The Name is Benzyl Alcohol. Through research, I have a further understanding and discovery of 100-51-6
Four types of core-shell materials with magnetic Fe3O4 microparticles as the core were prepared through different approaches using dopamine, glucose, tetrabutyl orthotitanate (TBOT), and tetraethyl orthosilicate (TEOS) as the shell precursor, respectively. CeO2 nanoparticles (NPs) was successfully immobilized onto these supports to fabricate efficient catalysts for the tandem catalytic synthesis of imines from benzyl alcohols and anilines at low temperature under air atmosphere. The as-prepared catalysts were detailedly characterized by TEM, EDX, XRD, FT-IR, XPS VSM, ICP, and CO2-TPD. Interestingly, these prepared catalysts showed higher catalytic activity than reported CeO2 catalysts. Most attractively, the catalyst with a shell of nitrogen-doped-carbon derived from dopamine exhibited the best catalytic property, and outstanding stability and recyclability in the cycle experiment. According to the XPS and CO2-TPD characterization, the enhanced performance of Fe3O4@CN@CeO2 composites can be attributed to two reasons as follows: (1) the immobilization of CeO2 improved its alkalinity at low reaction temperature, and alkalinity is beneficial to promote the oxidation of alcohols to benzaldehyde, which is the ratedetermining step for this tandem reaction; (2) the doped nitrogen generated Lewis basic site could satisfactorily stabilize Ce3+/Ce4+ pair of CeO2, which determined the catalytic activity and stability of CeO2 based catalysts for this tandem reaction. Moreover, the prepared catalysts could be facilely recovered from the reaction mixture with an external magnet. This work may provide a useful strategy for con- structing CeO2 based catalysts for green and sustainable catalysis. (C) 2018 Elsevier Inc. All rights reserved.
Name: Benzyl Alcohol. About Benzyl Alcohol, If you have any questions, you can contact Long, Y; Gao, ZK; Qin, JH; Wang, P; Wu, W; Zhang, L; Dong, ZP; Ma, JT or concate me.
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Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles