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Citation: Zhixin Zhang, Yehong Wang, Min Wang, Jianmin Lü, Lihua Li, Zhe Zhang, Mingrun Li, Jingyang Jiang, Feng Wang. An investigation of the effects of CeO₂ crystal planes on the aerobic oxidative synthesis of imines from alcohols and amines[J]. Chinese Journal of Catalysis, ;2015, 36(9): 1623-1630. doi: 10.1016/S1872-2067(15)60869-5 shu

An investigation of the effects of CeO₂ crystal planes on the aerobic oxidative synthesis of imines from alcohols and amines

Zhixin Zhang ^a,b ,
Yehong Wang ^b ,
Min Wang ^b ,
Jianmin Lü ^b ,
Lihua Li ^b ,
Zhe Zhang ^b ,
Mingrun Li ^b ,
Jingyang Jiang ^a,, ,
Feng Wang ^b,,

1.
a State Key Laboratory of Fine Chemicals, College of Chemistry, Faculty of Chemical Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, Liaoning, China;

Corresponding author: Jingyang Jiang, Feng Wang,
Received Date: 27 March 2015
Available Online: 19 April 2015
Fund Project: 国家自然科学基金(21403216, 21303189, 21422308) (21403216, 21303189, 21422308)

We herein report the effects of CeO₂ crystal planes on the oxidative coupling of alcohols and amines to form imines. CeO₂ exhibits significant catalytic activity under mild reaction conditions (60℃) during the synthesis of 13 different imines, giving >89% conversions and >90% selectivities. The crystal planes of CeO₂ greatly affect the catalytic performance. Among the crystal planes investigated (the (110), (100) and (111) planes), the (110) plane shows the strongest redox ability and thus the best catalytic activity, generating a 97% yield of the imine at 60℃ in 2 h, because it contains the highest concentration of oxygen vacancies.
- Ceria,
- Crystal plane effect,
- Oxidative coupling,
- Imine,
- Defect site
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An investigation of the effects of CeO₂ crystal planes on the aerobic oxidative synthesis of imines from alcohols and amines